pandora-kernel.git
13 years agoLinux-omap rebuilt: Merged in the first round of patches based on devel-stable
Tony Lindgren [Thu, 8 Dec 2011 01:15:51 +0000 (17:15 -0800)]
Linux-omap rebuilt: Merged in the first round of patches based on devel-stable

$ git checkout -b tmp-rebuild-1323306935 linus
$ git merge -m "Merge fixes fixes-non-critical cleanup dt soc board testing-board testing-misc cbus" fixes fixes-non-critical cleanup dt soc board testing-board testing-misc cbus
$ git merge -s ours master
$ git checkout master
$ git merge tmp-rebuild-1323306935

To view the changes since the last rebuild, please do
$ git diff f83c2a8cbb59981722d1ab610c79adfd034a2667..b376cb8c7ed36c6258314d2d369837c38f839b28 arch/arm/*omap*/

Merge branch 'master' into tmp-rebuild-1323306935

13 years agoMerge fixes fixes-non-critical cleanup dt soc board testing-board testing-misc cbus
Tony Lindgren [Thu, 8 Dec 2011 01:15:37 +0000 (17:15 -0800)]
Merge fixes fixes-non-critical cleanup dt soc board testing-board testing-misc cbus

Merge branches 'fixes', 'fixes-non-critical', 'cleanup', 'dt', 'soc', 'board', 'testing-board', 'testing-misc' and 'cbus' into tmp-rebuild-1323306935

13 years agocbus: tahvo: move irq_chip to our context structure
Felipe Balbi [Wed, 23 Nov 2011 14:00:47 +0000 (16:00 +0200)]
cbus: tahvo: move irq_chip to our context structure

in theory, we could have many tahvo devices connected
to different CBUS buses. Let's allow that to happen.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agocbus: retu: move irq_chip to our context structure
Felipe Balbi [Wed, 23 Nov 2011 14:00:46 +0000 (16:00 +0200)]
cbus: retu: move irq_chip to our context structure

in theory, we could have many retu devices connected
to different CBUS buses. The only thing preventing
that is the poweroff() function pointer which we need
to set.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agocbus: fix very old compile warning
Felipe Balbi [Wed, 23 Nov 2011 14:00:45 +0000 (16:00 +0200)]
cbus: fix very old compile warning

platform_driver.remove returns an 'int'.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agocbus: move the module_platform_driver where possible
Felipe Balbi [Wed, 23 Nov 2011 14:00:44 +0000 (16:00 +0200)]
cbus: move the module_platform_driver where possible

this allows us to delete a bunch of boilerplate code
from the drivers. While at that, also add missing
MODULE_ALIAS().

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agocbus: fix compile breakage
Felipe Balbi [Wed, 23 Nov 2011 14:00:43 +0000 (16:00 +0200)]
cbus: fix compile breakage

we need to include <linux/export.h> and <linux/module.h>

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoOMAP4: ID: Chip detection for OMAP4470
Leonid Iziumtsev [Thu, 10 Nov 2011 14:54:55 +0000 (17:54 +0300)]
OMAP4: ID: Chip detection for OMAP4470

Add support for detection of the next chip in the OMAP4 family: OMAP4470 ES1.0

For more details on OMAP4470, visit:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12869&contentId=123362

Signed-off-by: Leonid Iziumtsev <x0153368@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM OMAP: id: add chip id recognition for omap4430 es2.3
David Anders [Mon, 7 Nov 2011 18:17:54 +0000 (12:17 -0600)]
ARM OMAP: id: add chip id recognition for omap4430 es2.3

allow for the omap4430 es2.3 revision to be recognized in the
omap4_check_revision() function.

most aspects of all omap4430 es2.x versions are identical, however
a number of small variations such as default pullup or pulldown
resistor configurations vary between revisions.

detailed information on silicon errata for omap4430 revisions can
be found at http://focus.ti.com/pdfs/wtbu/swpz009D.pdf

Signed-off-by: David Anders <x0132446@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP: rx51: enable tsc2005 touchscreen
Aaro Koskinen [Fri, 2 Dec 2011 16:29:13 +0000 (18:29 +0200)]
ARM: OMAP: rx51: enable tsc2005 touchscreen

Enable TSC2005 touchscreen driver on the RX-51 board by providing the
needed platform data.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Reviewed-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP3: cm-t35: fix mux mode for DSS pins
Igor Grinberg [Wed, 7 Dec 2011 21:15:07 +0000 (13:15 -0800)]
ARM: OMAP3: cm-t35: fix mux mode for DSS pins

OMAP pin mux configuration API has been used incorrectly resulting
in wrong mux mode set for several DSS pins.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP3: cm-t35: fix USB hub
Igor Grinberg [Wed, 7 Dec 2011 21:15:06 +0000 (13:15 -0800)]
ARM: OMAP3: cm-t35: fix USB hub

USB hub is not functional until is reset.
Reset the USB hub on SB-T35.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP3: cm-t35: fix audio
Igor Grinberg [Wed, 7 Dec 2011 21:15:06 +0000 (13:15 -0800)]
ARM: OMAP3: cm-t35: fix audio

