pandora-kernel.git
11 years agoMIPS: ralink: adds support for RT3883 SoC family
John Crispin [Sun, 27 Jan 2013 08:39:02 +0000 (09:39 +0100)]
MIPS: ralink: adds support for RT3883 SoC family

Add support code for rt3883 SOC.

The code detects the SoC and registers the clk / pinmux settings.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5185/

11 years agoMIPS: ralink: adds support for RT2880 SoC family
John Crispin [Sun, 27 Jan 2013 08:17:20 +0000 (09:17 +0100)]
MIPS: ralink: adds support for RT2880 SoC family

Add support code for rt2880 SOC.

The code detects the SoC and registers the clk / pinmux settings.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5176/

11 years agoMIPS: ralink: add uart mask to struct ralink_pinmux
John Crispin [Fri, 12 Apr 2013 10:45:27 +0000 (12:45 +0200)]
MIPS: ralink: add uart mask to struct ralink_pinmux

Add a field for the uart muxing mask and set it inside the rt305x setup code.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5744/

11 years agoMIPS: ralink: add pci group to struct ralink_pinmux
Gabor Juhos [Fri, 12 Apr 2013 10:40:23 +0000 (12:40 +0200)]
MIPS: ralink: add pci group to struct ralink_pinmux

This will be used for RT3662/RT3883.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5173/

11 years agoMIPS: ralink: make the RT305x pinmuxing structure static
John Crispin [Fri, 12 Apr 2013 20:16:12 +0000 (22:16 +0200)]
MIPS: ralink: make the RT305x pinmuxing structure static

These structures are exported via struct ralink_pinmux rt_gpio_pinmux and can
hence be static.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5172/

11 years agoMIPS: ralink: rename gpio_pinmux to rt_gpio_pinmux
John Crispin [Fri, 12 Apr 2013 20:12:09 +0000 (22:12 +0200)]
MIPS: ralink: rename gpio_pinmux to rt_gpio_pinmux

Add proper namespacing to the variable.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5171/

11 years agoMIPS: ralink: make early_printk work on RT2880
John Crispin [Tue, 9 Apr 2013 16:31:15 +0000 (18:31 +0200)]
MIPS: ralink: make early_printk work on RT2880

RT2880 has a different location for the early serial port.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5170/

11 years agoMIPS: ralink: add RT5350 sdram register defines
John Crispin [Mon, 25 Mar 2013 10:19:58 +0000 (11:19 +0100)]
MIPS: ralink: add RT5350 sdram register defines

Add a few missing defines that are needed to make memory detection work on the
RT5350.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5169/

11 years agoMIPS: ralink: add missing comment in irq driver
John Crispin [Sat, 16 Mar 2013 15:28:54 +0000 (16:28 +0100)]
MIPS: ralink: add missing comment in irq driver

Trivial patch that adds a comment that makes the code more readable.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5168/

11 years agoMIPS: ralink: fix RT305x clock setup
John Crispin [Fri, 22 Mar 2013 18:25:59 +0000 (19:25 +0100)]
MIPS: ralink: fix RT305x clock setup

Add a few missing clocks.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5167/

11 years agoMIPS: ralink: add RT3352 register defines
John Crispin [Thu, 21 Mar 2013 18:01:49 +0000 (19:01 +0100)]
MIPS: ralink: add RT3352 register defines

Add a few missing defines that are needed to make USB and clock detection work
on the RT3352.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5166/

11 years agoMIPS: ralink: add PCI IRQ handling
Gabor Juhos [Wed, 10 Apr 2013 07:07:27 +0000 (09:07 +0200)]
MIPS: ralink: add PCI IRQ handling

The Ralink IRQ code was not handling the PCI IRQ yet. Add this functionaility
to make PCI work on rt3883.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5165/

11 years agoMIPS: move mips_{set,get}_machine_name() to a more generic place
John Crispin [Thu, 11 Apr 2013 05:34:59 +0000 (05:34 +0000)]
MIPS: move mips_{set,get}_machine_name() to a more generic place

Previously this functionality was only available to users of the mips_machine
api. Moving the code to prom.c allows us to also add a OF wrapper.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5164/

11 years agoMIPS: octeon: Fix GPIO number in IRQ chip private data
Alexander Sverdlin [Thu, 11 Apr 2013 15:29:39 +0000 (17:29 +0200)]
MIPS: octeon: Fix GPIO number in IRQ chip private data

Current GPIO chip implementation in octeon-irq is still broken, even after upstream
commit 87161ccdc61862c8b49e75c21209d7f79dc758e9 (MIPS: Octeon: Fix broken interrupt
controller code). It works for GPIO IRQs that have reset-default configuration, but
not for edge-triggered ones.

The problem is in octeon_irq_gpio_map_common(), which passes modified "hw" variable
(which has range of possible values 16..31) as "gpio_line" parameter to
octeon_irq_set_ciu_mapping(), which saves it in private data of the IRQ chip. Later,
neither octeon_irq_gpio_setup() is able to re-configure GPIOs (cvmx_write_csr() is
writing to non-existent CVMX_GPIO_BIT_CFGX), nor octeon_irq_ciu_gpio_ack() is able
to acknowledge such IRQ, because "mask" is incorrect.

Fix is trivial and has been tested on Cavium Octeon II -based board, including
both level-triggered and edge-triggered GPIO IRQs.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin.ext@nsn.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4980/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: pci: convert to devm_ioremap_resource()
Silviu-Mihai Popescu [Tue, 12 Mar 2013 10:30:05 +0000 (10:30 +0000)]
MIPS: pci: convert to devm_ioremap_resource()

Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.

Signed-off-by: Silviu-Mihai Popescu <silviupopescu1990@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/4986/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Remove unneeded volatile from arch/mips/lib/bitops.c
David Daney [Tue, 26 Feb 2013 22:22:33 +0000 (22:22 +0000)]
MIPS: Remove unneeded volatile from arch/mips/lib/bitops.c

The operations on the bitmap pointers are protected by "memory"
clobbering raw_local_irq_{save,restore}(), so there is no need for
volatile here.  By removing the volatile we get better code generation
out of the compiler.

Signed-off-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4966/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Init new mmu_context for each possible CPU to avoid memory corruption
Huacai Chen [Sun, 17 Mar 2013 11:50:14 +0000 (11:50 +0000)]
MIPS: Init new mmu_context for each possible CPU to avoid memory corruption

Currently, init_new_context() only for each online CPU, this may cause
memory corruption when CPU hotplug and fork() happens at the same time.
To avoid this, we make init_new_context() cover each possible CPU.

Scenario:
1, CPU#1 is being offline;
2, On CPU#0, do_fork() call dup_mm() and copy a mm_struct to the child;
3, On CPU#0, dup_mm() call init_new_context(), since CPU#1 is offline
   and init_new_context() only covers the online CPUs, child has the
   same asid as its parent on CPU#1 (however, child's asid should be 0);
4, CPU#1 is being online;
5, Now, if both parent and child run on CPU#1, memory corruption (e.g.
   segfault, bus error, etc.) will occur.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4995/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Build uasm-generated code only once to avoid CPU Hotplug problem
Huacai Chen [Sun, 17 Mar 2013 11:49:38 +0000 (11:49 +0000)]
MIPS: Build uasm-generated code only once to avoid CPU Hotplug problem

This and the next patch resolve memory corruption problems while CPU
hotplug. Without these patches, memory corruption can triggered easily
as below:

On a quad-core MIPS platform, use "spawn" of UnixBench-5.1.3 (http://
code.google.com/p/byte-unixbench/) and a CPU hotplug script like this
(hotplug.sh):
while true; do
echo 0 >/sys/devices/system/cpu/cpu1/online
echo 0 >/sys/devices/system/cpu/cpu2/online
echo 0 >/sys/devices/system/cpu/cpu3/online
sleep 1
echo 1 >/sys/devices/system/cpu/cpu1/online
echo 1 >/sys/devices/system/cpu/cpu2/online
echo 1 >/sys/devices/system/cpu/cpu3/online
sleep 1
done

Run "hotplug.sh" and then run "spawn 10000", spawn will get segfault
after a few minutes.