TWL4030 audio codec is not being registered if no platform data is
supplied. Provide platform data for the TWL4030 audio codec.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP3: cm-t35: fix DSS regulator supply
Igor Grinberg [Wed, 7 Dec 2011 21:15:06 +0000 (13:15 -0800)]
ARM: OMAP3: cm-t35: fix DSS regulator supply

cm-t35 DSS suplies are connected to VIO.
In fact, TPS65930 does not have VPLL2.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP3: cm-t35: fix ads7846 touchscreen
Igor Grinberg [Wed, 7 Dec 2011 21:15:05 +0000 (13:15 -0800)]
ARM: OMAP3: cm-t35: fix ads7846 touchscreen

ads7846 driver fails to find the regulator supply and
as a result the touchscreen is not working.
Fix this by adding a regulator supply for the ads7846 driver.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP: AM3517: Support for MMC1 voltages
Abhilash K V [Wed, 7 Dec 2011 21:15:05 +0000 (13:15 -0800)]
ARM: OMAP: AM3517: Support for MMC1 voltages

This patch fixes the following error message which appears
while intializing MMC1 on the AM3517 EVM base-board:
    mmc0: host doesn't support card's voltages
    mmc0: error -22 whilst initialising SD card
The ocr_mask, which enumerates the volatges supported by the
MMC card was not being indicated before, assuming that a separate
Vcc regulator maybe another controllable regulator driver would be
doing this. This patch statically specifies a subset of the voltages
supported by the MMC driver, which are provided by the current fixed
voltage regulator on AM3517 EVM.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP: AM3517EVM: Add support for base-board MMC slot
Vaibhav Hiremath [Wed, 7 Dec 2011 21:15:04 +0000 (13:15 -0800)]
ARM: OMAP: AM3517EVM: Add support for base-board MMC slot

Add support for base-board MMC slot

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoarm:omap:am33xx: Update common OMAP machine specific sources
Afzal Mohammed [Fri, 2 Dec 2011 06:43:22 +0000 (12:13 +0530)]
arm:omap:am33xx: Update common OMAP machine specific sources

This patch updates the common machine specific source files for
support for AM33XX/AM335x with cpu type, macros for identification of
AM33XX/AM335X device.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
[tony@atomide.com: updated for map_io and common.h changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM:OMAP4 add Phytec phyCORE-OMAP4 board
Jan Weitzel [Wed, 7 Dec 2011 20:21:22 +0000 (12:21 -0800)]
ARM:OMAP4 add Phytec phyCORE-OMAP4 board

This adds support for the Phytec OMAP4430 board called phyCORE-OMAP4 PCM049.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
[tony@atomide.com: updated for timer and twl cleanup, and to select the board by default]
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoInitial B&N Nook Color (encore) support
Oleg Drokin [Wed, 7 Dec 2011 20:21:21 +0000 (12:21 -0800)]
Initial B&N Nook Color (encore) support

Bare-bones board file, comes with serial console, gpio keys,
MMC/SDCard and USB (peripheral) support.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
[tony@atomide.com: updated for irq and timer cleanup and to select the board by default]
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP2+ i2c NACK without STP
Jan Weitzel [Wed, 7 Dec 2011 19:50:16 +0000 (11:50 -0800)]
ARM: OMAP2+ i2c NACK without STP

On OMAP4 OMAP_I2C_STAT_NACK is causing a timeout on the next access.
The isr cleans all flags in OMAP_I2C_CON_REG by setting OMAP_I2C_CON_STP
OMAP_I2C_CON_STP is also set in omap_i2c_xfer_msg on the last message.

According to the TI TSR the sequence for OMAP_I2C_STAT_NACK and
OMAP_I2C_STAT_AL are nearly the same.
Removing the OMAP_I2C_CON_STP part in the isr fix the problem.
Tested on OMAP4430 and OMAP3530 (here NACK was not a problem)
Fixes also booting on 2430sdp.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Acked-by: Tony Lindgren <tony@atomide.com>
13 years agocpufreq: OMAP: fixup for omap_device changes, include <linux/module.h>
Kevin Hilman [Wed, 7 Dec 2011 20:09:42 +0000 (12:09 -0800)]
cpufreq: OMAP: fixup for omap_device changes, include <linux/module.h>

Minor fixups to work starting with v3.2:
- use the new omap_device API for getting a device by name.
- need to include <linux/module.h>

Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: fix freq_table leak
Nishanth Menon [Wed, 7 Dec 2011 20:09:38 +0000 (12:09 -0800)]
cpufreq: OMAP: fix freq_table leak

We use a single frequency table for multiple CPUs. But, with
OMAP4, since we have multiple CPUs, the cpu_init call for CPU1
causes freq_table previously allocated for CPU0 to be overwritten.
In addition, we dont free the table on exit path.

We solve this by maintaining an atomic type counter to ensure
just a single table exists at a given time.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: put clk if cpu_init failed
Nishanth Menon [Wed, 7 Dec 2011 20:09:20 +0000 (12:09 -0800)]
cpufreq: OMAP: put clk if cpu_init failed

Release the mpu_clk in fail paths.

Reported-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: only supports OPP library
Nishanth Menon [Wed, 7 Dec 2011 20:08:57 +0000 (12:08 -0800)]
cpufreq: OMAP: only supports OPP library

OMAP2 is the only family using clk_[init|exit]_cpufreq_table, however,
the cpufreq code does not currently use clk_init_cpufreq_table. As a
result, it is unusuable for OMAP2 and only usable only on platforms
using OPP library.

Remove the unbalanced clk_exit_cpufreq_table().  Any platforms where
OPPs are not availble will fail on init because a freq table will not
be properly initialized.

Signed-off-by: Nishanth Menon <nm@ti.com>
[khilman@ti.com: changelog edits, and graceful failure mode changes]
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: dont support !freq_table
Nishanth Menon [Wed, 7 Dec 2011 20:08:50 +0000 (12:08 -0800)]
cpufreq: OMAP: dont support !freq_table

OMAP2+ all have frequency tables, hence the hacks we had for older
silicon do not need to be carried forward. As part of this change,
use cpufreq_frequency_table_target to find the best match for
frequency requested.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: deny initialization if no mpudev
Nishanth Menon [Wed, 7 Dec 2011 20:08:45 +0000 (12:08 -0800)]
cpufreq: OMAP: deny initialization if no mpudev

if we do not have mpu_dev we normally fail in cpu_init. It is better
to fail driver registration if the devices are not available.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: move clk name decision to init
Nishanth Menon [Wed, 7 Dec 2011 20:08:40 +0000 (12:08 -0800)]
cpufreq: OMAP: move clk name decision to init

Clk name does'nt need to dynamically detected during clk init.
move them off to driver initialization, if we dont have a clk name,
there is no point in registering the driver anyways. The actual clk
get and put is left at cpu_init and exit functions.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: notify even with bad boot frequency
Colin Cross [Wed, 7 Dec 2011 20:08:35 +0000 (12:08 -0800)]
cpufreq: OMAP: notify even with bad boot frequency

Sometimes, bootloaders starts up with a frequency which is not
in the OPP table. At cpu_init, policy->cur contains the frequency
we pick at boot.  It is possible that system might have fixed
it's boot frequency later on as part of power initialization.
After this condition, the first call to omap_target results in the
following:

omap_getspeed(actual device frequency) != policy->cur(frequency that
cpufreq thinks that the system is at), and it is possible that
freqs.old == freqs.new (because the governor requested a scale down).

We exit without triggering the notifiers in the current code, which
does'nt let code which depends on cpufreq_notify_transition to have
accurate information as to what the system frequency is.

Instead, we do a normal transition if policy->cur is wrong, then,
freqs.old will be the actual cpu frequency, freqs.new will be the
actual new cpu frequency and all required notifiers have the accurate
information.

Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Colin Cross <ccross@google.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: Enable all CPUs in shared policy mask
Todd Poynor [Wed, 7 Dec 2011 20:08:31 +0000 (12:08 -0800)]
cpufreq: OMAP: Enable all CPUs in shared policy mask

Enable all CPUs in the shared policy in the CPU init callback.
Otherwise, the governor CPUFREQ_GOV_START event is invoked with
a policy that only includes the first CPU, leaving other CPUs
uninitialized by the governor.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: Add SMP support for OMAP4+
Russell King [Wed, 7 Dec 2011 20:08:25 +0000 (12:08 -0800)]
cpufreq: OMAP: Add SMP support for OMAP4+

On OMAP SMP configuartion, both processors share the voltage
and clock. So both CPUs needs to be scaled together and hence
needs software co-ordination.

Also, update lpj with reference value to avoid progressive error.

Adjust _both_ the per-cpu loops_per_jiffy and global lpj. Calibrate
them with with reference to the initial values to avoid a
progressively bigger and bigger error in the value over time.

While at this, re-use the notifiers for UP/SMP since on UP machine or
UP_ON_SMP policy->cpus mask would contain only the boot CPU.

Based on initial SMP support by Santosh Shilimkar.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[khilman@ti.com: due to overlap/rework, combined original Santosh patch
                 and Russell's rework]
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agocpufreq: OMAP: cleanup for multi-SoC support, move into drivers/cpufreq
Santosh Shilimkar [Wed, 7 Dec 2011 20:08:18 +0000 (12:08 -0800)]
cpufreq: OMAP: cleanup for multi-SoC support, move into drivers/cpufreq

Move OMAP cpufreq driver from arch/arm/mach-omap2 into
drivers/cpufreq, along with a few cleanups:

- generalize support for better handling of different SoCs in the OMAP
- use OPP layer instead of OMAP clock internals for frequency table init

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[khilman@ti.com: move to drivers]
Signed-off-by: Kevin Hilman <khilman@ti.com>
13 years agoarm:omap:am33xx: Update common omap platform files
Afzal Mohammed [Wed, 7 Dec 2011 19:48:09 +0000 (11:48 -0800)]
arm:omap:am33xx: Update common omap platform files

This patch updates the common platform files with AM335X device
support (AM33XX family).