This patch:
Currently, clear_page()/copy_page() are generated by Micro-assembler
dynamically. But they are unavailable until uasm_resolve_relocs() has
finished because jump labels are illegal before that. Since these
functions are shared by every CPU, we only call build_clear_page()/
build_copy_page() only once at boot time. Without this patch, programs
will get random memory corruption (segmentation fault, bus error, etc.)
while CPU Hotplug (e.g. one CPU is using clear_page() while another is
generating it in cpu_cache_init()).

For similar reasons we modify build_tlb_refill_handler()'s invocation.

V2:
1, Rework the code to make CPU#0 can be online/offline.
2, Introduce cpu_has_local_ebase feature since some types of MIPS CPU
   need a per-CPU tlb_refill_handler().

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Hongbing Hu <huhb@lemote.com>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4994/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Kconfig: remove "config MIPS_DISABLE_OBSOLETE_IDE"
Paul Bolle [Mon, 8 Apr 2013 17:51:13 +0000 (17:51 +0000)]
MIPS: Kconfig: remove "config MIPS_DISABLE_OBSOLETE_IDE"

The Kconfig symbol MIPS_DISABLE_OBSOLETE_IDE was added in v2.6.10. It
has never been used. Let's remove it.

The symbol was originally introduced by the following commit

commit 2bfa662b64a7ee593f3039c1d3fd81a7766a63cd
Author: Pete Popov <ppopov@embeddedalley.com>
Date:   Tue Oct 12 06:24:19 2004 +0000
    - Db1550 bug fixes
    - updated defconfig
    - updated Kconfig to use DMA_COHERENT since new silicon is coherent

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Patchwork: http://patchwork.linux-mips.org/patch/5064/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Kconfig: remove "config MIPS_BOARDS_GEN"
Paul Bolle [Mon, 8 Apr 2013 17:06:31 +0000 (17:06 +0000)]
MIPS: Kconfig: remove "config MIPS_BOARDS_GEN"

The Kconfig symbol MIPS_BOARDS_GEN is unused since v2.6.27. It should
now be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Patchwork: http://patchwork.linux-mips.org/patch/5063/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: remove obsolete Kconfig macros
Paul Bolle [Mon, 25 Mar 2013 20:27:19 +0000 (20:27 +0000)]
MIPS: remove obsolete Kconfig macros

The support for PB1100, PB1500, and PB1550 got merged into the code for
DB1000 and DB1550 code in v3.7. When that was done the three related
Kconfig symbols were dropped. But not all related Kconfig macros were
removed. Do so now.

Note that the PB1100 code in the Au1100 LCD driver is removed entirely
and not converted to use its current Kconfig macro. That is done because
the macros it uses (PB1100_G_CONTROL, PB1100_G_CONTROL_BL, and
PB1100_G_CONTROL_VDD) are never defined. Actually only one of these was
ever defined (PB1100_G_CONTROL) but that define was removed in v2.6.34.
So, as far as I can tell, this code could have never compiled.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Patchwork: http://patchwork.linux-mips.org/patch/5040/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Fix oprofile compile on XLR uniprocessor
Jayachandran C [Mon, 25 Mar 2013 06:51:52 +0000 (06:51 +0000)]
MIPS: Netlogic: Fix oprofile compile on XLR uniprocessor

The commit c783390a0ecef08df5c804f8c5f647431a04f502 [MIPS: oprofile:
Support for XLR/XLS processors] causes a compilation failure when
oprofile is enabled and SMP is not configured.

arch/mips/oprofile/op_model_mipsxx.c: In function 'mipsxx_cpu_setup':
arch/mips/oprofile/op_model_mipsxx.c:181:2: error: implicit declaration of function 'cpu_logical_map'

To fix this, update oprofile_skip_cpu to not call cpu_logical_map when
CONFIG_SMP is not defined.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5037/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Merge platform usb.h to usb-init.c
Jayachandran C [Sat, 23 Mar 2013 17:28:00 +0000 (17:28 +0000)]
MIPS: Netlogic: Merge platform usb.h to usb-init.c

The definitions are not used anywhere else, and merging it will
make adding the new USB definitions for XLPII series easier.
While there, cleanup some whitespace in usb-init.c. There is no
change to logic due to this commit.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5027/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Support for multiple built-in device trees
Jayachandran C [Sat, 23 Mar 2013 17:27:59 +0000 (17:27 +0000)]
MIPS: Netlogic: Support for multiple built-in device trees

This enables us to have a default device tree per SoC family to be built
into the kernel. The default device tree for XLP3xx has been added as part
of this change. Later this can be used to provide support default boards
for XLP2xx and XLP9xx SoCs.

Kconfig options are provided for each default device tree so that just the
needed ones can be selected to be built into the kernel.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5023/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Remove unused code
Jayachandran C [Sat, 23 Mar 2013 17:27:58 +0000 (17:27 +0000)]
MIPS: Netlogic: Remove unused code

Remove unused functions and redundant comments from
arch/mips/include/asm/netlogic/haldefs.h

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5029/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Add 32-bit support for XLP
Jayachandran C [Sat, 23 Mar 2013 17:27:57 +0000 (17:27 +0000)]
MIPS: Netlogic: Add 32-bit support for XLP

Update asm/netlogic/haldefs.h to extend register access functions
nlm_{read,write}_reg64() for 32-bit compilation. When compiled for 32-bit
the functions will read 64 IO registers with interrupts disabled.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5026/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Avoid using fixed PIC IRT index
Jayachandran C [Sat, 23 Mar 2013 17:27:56 +0000 (17:27 +0000)]
MIPS: Netlogic: Avoid using fixed PIC IRT index

The index for a device interrupt in the PIC interrupt routing table
changes for different chips in the XLP family.  Avoid using the fixed
entries and derive the index value from the SoC device header.

Add workarounds for some devices which do not report the IRT index
correctly.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5025/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: print cpumask with cpumask_scnprintf
Jayachandran C [Sat, 23 Mar 2013 17:27:55 +0000 (17:27 +0000)]
MIPS: Netlogic: print cpumask with cpumask_scnprintf

Use standard function to print cpumask. Also fixup the name of the
variable used and make it static.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5024/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Remove unused EIMR/EIRR functions
Jayachandran C [Sat, 23 Mar 2013 17:27:54 +0000 (17:27 +0000)]
MIPS: Netlogic: Remove unused EIMR/EIRR functions

Remove the definitions of {read,write}_c0_{eirr,eimr}. These functions
are now unused after the PIC and IRQ code has been updated to use
optimized EIMR/EIRR functions which work on both 32-bit and 64-bit.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5021/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: Netlogic: Optimize and fix write_c0_eimr()
Jayachandran C [Sat, 23 Mar 2013 17:27:53 +0000 (17:27 +0000)]
MIPS: Netlogic: Optimize and fix write_c0_eimr()

Remove the irq save/restore from write_c0_eimr(), as it is always called
with interrupts off.