The approach taken in this patch is,
AM33XX device will be considered as OMAP3 variant, and a separate
SoC class created for AM33XX family of devices with a subclass type
for AM335X device, which is newly added device in the family.

This means, cpu_is_omap34xx(), cpu_is_am33xx() and cpu_is_am335x()
checks will return success on AM335X device.
A kernel config option CONFIG_SOC_OMAPAM33XX is added under OMAP3
to include support for AM33XX build.

Also, cpu_mask and RATE_IN_XXX flags have crossed 8 bit hence
struct clksel_rate.flags, struct prcm_config.flags and cpu_mask
are changed to u16 from u8.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP2+: board-generic: Add missing handle_irq callbacks
Benoit Cousson [Wed, 7 Dec 2011 19:47:40 +0000 (11:47 -0800)]
ARM: OMAP2+: board-generic: Add missing handle_irq callbacks

The following commit: 6b2f55d7851aa358d3a99cff344c560c4967f042,
is adding the support for the CONFIG_MULTI_IRQ_HANDLER but did
not update all the machine descriptors supported in the DT
board-generic.c file.
It thus break the DT boot on OMAP3 and OMAP4 boards.

Add the proper handle_irq callbacks for OMAP3 and OMAP4 generic
machine descriptors.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: 7194/1: OMAP: Fix build after a merge between v3.2-rc4 and ARM restart changes
Tony Lindgren [Tue, 6 Dec 2011 16:50:42 +0000 (17:50 +0100)]
ARM: 7194/1: OMAP: Fix build after a merge between v3.2-rc4 and ARM restart changes

ARM restart changes needed changes to common.h to make it local.
This conflicted with v3.2-rc4 DSS related hwmod changes that
git mergetool was not able to handle.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 7192/1: OMAP: Fix build error for omap1_defconfig
Tony Lindgren [Tue, 6 Dec 2011 04:45:37 +0000 (05:45 +0100)]
ARM: 7192/1: OMAP: Fix build error for omap1_defconfig

Otherwise we get the following error:

In function 'omap_init_consistent_dma_size':
error: implicit declaration of function 'init_consistent_dma_size'

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoMerge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into devel-stable
Russell King [Mon, 5 Dec 2011 23:27:54 +0000 (23:27 +0000)]
Merge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into devel-stable

13 years agoMerge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux...
Russell King [Mon, 5 Dec 2011 23:20:17 +0000 (23:20 +0000)]
Merge branch 'for-rmk' of git://git./linux/kernel/git/will/linux into devel-stable

Conflicts:
arch/arm/common/gic.c
arch/arm/plat-omap/include/plat/common.h

13 years agoARM: 7189/1: OMAP3: Fix build break in cpuidle34xx.c because of irq function
Santosh Shilimkar [Mon, 5 Dec 2011 08:46:24 +0000 (09:46 +0100)]
ARM: 7189/1: OMAP3: Fix build break in cpuidle34xx.c because of irq function

Fix the below build break by including common.h

arch/arm/mach-omap2/cpuidle34xx.c: In function 'omap3_enter_idle':
arch/arm/mach-omap2/cpuidle34xx.c:117: error: implicit declaration of function 'omap_irq_pending'
make[1]: *** [arch/arm/mach-omap2/cpuidle34xx.o] Error 1
make: *** [arch/arm/mach-omap2] Error 2

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 7188/1: OMAP2PLUS: Fix build error: 'omap2/omap3_intc_handle_irq' undeclared.
Santosh Shilimkar [Mon, 5 Dec 2011 08:44:58 +0000 (09:44 +0100)]
ARM: 7188/1: OMAP2PLUS: Fix build error: 'omap2/omap3_intc_handle_irq' undeclared.

Fix the build break by adding the necessary irq functions to
common header.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: OMAP1: recalculate loops per jiffy after dpll1 reprogram
Janusz Krzysztofik [Thu, 1 Dec 2011 20:13:02 +0000 (21:13 +0100)]
ARM: OMAP1: recalculate loops per jiffy after dpll1 reprogram

Otherwise timing is inaccurate, resulting in devices which depend on it,
like omap-keypad, broken.

Tested on Amstrad Delta.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
[tony@atomide.com: removed comment referencing a development branch]
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoMerge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel...
Russell King [Sat, 3 Dec 2011 09:11:54 +0000 (09:11 +0000)]
Merge branch 'irqchip-consolidation' of git://git./linux/kernel/git/maz/arm-platforms into devel-stable

13 years agoMerge branches 'perf/event-nos', 'perf/updates' and 'perf/omap4' into for-rmk
Will Deacon [Fri, 2 Dec 2011 15:22:18 +0000 (15:22 +0000)]
Merge branches 'perf/event-nos', 'perf/updates' and 'perf/omap4' into for-rmk

13 years agoarm: pmu: allow platform specific irq enable/disable handling
Ming Lei [Wed, 2 Mar 2011 07:00:08 +0000 (15:00 +0800)]
arm: pmu: allow platform specific irq enable/disable handling

This patch introduces .enable_irq and .disable_irq into
struct arm_pmu_platdata, so platform specific irq enablement
can be handled after request_irq, and platform specific irq
disablement can be handled before free_irq.

This patch is for support of  pmu irq routed from CTI on omap4.

Acked-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoarm: introduce cross trigger interface helpers
Ming Lei [Mon, 24 Oct 2011 14:45:53 +0000 (15:45 +0100)]
arm: introduce cross trigger interface helpers

OMAP4 uses cross trigger interface(CTI) to route
performance monitor irq to GIC, so introduce cti
helpers to make access for cti easily.

Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: remove unused armpmu_get_max_events
Will Deacon [Mon, 14 Nov 2011 10:33:05 +0000 (10:33 +0000)]
ARM: perf: remove unused armpmu_get_max_events

armpmu_get_max_events is only called from perf_num_counters, so we can
inline it there. It existed as a separate entity as a hangover from
the original perf-based oprofile implementation.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: add support for stalled cycle ABI events
Will Deacon [Thu, 29 Sep 2011 17:23:39 +0000 (18:23 +0100)]
ARM: perf: add support for stalled cycle ABI events

Commit 8f622422 ("perf events: Add generic front-end and back-end
stalled cycle event definitions") added two new ABI events for counting
stalled cycles.

This patch adds support for these new events to the ARM perf
implementation.

Cc: Jamie Iles <jamie@jamieiles.com>
Cc: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: clean and update ARMv7 event numbers
Will Deacon [Thu, 29 Sep 2011 14:29:02 +0000 (15:29 +0100)]
ARM: perf: clean and update ARMv7 event numbers

This patch updates the ARMv7 perf event numbers so that:

(1) A consistent naming scheme is used between different CPUs.

(2) Only events actually used by Linux are described.

(3) Where possible, architected events are used in preference to
    CPU-specific events.

This results in the removal of a load of unused, hardcoded data and
makes it more clear as to which events are supported on each PMU.

Cc: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: exynos4: Fix build error
Axel Lin [Thu, 1 Dec 2011 15:25:45 +0000 (23:25 +0800)]
ARM: exynos4: Fix build error

Trivial fix to fix below build error:

  CC      arch/arm/mach-exynos/mach-universal_c210.o
arch/arm/mach-exynos/mach-universal_c210.c:24: error: expected identifier or '(' before '<' token

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
13 years agoARM: exynos4: Fix build error due to 'gic_bank_offset' undeclared
Axel Lin [Thu, 1 Dec 2011 15:24:30 +0000 (23:24 +0800)]
ARM: exynos4: Fix build error due to 'gic_bank_offset' undeclared

Fix below build error:
  CC      arch/arm/mach-exynos/cpu.o
arch/arm/mach-exynos/cpu.c: In function 'exynos4_init_irq':
arch/arm/mach-exynos/cpu.c:245: error: 'gic_bank_offset' undeclared (first use in this function)
arch/arm/mach-exynos/cpu.c:245: error: (Each undeclared identifier is reported only once
arch/arm/mach-exynos/cpu.c:245: error: for each function it appears in.)
arch/arm/mach-exynos/cpu.c:243: warning: unused variable 'bank_offset'
make[1]: *** [arch/arm/mach-exynos/cpu.o] Error 1
make: *** [arch/arm/mach-exynos] Error 2

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
13 years agoLinux-omap rebuilt: Updated to -rc4 with fixes merged
Tony Lindgren [Fri, 2 Dec 2011 02:03:35 +0000 (18:03 -0800)]
Linux-omap rebuilt: Updated to -rc4 with fixes merged

$ git checkout -b tmp-rebuild-1322791391 linus
$ git merge -m "Merge fixes testing-misc cleanup dt soc board testing-board cbus" fixes testing-misc cleanup dt soc board testing-board cbus
$ git merge -s ours master
$ git checkout master
$ git merge tmp-rebuild-1322791391

To view the changes since the last rebuild, please do
$ git diff 38e1447b0a0e8d20a232e1e218f38de9af612c30..17eb4e3870aba1517558cefdc03844d8316d490d arch/arm/*omap*/

Merge branch 'master' into tmp-rebuild-1322791391

13 years agoMerge fixes testing-misc cleanup dt soc board testing-board cbus
Tony Lindgren [Fri, 2 Dec 2011 02:03:17 +0000 (18:03 -0800)]
Merge fixes testing-misc cleanup dt soc board testing-board cbus

Merge branches 'fixes', 'testing-misc', 'cleanup', 'dt', 'soc', 'board', 'testing-board' and 'cbus' into tmp-rebuild-1322791391

13 years agoARM: OMAP1: recalculate loops per jiffy after dpll1 reprogram
Janusz Krzysztofik [Thu, 1 Dec 2011 20:13:02 +0000 (21:13 +0100)]
ARM: OMAP1: recalculate loops per jiffy after dpll1 reprogram

Otherwise timing is inaccurate, resulting in devices which depend on it,
like omap-keypad, broken.