This allows us to remove workaround in write_c0_eimr() to fix up the
flags used by local_irq_save. This fixup worked on XLR, but will break
when 32-bit support is added to r2 cpus like XLP.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5022/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: merge bcm63xx_clk.h into bcm63xx/clk.c
Jonas Gorski [Sat, 6 Apr 2013 10:31:02 +0000 (10:31 +0000)]
MIPS: BCM63XX: merge bcm63xx_clk.h into bcm63xx/clk.c

All the header file does is provide the internal structure of clk,
which shouldn't be used by anyone except clk.c itself anyway.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Patchwork: http://patchwork.linux-mips.org/patch/5055/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: add flash detection for BCM6362
Jonas Gorski [Thu, 21 Mar 2013 14:03:20 +0000 (14:03 +0000)]
MIPS: BCM63XX: add flash detection for BCM6362

BCM6362 support booting from SPI flash and NAND.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5012/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: enable pcie for BCM6362
Jonas Gorski [Thu, 21 Mar 2013 14:03:19 +0000 (14:03 +0000)]
MIPS: BCM63XX: enable pcie for BCM6362

The PCIe controller is almost the same as the BCM6328 one, with only
the SERDES register being at a different location.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5011/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: enable SPI controller for BCM6362
Jonas Gorski [Thu, 21 Mar 2013 14:03:18 +0000 (14:03 +0000)]
MIPS: BCM63XX: enable SPI controller for BCM6362

The SPI controller shares the same register layout as the 6358 one.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5010/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: add basic BCM6362 support
Jonas Gorski [Thu, 21 Mar 2013 14:03:17 +0000 (14:03 +0000)]
MIPS: BCM63XX: add basic BCM6362 support

Add basic support for detecting and booting the BCM6362.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5009/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: rework chip detection
Jonas Gorski [Thu, 21 Mar 2013 14:03:16 +0000 (14:03 +0000)]
MIPS: BCM63XX: rework chip detection

Instead of trying to use a correlation of cpu prid and chip id and
hoping they will always be unique, use the cpu prid to determine the
chip id register location and just read out the chip id.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5008/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: fix revision ID width
Jonas Gorski [Thu, 21 Mar 2013 14:03:15 +0000 (14:03 +0000)]
MIPS: BCM63XX: fix revision ID width

The REVID is only 8 bit wide.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5007/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoMIPS: BCM63XX: remove duplicate spi register definitions
Jonas Gorski [Thu, 21 Mar 2013 14:03:14 +0000 (14:03 +0000)]
MIPS: BCM63XX: remove duplicate spi register definitions

BCM6338 and BCM6348, and BCM6358 and everything after that share the
same register layout. To not have to redefine them for each new chip
and keep the code size small, only use the definitions for the first
chip with the certain layout.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5006/
Acked-by: John Crispin <blogic@openwrt.org>
11 years agoLinux 3.9-rc7 v3.9-rc7
Linus Torvalds [Mon, 15 Apr 2013 00:45:16 +0000 (17:45 -0700)]
Linux 3.9-rc7

11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:13:24 +0000 (11:13 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
  x86/mm/cpa/selftest: Fix false positive in CPA self test
  x86/mm/cpa: Convert noop to functional fix
  x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
  x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates

11 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:12:17 +0000 (11:12 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixlets"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/cputime: Fix accounting on multi-threaded processes
  sched/debug: Fix sd->*_idx limit range avoiding overflow
  sched_clock: Prevent 64bit inatomicity on 32bit systems
  sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s

11 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:10:44 +0000 (11:10 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixlets"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix error return code
  ftrace: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, always make sure it's NUL terminated
  perf: Fix ring_buffer perf_output_space() boundary calculation
  perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer()

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sun, 14 Apr 2013 17:55:20 +0000 (10:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "One fix for a hotplug locking regressions, and one fix for an oops if
  you unplug the monitor at an inopportune moment on the udl device."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
  udl: handle EDID failure properly.

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Linus Torvalds [Sun, 14 Apr 2013 17:54:40 +0000 (10:54 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu

Pull m68knommu fix from Greg Ungerer:
 "This contains only a single compilation fix for ColdFire m68k targets
  that use local non-GPIOLIB support."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: define a local gpio_request_one() function

11 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sun, 14 Apr 2013 17:53:54 +0000 (10:53 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fix from Wim Van Sebroeck:
 "It will fix compile errors for the at91rm9200_wdt driver"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: Revert the AT91RM9200_WATCHDOG dependency

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 14 Apr 2013 17:52:54 +0000 (10:52 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull one more btrfs fix from Chris Mason:
 "This has a recent fix from Josef for our tree log replay code.  It
  fixes problems where the inode counter for the number of bytes in the
  file wasn't getting updated properly during fsync replay.

  The commit did get rebased this morning, but it was only to clean up
  the subject line.  The code hasn't changed."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: make sure nbytes are right after log replay

11 years agoMerge tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 14 Apr 2013 17:50:55 +0000 (10:50 -0700)]
Merge tag 'trace-fixes-v3.9-rc-v3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull ftrace fixes from Steven Rostedt:
 "Namhyung Kim found and fixed a bug that can crash the kernel by simply
  doing: echo 1234 | tee -a /sys/kernel/debug/tracing/set_ftrace_pid

  Luckily, this can only be done by root, but still is a nasty bug."

* tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
  tracing: Fix possible NULL pointer dereferences

11 years agoAdd file_ns_capable() helper function for open-time capability checking
Linus Torvalds [Sun, 14 Apr 2013 17:06:31 +0000 (10:06 -0700)]
Add file_ns_capable() helper function for open-time capability checking

Nothing is using it yet, but this will allow us to delay the open-time
checks to use time, without breaking the normal UNIX permission
semantics where permissions are determined by the opener (and the file
descriptor can then be passed to a different process, or the process can
drop capabilities).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agowatchdog: Revert the AT91RM9200_WATCHDOG dependency
Nicolas Ferre [Wed, 10 Apr 2013 12:36:22 +0000 (14:36 +0200)]
watchdog: Revert the AT91RM9200_WATCHDOG dependency

Compiling the at91rm9200_wdt.c driver without at91rm9200
support was leading to several errors:

drivers/built-in.o: In function `at91_wdt_close':
at91_adc.c:(.text+0xc9fe4): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_write':
at91_adc.c:(.text+0xca004): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_shutdown':
at91_adc.c:(.text+0xca01c): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_suspend':
at91_adc.c:(.text+0xca038): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_open':
at91_adc.c:(.text+0xca0cc): undefined reference to `at91_st_base'
drivers/built-in.o:at91_adc.c:(.text+0xca2c8): more undefined references to
`at91_st_base' follow

So, reverting the modification of the "depends" Kconfig line
introduced by patch a6a1bcd37 (watchdog: at91rm9200: add DT support)
seems to be the good solution.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
11 years agovfs: Revert spurious fix to spinning prevention in prune_icache_sb
Suleiman Souhlal [Sat, 13 Apr 2013 23:03:06 +0000 (16:03 -0700)]
vfs: Revert spurious fix to spinning prevention in prune_icache_sb

Revert commit 62a3ddef6181 ("vfs: fix spinning prevention in prune_icache_sb").

This commit doesn't look right: since we are looking at the tail of the
list (sb->s_inode_lru.prev) if we want to skip an inode, we should put
it back at the head of the list instead of the tail, otherwise we will
keep spinning on it.

Discovered when investigating why prune_icache_sb came top in perf
reports of a swapping load.

Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agokobject: fix kset_find_obj() race with concurrent last kobject_put()
Linus Torvalds [Sat, 13 Apr 2013 22:15:30 +0000 (15:15 -0700)]
kobject: fix kset_find_obj() race with concurrent last kobject_put()

Anatol Pomozov identified a race condition that hits module unloading
and re-loading.  To quote Anatol:

 "This is a race codition that exists between kset_find_obj() and
  kobject_put().  kset_find_obj() might return kobject that has refcount
  equal to 0 if this kobject is freeing by kobject_put() in other
  thread.

  Here is timeline for the crash in case if kset_find_obj() searches for
  an object tht nobody holds and other thread is doing kobject_put() on
  the same kobject:

    THREAD A (calls kset_find_obj())     THREAD B (calls kobject_put())
    splin_lock()
                                         atomic_dec_return(kobj->kref), counter gets zero here
                                         ... starts kobject cleanup ....
                                         spin_lock() // WAIT thread A in kobj_kset_leave()
    iterate over kset->list
    atomic_inc(kobj->kref) (counter becomes 1)
    spin_unlock()
                                         spin_lock() // taken
                                         // it does not know that thread A increased counter so it
                                         remove obj from list
                                         spin_unlock()
                                         vfree(module) // frees module object with containing kobj

    // kobj points to freed memory area!!
    kobject_put(kobj) // OOPS!!!!

  The race above happens because module.c tries to use kset_find_obj()
  when somebody unloads module.  The module.c code was introduced in
  commit 6494a93d55fa"

Anatol supplied a patch specific for module.c that worked around the
problem by simply not using kset_find_obj() at all, but rather than make
a local band-aid, this just fixes kset_find_obj() to be thread-safe
using the proper model of refusing the get a new reference if the
refcount has already dropped to zero.

See examples of this proper refcount handling not only in the kref
documentation, but in various other equivalent uses of this pattern by
grepping for atomic_inc_not_zero().

[ Side note: the module race does indicate that module loading and
  unloading is not properly serialized wrt sysfs information using the
  module mutex.  That may require further thought, but this is the
  correct fix at the kobject layer regardless. ]

Reported-analyzed-and-tested-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoBtrfs: make sure nbytes are right after log replay
Josef Bacik [Fri, 5 Apr 2013 20:50:09 +0000 (20:50 +0000)]
Btrfs: make sure nbytes are right after log replay

While trying to track down a tree log replay bug I noticed that fsck was always
complaining about nbytes not being right for our fsynced file.  That is because
the new fsync stuff doesn't wait for ordered extents to complete, so the inodes
nbytes are not necessarily updated properly when we log it.  So to fix this we
need to set nbytes to whatever it is on the inode that is on disk, so when we
replay the extents we can just add the bytes that are being added as we replay
the extent.  This makes it work for the case that we have the wrong nbytes or
the case that we logged everything and nbytes is actually correct.  With this
I'm no longer getting nbytes errors out of btrfsck.

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
11 years agox86-32: Fix possible incomplete TLB invalidate with PAE pagetables
Dave Hansen [Fri, 12 Apr 2013 23:23:54 +0000 (16:23 -0700)]
x86-32: Fix possible incomplete TLB invalidate with PAE pagetables

This patch attempts to fix:

https://bugzilla.kernel.org/show_bug.cgi?id=56461

The symptom is a crash and messages like this:

chrome: Corrupted page table at address 34a03000
*pdpt = 0000000000000000 *pde = 0000000000000000
Bad pagetable: 000f [#1] PREEMPT SMP

Ingo guesses this got introduced by commit 611ae8e3f520 ("x86/tlb:
enable tlb flush range support for x86") since that code started to free
unused pagetables.

On x86-32 PAE kernels, that new code has the potential to free an entire
PMD page and will clear one of the four page-directory-pointer-table
(aka pgd_t entries).

The hardware aggressively "caches" these top-level entries and invlpg
does not actually affect the CPU's copy.  If we clear one we *HAVE* to
do a full TLB flush, otherwise we might continue using a freed pmd page.
(note, we do this properly on the population side in pud_populate()).

This patch tracks whenever we clear one of these entries in the 'struct
mmu_gather', and ensures that we follow up with a full tlb flush.

BTW, I disassembled and checked that:

if (tlb->fullmm == 0)
and
if (!tlb->fullmm && !tlb->need_flush_all)

generate essentially the same code, so there should be zero impact there
to the !PAE case.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Artem S Tashkinov <t.artem@mailcity.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Fri, 12 Apr 2013 22:26:42 +0000 (15:26 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are remaining target-pending items for v3.9-rc7 code.

  The tcm_vhost patches are more than I'd usually include in a -rc7
  pull, but are changes required for v3.9 to work correctly with the
  pending vhost-scsi-pci QEMU upstream series merge.  (Paolo CC'ed)

  Plus Asias's conversion to use vhost_virtqueue->private_data + RCU for
  managing vhost-scsi endpoints has gotten alot of review + testing over
  the past weeks, and MST has ACKed the full series.

  Also, there is a target patch to fix a long-standing bug within
  control CDB handling with Standby/Offline/Transition ALUA port access
  states, that had been incorrectly rejecting the control CDBs required
  for LUN scan to work during these port group states.  CC'ing to
  stable."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
  tcm_vhost: Send bad target to guest when cmd fails
  tcm_vhost: Add vhost_scsi_send_bad_target() helper
  tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq
  tcm_vhost: Remove double check of response
  tcm_vhost: Initialize vq->last_used_idx when set endpoint
  tcm_vhost: Use vq->private_data to indicate if the endpoint is setup
  tcm_vhost: Use ACCESS_ONCE for vs->vs_tpg[target] access

11 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 12 Apr 2013 22:18:56 +0000 (15:18 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of ten bug fixes (and two consisting of copyright year
  update and version number change) pretty much all of which involve
  either a crash or a hang except the removal of the random sleep from
  the qla2xxx driver (which is a coding error so bad, we want it gone
  before anyone has a chance to copy it)."

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
  [SCSI] libsas: fix handling vacant phy in sas_set_ex_phy()
  [SCSI] ibmvscsi: Fix slave_configure deadlock
  [SCSI] qla2xxx: Update the driver version to 8.04.00.13-k.
  [SCSI] qla2xxx: Remove debug code that msleeps for random duration.
  [SCSI] qla2xxx: Update copyright dates information in LICENSE.qla2xxx file.
  [SCSI] qla2xxx: Fix crash during firmware dump procedure.
  [SCSI] Revert "qla2xxx: Add setting of driver version string for vendor application."
  [SCSI] ipr: dlpar failed when adding an adapter back
  [SCSI] ipr: fix addition of abort command to HRRQ free queue
  [SCSI] st: Take additional queue ref in st_probe
  [SCSI] libsas: use right function to alloc smp response
  [SCSI] ipr: ipr_test_msi() fails when running with msi-x enabled adapter

11 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 12 Apr 2013 22:18:20 +0000 (15:18 -0700)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fix from Steve French:
 "Fixes a regression in cifs in which a password which begins with a
  comma is parsed incorrectly as a blank password"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Allow passwords which begin with a delimitor

11 years agoftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
Steven Rostedt (Red Hat) [Fri, 12 Apr 2013 20:40:13 +0000 (16:40 -0400)]
ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section

As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to
be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the
ftrace_pid_fops is defined when DYNAMIC_FTRACE is not.

Cc: stable@vger.kernel.org
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
11 years agotracing: Fix possible NULL pointer dereferences
Namhyung Kim [Thu, 11 Apr 2013 06:55:01 +0000 (15:55 +0900)]
tracing: Fix possible NULL pointer dereferences

Currently set_ftrace_pid and set_graph_function files use seq_lseek
for their fops.  However seq_open() is called only for FMODE_READ in
the fops->open() so that if an user tries to seek one of those file
when she open it for writing, it sees NULL seq_file and then panic.