Created and tested on top of linux-omap/fixes on Amstrad Delta.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP1: Fix ckctl value used for dpll1 defualt rate
Janusz Krzysztofik [Thu, 1 Dec 2011 20:13:01 +0000 (21:13 +0100)]
ARM: OMAP1: Fix ckctl value used for dpll1 defualt rate

Use the exact value found in omap1_rate_table, otherwise I have been
experiencing issues with correct timekeeping on my Amstrad Delta.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
[tony@atomide.com: removed comment referencing a development branch]
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP1: Fix ckctl value used for dpll1 defualt rate
Janusz Krzysztofik [Thu, 1 Dec 2011 20:13:01 +0000 (21:13 +0100)]
ARM: OMAP1: Fix ckctl value used for dpll1 defualt rate

Use the exact value found in omap1_rate_table, otherwise I have been
experiencing issues with correct timekeeping on my Amstrad Delta.

Created and tested on top of linux-omap/fixes, not yet in 3.2-rc.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP1: Remove unsafe clock values from omap1_defconfig
Janusz Krzysztofik [Thu, 1 Dec 2011 20:30:39 +0000 (21:30 +0100)]
ARM: OMAP1: Remove unsafe clock values from omap1_defconfig

DPLL1 reprogramming to a different rate is actually blocked inside
omap1_select_table_rate(), resulting in the defalut rate of 60 MHz
always used instead of the one selected in .config. OTOH, in
omap1_defconfig we currently rely on Kconfig options for the supported
MHz rates in case of boards which boot with dpll1 not set correctly by
their boot loaders.

This means that before we allow for reprogramming of dpll1 rate, we
should remove all unsafe clock selections from omap1_defconfig,
otherwise it will stop booting on boards with imperfect boot loaders,
as it would always try to change to 216MHz.

Keep only one safe clock rate per each supported xtal frequency, i.e.
60MHZ dpll1 for 12MHz xtal and 182MHz dpll1 for 13MHz xtal.

BTW, this change goes into the direction of removing all OMAP1 clock
rate options, planned for next merge window.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP1: Fix reprogramming of DPLL1 for systems that boot at rates below 60MHz
Tony Lindgren [Fri, 2 Dec 2011 01:47:06 +0000 (17:47 -0800)]
ARM: OMAP1: Fix reprogramming of DPLL1 for systems that boot at rates below 60MHz

Commit e9b7086b80c4d9e354f4edc9e280ae85a60df408 (ARM: OMAP: Fix
reprogramming of dpll1 rate) fixed a regression for systems that
did not rely on bootloader set rates.

However, it also introduced a new problem where the rates selected
in .config would not take affect as omap1_select_table_rate
currently refuses to reprogram DPLL1 if it's already initialized.

This was not a problem earlier, as the reprogramming was done
earlier with ck_dpll1_p->rate uninitialized.

Fix this by forcing the reprogramming on systems booting at rates
below 60MHz. Note that the long term fix is to make the rates
SoC specific later on.

Thanks for Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> for figuring
this one out.

Reported-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoLinux 3.2-rc4 v3.2-rc4
Linus Torvalds [Thu, 1 Dec 2011 22:56:01 +0000 (14:56 -0800)]
Linux 3.2-rc4

13 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
Linus Torvalds [Thu, 1 Dec 2011 22:55:34 +0000 (14:55 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jlbec/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (31 commits)
  ocfs2: avoid unaligned access to dqc_bitmap
  ocfs2: Use filemap_write_and_wait() instead of write_inode_now()
  ocfs2: honor O_(D)SYNC flag in fallocate
  ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2
  ocfs2: send correct UUID to cleancache initialization
  ocfs2: Commit transactions in error cases -v2
  ocfs2: make direntry invalid when deleting it
  fs/ocfs2/dlm/dlmlock.c: free kmem_cache_zalloc'd data using kmem_cache_free
  ocfs2: Avoid livelock in ocfs2_readpage()
  ocfs2: serialize unaligned aio
  ocfs2: Implement llseek()
  ocfs2: Fix ocfs2_page_mkwrite()
  ocfs2: Add comment about orphan scanning
  ocfs2: Clean up messages in the fs
  ocfs2/cluster: Cluster up now includes network connections too
  ocfs2/cluster: Add new function o2net_fill_node_map()
  ocfs2/cluster: Fix output in file elapsed_time_in_ms
  ocfs2/dlm: dlmlock_remote() needs to account for remastery
  ocfs2/dlm: Take inflight reference count for remotely mastered resources too
  ocfs2/dlm: Cleanup dlm_wait_for_node_death() and dlm_wait_for_node_recovery()
  ...

13 years agoocfs2: avoid unaligned access to dqc_bitmap
Akinobu Mita [Tue, 15 Nov 2011 22:56:34 +0000 (14:56 -0800)]
ocfs2: avoid unaligned access to dqc_bitmap

The dqc_bitmap field of struct ocfs2_local_disk_chunk is 32-bit aligned,
but not 64-bit aligned.  The dqc_bitmap is accessed by ocfs2_set_bit(),
ocfs2_clear_bit(), ocfs2_test_bit(), or ocfs2_find_next_zero_bit().  These
are wrapper macros for ext2_*_bit() which need to take an unsigned long
aligned address (though some architectures are able to handle unaligned
address correctly)

So some 64bit architectures may not be able to access the dqc_bitmap
correctly.

This avoids such unaligned access by using another wrapper functions for
ext2_*_bit().  The code is taken from fs/ext4/mballoc.c which also need to
handle unaligned bitmap access.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
13 years agoMerge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur...
Linus Torvalds [Thu, 1 Dec 2011 19:53:54 +0000 (11:53 -0800)]
Merge branch 'fixes' of ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm

* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: 7182/1: ARM cpu topology: fix warning
  ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below
  ARM: 7180/1: Change kprobes testcase with unpredictable STRD instruction
  ARM: 7177/1: GIC: avoid skipping non-existent PPIs in irq_start calculation
  ARM: 7176/1: cpu_pm: register GIC PM notifier only once
  ARM: 7175/1: add subname parameter to mfp_set_groupg callers
  ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels
  ARM: 7172/1: dma: Drop GFP_COMP for DMA memory allocations
  ARM: 7171/1: unwind: add unwind directives to bitops assembly macros
  ARM: 7170/2: fix compilation breakage in entry-armv.S
  ARM: 7168/1: use cache type functions for arch_get_unmapped_area
  ARM: perf: check that we have a platform device when reserving PMU
  ARM: 7166/1: Use PMD_SHIFT instead of PGDIR_SHIFT in dma-consistent.c
  ARM: 7165/2: PL330: Fix typo in _prepare_ccr()
  ARM: 7163/2: PL330: Only register usable channels
  ARM: 7162/1: errata: tidy up Kconfig options for PL310 errata workarounds
  ARM: 7161/1: errata: no automatic store buffer drain
  ARM: perf: initialise used_mask for fake PMU during validation
  ARM: PMU: remove pmu_init declaration
  ARM: PMU: re-export release_pmu symbol to modules

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Thu, 1 Dec 2011 16:28:53 +0000 (08:28 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix meta data raid-repair merge problem
  Btrfs: skip allocation attempt from empty cluster
  Btrfs: skip block groups without enough space for a cluster
  Btrfs: start search for new cluster at the beginning
  Btrfs: reset cluster's max_size when creating bitmap
  Btrfs: initialize new bitmaps' list
  Btrfs: fix oops when calling statfs on readonly device
  Btrfs: Don't error on resizing FS to same size
  Btrfs: fix deadlock on metadata reservation when evicting a inode
  Fix URL of btrfs-progs git repository in docs
  btrfs scrub: handle -ENOMEM from init_ipath()

13 years agoBtrfs: fix meta data raid-repair merge problem
Jan Schmidt [Thu, 1 Dec 2011 14:30:36 +0000 (09:30 -0500)]
Btrfs: fix meta data raid-repair merge problem

Commit 4a54c8c16 introduced raid-repair, killing the individual
readpage_io_failed_hook entries from inode.c and disk-io.c. Commit
4bb31e92 introduced new readahead code, adding a readpage_io_failed_hook to
disk-io.c.

The raid-repair commit had logic to disable raid-repair, if
readpage_io_failed_hook is set. Thus, the readahead commit effectively
disabled raid-repair for meta data.

This commit changes the logic to always attempt raid-repair when needed and
call the readpage_io_failed_hook in case raid-repair fails. This is much
more straight forward and should have been like that from the beginning.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Reported-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Thu, 1 Dec 2011 00:25:02 +0000 (16:25 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB: Fix RCU lockdep splats
  IB/ipoib: Prevent hung task or softlockup processing multicast response
  IB/qib: Fix over-scheduling of QSFP work
  RDMA/cxgb4: Fix retry with MPAv1 logic for MPAv2
  RDMA/cxgb4: Fix iw_cxgb4 count_rcqes() logic
  IB/qib: Don't use schedule_work()

13 years agoMerge branch 'dt-for-linus' of git://sources.calxeda.com/kernel/linux
Linus Torvalds [Thu, 1 Dec 2011 00:24:43 +0000 (16:24 -0800)]
Merge branch 'dt-for-linus' of git://sources.calxeda.com/kernel/linux

* 'dt-for-linus' of git://sources.calxeda.com/kernel/linux:
  of: Add Silicon Image vendor prefix
  of/irq: of_irq_init: add check for parent equal to child node

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Thu, 1 Dec 2011 00:24:24 +0000 (16:24 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/broonie/regulator