It can be easily reproduced with following command:

  $ cd /sys/kernel/debug/tracing
  $ echo 1234 | sudo tee -a set_ftrace_pid

In this example, GNU coreutils' tee opens the file with fopen(, "a")
and then the fopen() internally calls lseek().

Link: http://lkml.kernel.org/r/1365663302-2170-1-git-send-email-namhyung@kernel.org
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
11 years agoMerge tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 12 Apr 2013 14:45:17 +0000 (07:45 -0700)]
Merge tag 'sound-3.9' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This contains a few small ASoC fixes (wm8903, wm5102, samsung-i2s,
  tegra, and soc-compress) and an endian fix for NI USB-audio devices,
  update for Mark's e-mail address.

  No scary changes, AFAIS."

* tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  MAINTAINERS: Update e-mail address
  ASoC: wm5102: Correct lookup of arizona struct in SYSCLK event
  ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running
  ALSA: usb-audio: fix endianness bug in snd_nativeinstruments_*
  ASoC: tegra: Don't claim to support PCM pause and resume
  ASoC: Samsung: set drvdata before adding secondary device
  ASoC: Samsung: return error if drvdata is not set
  ASoC: compress: Cancel delayed power down if needed
  ASoC: core: Fix to check return value of snd_soc_update_bits_locked()

11 years agoMerge tag 'asoc-maintainers-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Takashi Iwai [Fri, 12 Apr 2013 11:53:35 +0000 (13:53 +0200)]
Merge tag 'asoc-maintainers-v3.9-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus

MAINTAINERS: Update e-mail address

Update the e-mail address I use for subsystems.

11 years agoMAINTAINERS: Update e-mail address
Mark Brown [Fri, 12 Apr 2013 10:39:57 +0000 (11:39 +0100)]
MAINTAINERS: Update e-mail address

Update the e-mail address I use for subsystems.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoMerge tag 'asoc-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Takashi Iwai [Fri, 12 Apr 2013 08:27:39 +0000 (10:27 +0200)]
Merge tag 'asoc-v3.9-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v3.9

A few updates, more than I'd like, fixing some relatively small issues
but mostly driver specific ones.  Nothing wildly exciting so if it
doesn't make v3.9 it won't be the end of the world but it'd be nice.

11 years agox86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
Boris Ostrovsky [Thu, 11 Apr 2013 17:59:52 +0000 (13:59 -0400)]
x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set

When CONFIG_DEBUG_PAGEALLOC is set page table updates made by
kernel_map_pages() are not made visible (via TLB flush)
immediately if lazy MMU is on. In environments that support lazy
MMU (e.g. Xen) this may lead to fatal page faults, for example,
when zap_pte_range() needs to allocate pages in
__tlb_remove_page() -> tlb_next_batch().

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: konrad.wilk@oracle.com
Link: http://lkml.kernel.org/r/1365703192-2089-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agox86/mm/cpa/selftest: Fix false positive in CPA self test
Andrea Arcangeli [Thu, 11 Apr 2013 13:36:09 +0000 (15:36 +0200)]
x86/mm/cpa/selftest: Fix false positive in CPA self test

If the pmd is not present, _PAGE_PSE will not be set anymore.
Fix the false positive.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Stefan Bader <stefan.bader@canonical.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1365687369-30802-1-git-send-email-aarcange@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoperf: Fix error return code
Wei Yongjun [Fri, 12 Apr 2013 03:05:54 +0000 (11:05 +0800)]
perf: Fix error return code

Fix to return -ENOMEM in the allocation error case instead of 0
(if pmu_bus_running == 1), as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: acme@ghostprotocols.net
Link: http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08c2w1tngQ@mail.gmail.com
[ Tweaked the error code setting placement and the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agodrm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
Daniel Vetter [Thu, 11 Apr 2013 14:26:55 +0000 (14:26 +0000)]
drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event

Driver's and ->fill_modes functions are allowed to grab crtc mutexes
(for e.g. load detect). Hence we need to first only grab the general
kms mutex, and only in a second step grab all locks to do the
modesets.

This prevents a deadlock on my gm45 in the tv load detect code called
by drm_helper_probe_single_connector_modes.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agoudl: handle EDID failure properly.
Dave Airlie [Fri, 12 Apr 2013 03:25:20 +0000 (13:25 +1000)]
udl: handle EDID failure properly.

Don't oops seems proper.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 12 Apr 2013 03:35:11 +0000 (20:35 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "The first one fixes issue in pl330 to check for DT compatible and
  the second one fixes omap-dma to start without delay"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: omap-dma: Start DMA without delay for cyclic channels
  DMA: PL330: Add check if device tree compatible

11 years agoMerge tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 12 Apr 2013 03:33:38 +0000 (20:33 -0700)]
Merge tag 'pm-3.9-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:

 - System reboot/halt fix related to CPU offline ordering from Huacai
   Chen.

 - intel_pstate driver fix for a delay time computation error
   occasionally crashing systems using it from Dirk Brandewie.

* tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / reboot: call syscore_shutdown() after disable_nonboot_cpus()
  cpufreq / intel_pstate: Set timer timeout correctly

11 years agoMerge tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Fri, 12 Apr 2013 01:22:20 +0000 (18:22 -0700)]
Merge tag 'regmap-v3.9-rc6' of git://git./linux/kernel/git/broonie/regmap

Pull regmap revert from Mark Brown:
 "regmap: Back out work buffer fix

  This reverts commit bc8ce4 (regmap: don't corrupt work buffer in
  _regmap_raw_write()) since it turns out that it can cause issues when
  taken in isolation from the other changes in -next that lead to its
  discovery.  On the basis that nobody noticed the problems for quite
  some time without that subsequent work let's drop it from v3.9."

* tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Back out work buffer fix

11 years agoMerge tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 12 Apr 2013 01:21:45 +0000 (18:21 -0700)]
Merge tag 'gpio-fixes-v3.9-rc6' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fix from Linus Walleij:
 "Oneliner fix for the PCA 953x driver."

* tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: pca953x: fix irq_domain_add_simple usage

11 years agoMerge tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 12 Apr 2013 01:20:31 +0000 (18:20 -0700)]
Merge tag 'arm-soc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC bug fixes from Arnd Bergmann:
 "A little later during the week than the last few pull requests, since
  there was very little that came in before 3.9-rc6.  At least things
  have calmed down again here.

  Some important bug fixes that came in over the last 10 days, mostly
  mvebu and imx:

   - Multiple regressions on i.mx following the conversion of the clock
     code, hopefully the last we are seeing of those.
   - a regression in the mvebu irq handling code
   - An incorrect register offset in the rewritten s3c24xx irq code.
   - Two bugs in setting up the iomega_ix2_200 machine
   - Turning on an extra bus clock on imx
   - A MAINTAINERS file entry for Roland Stigge"

* tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: S3C24XX: Fix interrupt pending register offset of the EINT controller
  ARM: S3C24XX: Correct NR_IRQS definition for s3c2440
  ARM i.MX6: Fix ldb_di clock selection
  ARM: imx: provide twd clock lookup from device tree
  ARM: imx35 Bugfix admux clock
  ARM: clk-imx35: Bugfix iomux clock
  ARM: mxs: Slow down the I2C clock speed
  MAINTAINERS: Add maintainer for LPC32xx
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

11 years ago[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
Wei Yongjun [Sun, 2 Dec 2012 13:33:24 +0000 (08:33 -0500)]
[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()

The dereference to 'put_index' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years agogpio: pca953x: fix irq_domain_add_simple usage
Alexandre Belloni [Wed, 3 Apr 2013 17:40:14 +0000 (19:40 +0200)]
gpio: pca953x: fix irq_domain_add_simple usage

We actually have to pass chip as the host_data parameter of
irq_domain_add_simple() as later on, it is used to initialize chip_data
in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer
dereference after calling irq_data_get_irq_chip_data() in
pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(),
pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type().

Fixes regression introduced by commit
0e8f2fdacf1d44651aa7e57063c76142d1f4988b (gpio: pca953x: use simple
irqdomain)

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoMerge remote-tracking branch 'asoc/fix/wm8903' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:31 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/wm8903' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/tegra' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:30 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/tegra' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/samsung' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:29 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/samsung' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/core' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:28 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/core' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/compress' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:27 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/compress' into tmp

11 years agoMerge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper...
Arnd Bergmann [Thu, 11 Apr 2013 14:55:29 +0000 (16:55 +0200)]
Merge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper <jason@lakedaemon.net>:

mvebu fixes for v3.9 round 3

 - Kirkwood
    - a couple of small fixes for the Iomega ix2-200 board (ether and led)
 - mvebu
    - allow GPIO button to work on Mirabox when running SMP

* tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
11 years agotarget: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
Nicholas Bellinger [Wed, 10 Apr 2013 22:00:27 +0000 (15:00 -0700)]
target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs

This patch fixes a bug where a handful of informational / control CDBs
that should be allowed during ALUA access state Standby/Offline/Transition
where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*.

This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN
registration when LUN scanning occured during these ALUA access states.

Cc: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Send bad target to guest when cmd fails
Asias He [Wed, 10 Apr 2013 07:06:16 +0000 (15:06 +0800)]
tcm_vhost: Send bad target to guest when cmd fails

Send bad target to guest in case:
1) we can not allocate the cmd
2) fail to submit the cmd

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Add vhost_scsi_send_bad_target() helper
Asias He [Wed, 10 Apr 2013 07:06:15 +0000 (15:06 +0800)]
tcm_vhost: Add vhost_scsi_send_bad_target() helper

Share the send bad target code with other use cases.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq
Asias He [Wed, 10 Apr 2013 07:06:14 +0000 (15:06 +0800)]
tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq

If we fail to submit the allocated tv_vmd to tcm_vhost_submission_work,
we will leak the tv_vmd. Free tv_vmd on fail path.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Remove double check of response
Asias He [Wed, 10 Apr 2013 07:06:13 +0000 (15:06 +0800)]
tcm_vhost: Remove double check of response

We did the length of response check twice.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agox86/mm/cpa: Convert noop to functional fix
Andrea Arcangeli [Wed, 10 Apr 2013 13:28:25 +0000 (15:28 +0200)]
x86/mm/cpa: Convert noop to functional fix

Commit:

  a8aed3e0752b ("x86/mm/pageattr: Prevent PSE and GLOABL leftovers to confuse pmd/pte_present and pmd_huge")

introduced a valid fix but one location that didn't trigger the bug that
lead to finding those (small) problems, wasn't updated using the
right variable.

The wrong variable was also initialized for no good reason, that
may have been the source of the confusion. Remove the noop
initialization accordingly.

Commit a8aed3e0752b also erroneously removed one canon_pgprot pass meant
to clear pmd bitflags not supported in hardware by older CPUs, that
automatically gets corrected by this patch too by applying it to the right
variable in the new location.

Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Mel Gorman <mgorman@suse.de>
Link: http://lkml.kernel.org/r/1365600505-19314-1-git-send-email-aarcange@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoMerge tag 'char-misc-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Wed, 10 Apr 2013 23:00:53 +0000 (16:00 -0700)]
Merge tag 'char-misc-3.9-rc6' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg Kroah-Hartman:
 "Here is a single Kconfig dependancy build fix for 3.9.

  It's been in linux-next for a while, and fixes a problem that has been
  reported multiple times."

* tag 'char-misc-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  misc/vmw_vmci: Add dependency on CONFIG_NET

11 years agoMerge tag 'tty-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Wed, 10 Apr 2013 22:59:12 +0000 (15:59 -0700)]
Merge tag 'tty-3.9-rc6' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg Kroah-Hartman:
 "Here are 4 small tty/serial fixes for 3.9.

  One fixes a bug where we broke the documentation build, and the others
  fix reported problems in some serial drivers.

  All have been in linux-next for a while"

* tag 'tty-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: mxser: fix cycle termination condition in mxser_probe() and mxser_module_init()
  Revert "tty/8250_pnp: serial port detection regression since v3.7"
  OMAP/serial: Revert bad fix of Rx FIFO threshold granularity
  tty: Documentation: fix a path in a DocBook template

11 years agoMerge tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 10 Apr 2013 22:57:33 +0000 (15:57 -0700)]
Merge tag 'stable/for-linus-3.9-rc6-tag' of git://git./linux/kernel/git/konrad/xen

Pull Xen fixes from Konrad Rzeszutek Wilk:
 "Two bug-fixes:
   - Early bootup issue found on DL380 machines
   - Fix for the timer interrupt not being processed right awaym leading
     to quite delayed time skew on certain workloads"

* tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/mmu: On early bootup, flush the TLB when changing RO->RW bits Xen provided pagetables.
  xen/events: Handle VIRQ_TIMER before any other hardirq in event loop.

11 years agoMerge tag 'trace-fixes-3.9-rc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 10 Apr 2013 22:56:57 +0000 (15:56 -0700)]
Merge tag 'trace-fixes-3.9-rc-v2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Namhyung Kim fixed a long standing bug that can cause a kernel panic.

  If the function profiler fails to allocate memory for everything, it
  will do a double free on the same pointer which can cause a panic"

* tag 'trace-fixes-3.9-rc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix double free when function profile init failed

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 10 Apr 2013 21:15:27 +0000 (14:15 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) cfg80211_conn_scan() must be called with the sched_scan_mutex, fix
    from Artem Savkov.

 2) Fix regression in TCP ICMPv6 processing, we do not want to treat
    redirects as socket errors, from Christoph Paasch.

 3) Fix several recvmsg() msg_name kernel memory leaks into userspace,
    in ATM, AX25, Bluetooth, CAIF, IRDA, s390 IUCV, L2TP, LLC, Netrom,
    NFC, Rose, TIPC, and VSOCK.  From Mathias Krause and Wei Yongjun.

 4) Fix AF_IUCV handling of segmented SKBs in recvmsg(), from Ursula
    Braun and Eric Dumazet.

 5) CAN gw.c code does kfree() on SLAB cache memory, use
    kmem_cache_free() instead.  Fix from Wei Yongjun.

 6) Fix LSM regression on TCP SYN/ACKs, some LSMs such as SELINUX want
    an skb->sk socket context available for these packets, but nothing
    else requires it.  From Eric Dumazet and Paul Moore.

 7) Fix ipv4 address lifetime processing so that we don't perform
    sleepable acts inside of rcu_read_lock() sections, do them in an
    rtnl_lock() section instead.  From Jiri Pirko.

 8) mvneta driver accidently sets HW features after device registry, it
    should do so beforehand.  Fix from Willy Tarreau.

 9) Fix bonding unload races more correctly, from Nikolay Aleksandrov
    and Veaceslav Falico.

10) rtnl_dump_ifinfo() and rtnl_calcit() invoke nlmsg_parse() with wrong
    header size argument.  Fix from Michael Riesch.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  lsm: add the missing documentation for the security_skb_owned_by() hook
  bnx2x: Prevent null pointer dereference in AFEX mode
  e100: Add dma mapping error check
  selinux: add a skb_owned_by() hook
  can: gw: use kmem_cache_free() instead of kfree()
  netrom: fix invalid use of sizeof in nr_recvmsg()
  qeth: fix qeth_wait_for_threads() deadlock for OSN devices
  af_iucv: fix recvmsg by replacing skb_pull() function
  rtnetlink: Call nlmsg_parse() with correct header length
  bonding: fix bonding_masters race condition in bond unloading
  Revert "bonding: remove sysfs before removing devices"
  net: mvneta: enable features before registering the driver
  hyperv: Fix RNDIS send_completion code path
  hyperv: Fix a kernel warning from netvsc_linkstatus_callback()
  net: ipv4: fix schedule while atomic bug in check_lifetime()
  net: ipv4: reset check_lifetime_work after changing lifetime
  bnx2x: Fix KR2 rapid link flap
  sctp: remove 'sridhar' from maintainers list
  VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg()
  VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue()
  ...

11 years agoMerge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
Linus Torvalds [Wed, 10 Apr 2013 21:14:27 +0000 (14:14 -0700)]
Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

Pull C6X fix from Mark Salter.

Final (?) fix from the barrier discussion.

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  add memory barrier to arch_local_irq_restore

11 years agocifs: Allow passwords which begin with a delimitor
Sachin Prabhu [Tue, 9 Apr 2013 17:17:41 +0000 (18:17 +0100)]
cifs: Allow passwords which begin with a delimitor

Fixes a regression in cifs_parse_mount_options where a password
which begins with a delimitor is parsed incorrectly as being a blank
password.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
11 years agolsm: add the missing documentation for the security_skb_owned_by() hook
Paul Moore [Wed, 10 Apr 2013 19:34:14 +0000 (15:34 -0400)]
lsm: add the missing documentation for the security_skb_owned_by() hook

Unfortunately we didn't catch the missing comments earlier when the
patch was merged.

Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Prevent null pointer dereference in AFEX mode
Yuval Mintz [Wed, 10 Apr 2013 10:34:39 +0000 (13:34 +0300)]
bnx2x: Prevent null pointer dereference in AFEX mode

The cnic module is responsible for initializing various bnx2x structs
via callbacks provided by the bnx2x module.
One such struct is the queue object for the FCoE queue.

If a device is working in AFEX mode and its configuration allows FCoE yet
the cnic module is not loaded, it's very likely a null pointer dereference
will occur, as the bnx2x will erroneously access the FCoE's queue object.

Prevent said access until cnic properly registers itself.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoe100: Add dma mapping error check
Neil Horman [Tue, 9 Apr 2013 23:19:00 +0000 (23:19 +0000)]
e100: Add dma mapping error check

e100 uses pci_map_single, but fails to check for a dma mapping error after its
use, resulting in a stack trace:

[   46.656594] ------------[ cut here ]------------
[   46.657004] WARNING: at lib/dma-debug.c:933 check_unmap+0x47b/0x950()
[   46.657004] Hardware name: To Be Filled By O.E.M.
[   46.657004] e100 0000:00:0e.0: DMA-API: device driver failed to check map
error[device address=0x000000007a4540fa] [size=90 bytes] [mapped as single]
[   46.657004] Modules linked in:
[   46.657004]  w83627hf hwmon_vid snd_via82xx ppdev snd_ac97_codec ac97_bus
snd_seq snd_pcm snd_mpu401 snd_mpu401_uart ns558 snd_rawmidi gameport parport_pc
e100 snd_seq_device parport snd_page_alloc snd_timer snd soundcore skge shpchp
k8temp mii edac_core i2c_viapro edac_mce_amd nfsd auth_rpcgss nfs_acl lockd
sunrpc binfmt_misc uinput ata_generic pata_acpi radeon i2c_algo_bit
drm_kms_helper ttm firewire_ohci drm firewire_core pata_via sata_via i2c_core
sata_promise crc_itu_t
[   46.657004] Pid: 792, comm: ip Not tainted 3.8.0-0.rc6.git0.1.fc19.x86_64 #1
[   46.657004] Call Trace:
[   46.657004]  <IRQ>  [<ffffffff81065ed0>] warn_slowpath_common+0x70/0xa0
[   46.657004]  [<ffffffff81065f4c>] warn_slowpath_fmt+0x4c/0x50
[   46.657004]  [<ffffffff81364cfb>] check_unmap+0x47b/0x950
[   46.657004]  [<ffffffff8136522f>] debug_dma_unmap_page+0x5f/0x70
[   46.657004]  [<ffffffffa030f0f0>] ? e100_tx_clean+0x30/0x210 [e100]
[   46.657004]  [<ffffffffa030f1a8>] e100_tx_clean+0xe8/0x210 [e100]
[   46.657004]  [<ffffffffa030fc6f>] e100_poll+0x56f/0x6c0 [e100]
[   46.657004]  [<ffffffff8159dce1>] ? net_rx_action+0xa1/0x370
[   46.657004]  [<ffffffff8159ddb2>] net_rx_action+0x172/0x370
[   46.657004]  [<ffffffff810703bf>] __do_softirq+0xef/0x3d0
[   46.657004]  [<ffffffff816e4ebc>] call_softirq+0x1c/0x30
[   46.657004]  [<ffffffff8101c485>] do_softirq+0x85/0xc0
[   46.657004]  [<ffffffff81070885>] irq_exit+0xd5/0xe0
[   46.657004]  [<ffffffff816e5756>] do_IRQ+0x56/0xc0
[   46.657004]  [<ffffffff816dacb2>] common_interrupt+0x72/0x72
[   46.657004]  <EOI>  [<ffffffff816da1eb>] ?
_raw_spin_unlock_irqrestore+0x3b/0x70
[   46.657004]  [<ffffffff816d124d>] __slab_free+0x58/0x38b
[   46.657004]  [<ffffffff81214424>] ? fsnotify_clear_marks_by_inode+0x34/0x120
[   46.657004]  [<ffffffff811b0417>] ? kmem_cache_free+0x97/0x320
[   46.657004]  [<ffffffff8157fc14>] ? sock_destroy_inode+0x34/0x40
[   46.657004]  [<ffffffff8157fc14>] ? sock_destroy_inode+0x34/0x40
[   46.657004]  [<ffffffff811b0692>] kmem_cache_free+0x312/0x320
[   46.657004]  [<ffffffff8157fc14>] sock_destroy_inode+0x34/0x40
[   46.657004]  [<ffffffff811e8c28>] destroy_inode+0x38/0x60
[   46.657004]  [<ffffffff811e8d5e>] evict+0x10e/0x1a0
[   46.657004]  [<ffffffff811e9605>] iput+0xf5/0x180
[   46.657004]  [<ffffffff811e4338>] dput+0x248/0x310
[   46.657004]  [<ffffffff811ce0e1>] __fput+0x171/0x240
[   46.657004]  [<ffffffff811ce26e>] ____fput+0xe/0x10
[   46.657004]  [<ffffffff8108d54c>] task_work_run+0xac/0xe0
[   46.657004]  [<ffffffff8106c6ed>] do_exit+0x26d/0xc30
[   46.657004]  [<ffffffff8109eccc>] ? finish_task_switch+0x7c/0x120
[   46.657004]  [<ffffffff816dad58>] ? retint_swapgs+0x13/0x1b
[   46.657004]  [<ffffffff8106d139>] do_group_exit+0x49/0xc0
[   46.657004]  [<ffffffff8106d1c4>] sys_exit_group+0x14/0x20
[   46.657004]  [<ffffffff816e3b19>] system_call_fastpath+0x16/0x1b
[   46.657004] ---[ end trace 4468c44e2156e7d1 ]---
[   46.657004] Mapped at:
[   46.657004]  [<ffffffff813663d1>] debug_dma_map_page+0x91/0x140
[   46.657004]  [<ffffffffa030e8eb>] e100_xmit_prepare+0x12b/0x1c0 [e100]
[   46.657004]  [<ffffffffa030c924>] e100_exec_cb+0x84/0x140 [e100]
[   46.657004]  [<ffffffffa030e56a>] e100_xmit_frame+0x3a/0x190 [e100]
[   46.657004]  [<ffffffff8159ee89>] dev_hard_start_xmit+0x259/0x6c0

Easy fix, modify the cb paramter to e100_exec_cb to return an error, and do the
dma_mapping_error check in the obvious place

This was reported previously here:
http://article.gmane.org/gmane.linux.network/257893

But nobody stepped up and fixed it.

CC: Josh Boyer <jwboyer@redhat.com>
CC: e1000-devel@lists.sourceforge.net
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Michal Jaegermann <michal@harddata.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agox86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
Boris Ostrovsky [Sat, 23 Mar 2013 13:36:36 +0000 (09:36 -0400)]
x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal

Invoking arch_flush_lazy_mmu_mode() results in calls to
preempt_enable()/disable() which may have performance impact.

Since lazy MMU is not used on bare metal we can patch away
arch_flush_lazy_mmu_mode() so that it is never called in such
environment.

[ hpa: the previous patch "Fix vmalloc_fault oops during lazy MMU
  updates" may cause a minor performance regression on
  bare metal.  This patch resolves that performance regression.  It is
  somewhat unclear to me if this is a good -stable candidate. ]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: http://lkml.kernel.org/r/1364045796-10720-2-git-send-email-konrad.wilk@oracle.com
Tested-by: Josh Boyer <jwboyer@redhat.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> SEE NOTE ABOVE
11 years agox86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates
Samu Kallio [Sat, 23 Mar 2013 13:36:35 +0000 (09:36 -0400)]
x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates

In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops
when lazy MMU updates are enabled, because set_pgd effects are being
deferred.

One instance of this problem is during process mm cleanup with memory
cgroups enabled. The chain of events is as follows:

- zap_pte_range enables lazy MMU updates
- zap_pte_range eventually calls mem_cgroup_charge_statistics,
  which accesses the vmalloc'd mem_cgroup per-cpu stat area
- vmalloc_fault is triggered which tries to sync the corresponding
  PGD entry with set_pgd, but the update is deferred
- vmalloc_fault oopses due to a mismatch in the PUD entries

The OOPs usually looks as so:

------------[ cut here ]------------
kernel BUG at arch/x86/mm/fault.c:396!
invalid opcode: 0000 [#1] SMP
.. snip ..
CPU 1
Pid: 10866, comm: httpd Not tainted 3.6.10-4.fc18.x86_64 #1
RIP: e030:[<ffffffff816271bf>]  [<ffffffff816271bf>] vmalloc_fault+0x11f/0x208
.. snip ..
Call Trace:
 [<ffffffff81627759>] do_page_fault+0x399/0x4b0
 [<ffffffff81004f4c>] ? xen_mc_extend_args+0xec/0x110
 [<ffffffff81624065>] page_fault+0x25/0x30
 [<ffffffff81184d03>] ? mem_cgroup_charge_statistics.isra.13+0x13/0x50
 [<ffffffff81186f78>] __mem_cgroup_uncharge_common+0xd8/0x350
 [<ffffffff8118aac7>] mem_cgroup_uncharge_page+0x57/0x60
 [<ffffffff8115fbc0>] page_remove_rmap+0xe0/0x150
 [<ffffffff8115311a>] ? vm_normal_page+0x1a/0x80
 [<ffffffff81153e61>] unmap_single_vma+0x531/0x870
 [<ffffffff81154962>] unmap_vmas+0x52/0xa0
 [<ffffffff81007442>] ? pte_mfn_to_pfn+0x72/0x100
 [<ffffffff8115c8f8>] exit_mmap+0x98/0x170
 [<ffffffff810050d9>] ? __raw_callee_save_xen_pmd_val+0x11/0x1e
 [<ffffffff81059ce3>] mmput+0x83/0xf0
 [<ffffffff810624c4>] exit_mm+0x104/0x130
 [<ffffffff8106264a>] do_exit+0x15a/0x8c0
 [<ffffffff810630ff>] do_group_exit+0x3f/0xa0
 [<ffffffff81063177>] sys_exit_group+0x17/0x20
 [<ffffffff8162bae9>] system_call_fastpath+0x16/0x1b

Calling arch_flush_lazy_mmu_mode immediately after set_pgd makes the
changes visible to the consistency checks.

Cc: <stable@vger.kernel.org>
RedHat-Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=914737
Tested-by: Josh Boyer <jwboyer@redhat.com>
Reported-and-Tested-by: Krishna Raman <kraman@redhat.com>
Signed-off-by: Samu Kallio <samu.kallio@aberdeencloud.com>
Link: http://lkml.kernel.org/r/1364045796-10720-1-git-send-email-konrad.wilk@oracle.com
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agoMerge tag 'nfs-for-3.9-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Wed, 10 Apr 2013 17:26:49 +0000 (10:26 -0700)]
Merge tag 'nfs-for-3.9-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull another nfs fixlet from Trond Myklebust:
 "I suddenly noticed that a one-line issue that I _thought_ I had fixed
  with the nfs41_walk_client_list patch was apparently still there in
  the pull request I sent earlier today.  I'm very sorry for not
  catching that in time.

   - Fix a brain fart in nfs41_walk_client_list"

* tag 'nfs-for-3.9-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Doh! Typo in the fix to nfs41_walk_client_list

11 years agoarm: mvebu: Fix the irq map function in SMP mode
Gregory CLEMENT [Fri, 5 Apr 2013 12:32:52 +0000 (14:32 +0200)]
arm: mvebu: Fix the irq map function in SMP mode

This patch fix the regression introduced by the commit 3202bf0157ccb
"arm: mvebu: Improve the SMP support of the interrupt controller":
GPIO IRQ were no longer delivered to the CPUs.

To be delivered to a CPU an interrupt must be enabled at CPU level and
at interrupt source level. Before the offending patch, all the
interrupts were enabled at source level during map() function. Mask()
and unmask() was done by handling the per-CPU part. It was fine when
running in UP with only one CPU.

The offending patch added support for SMP, in this case mask() and
unmask() was done by handling the interrupt source level part. The
per-CPU level part was handled by the affinity API to select the CPU
which will receive the interrupt. (Due to some hardware limitation
only one CPU at a time can received a given interrupt).

For "normal" interrupt __setup_irq() was called when an irq was
registered. irq_set_affinity() is called from this function, which
enabled the interrupt on one of the CPUs. Whereas for GPIO IRQ which
were chained interrupts, the irq_set_affinity() was never called and
none of the CPUs was selected to receive the interrupt.

With this patch all the interrupt are enable on the current CPU during
map() function. Enabling the interrupts on a CPU doesn't depend
anymore on irq_set_affinity() and then the chained irq are not anymore
a special case. However the CPU which will receive the irq can still
be modify later using irq_set_affinity().

Tested with Mirabox (A370) and Openblocks AX3 (AXP), rootfs mounted
over NFS, compiled with CONFIG_SMP=y/N.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Reported-by: Ryan Press <ryan@presslab.us>
Investigated-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Ryan Press <ryan@presslab.us>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>