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: twl: fix twl4030 support for smps regulators
  regulator: fix use after free bug
  regulator: aat2870: Fix the logic of checking if no id is matched in aat2870_get_regulator

13 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Thu, 1 Dec 2011 00:23:59 +0000 (16:23 -0800)]
Merge branch 'fixes' of git://git./linux/kernel/git/arm/arm-soc

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (45 commits)
  ARM: ux500: update defconfig
  ARM: u300: update defconfig
  ARM: at91: enable additional boards in existing soc defconfig files
  ARM: at91: refresh soc defconfig files for 3.2
  ARM: at91: rename defconfig files appropriately
  ARM: OMAP2+: Fix Compilation error when omap_l3_noc built as module
  ARM: OMAP2+: Remove empty io.h
  ARM: OMAP2: select ARM_AMBA if OMAP3_EMU is defined
  ARM: OMAP: smartreflex: fix IRQ handling bug
  ARM: OMAP: PM: only register TWL with voltage layer when device is present
  ARM: OMAP: hwmod: Fix the addr space, irq, dma count APIs
  arm: mx28: fix bit operation in clock setting
  ARM: imx: export imx_ioremap
  ARM: imx/mm-imx3: conditionally compile i.MX31 and i.MX35 code
  ARM: mx5: Fix checkpatch warnings in cpu-imx5.c
  MAINTAINERS: Add missing directory
  ARM: imx: drop 'ARCH_MX31' and 'ARCH_MX35'
  ARM: imx6q: move clock register map to machine_desc.map_io
  ARM: pxa168/gplugd: add the correct SSP device
  ARM: Update mach-types to fix mxs build breakage
  ...

13 years agoARM: 7182/1: ARM cpu topology: fix warning
Vincent Guittot [Tue, 29 Nov 2011 14:50:20 +0000 (15:50 +0100)]
ARM: 7182/1: ARM cpu topology: fix warning

kernel/sched.c:7354:2: warning: initialization from incompatible pointer type

Align cpu_coregroup_mask prototype interface with sched_domain_mask_f typedef
use int cpu instead of unsigned int cpu

Cc: <stable@vger.kernel.org>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below
Jon Medhurst (Tixy) [Tue, 29 Nov 2011 07:16:02 +0000 (08:16 +0100)]
ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below

The SWP instruction is deprecated on ARMv6 and with ARMv7 it will be
UNDEFINED when CONFIG_SWP_EMULATE is selected. In this case, probing a
SWP instruction will cause an oops when the kprobes emulation code
executes an undefined instruction.

As the SWP instruction should be rare or non-existent in kernels for
ARMv6 and later, we can simply avoid these problems by not allowing
probing of these.

Reported-by: Leif Lindholm <leif.lindholm@arm.com>
Tested-by: Leif Lindholm <leif.lindholm@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 7180/1: Change kprobes testcase with unpredictable STRD instruction
Jon Medhurst (Tixy) [Tue, 29 Nov 2011 07:14:35 +0000 (08:14 +0100)]
ARM: 7180/1: Change kprobes testcase with unpredictable STRD instruction

There is a kprobes testcase for the instruction "strd r2, [r3], r4".
This has unpredictable behaviour as it uses r3 for register writeback
addressing and also stores it to memory.

On a cortex A9, this testcase would fail because the instruction writes
the updated value of r3 to memory, whereas the kprobes emulation code
writes the original value.

Fix this by changing testcase to used r5 instead of r3.

Reported-by: Leif Lindholm <leif.lindholm@arm.com>
Tested-by: Leif Lindholm <leif.lindholm@arm.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoBtrfs: skip allocation attempt from empty cluster
Alexandre Oliva [Wed, 30 Nov 2011 18:43:00 +0000 (13:43 -0500)]
Btrfs: skip allocation attempt from empty cluster

If we don't have a cluster, don't bother trying to allocate from it,
jumping right away to the attempt to allocate a new cluster.

Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: skip block groups without enough space for a cluster
Alexandre Oliva [Wed, 30 Nov 2011 18:43:00 +0000 (13:43 -0500)]
Btrfs: skip block groups without enough space for a cluster

We test whether a block group has enough free space to hold the
requested block, but when we're doing clustered allocation, we can
save some cycles by testing whether it has enough room for the cluster
upfront, otherwise we end up attempting to set up a cluster and
failing.  Only in the NO_EMPTY_SIZE loop do we attempt an unclustered
allocation, and by then we'll have zeroed the cluster size, so this
patch won't stop us from using the block group as a last resort.

Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: start search for new cluster at the beginning
Alexandre Oliva [Wed, 30 Nov 2011 18:43:00 +0000 (13:43 -0500)]
Btrfs: start search for new cluster at the beginning

Instead of starting at zero (offset is always zero), request a cluster
starting at search_start, that denotes the beginning of the current
block group.

Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: reset cluster's max_size when creating bitmap
Alexandre Oliva [Wed, 30 Nov 2011 18:43:00 +0000 (13:43 -0500)]
Btrfs: reset cluster's max_size when creating bitmap

The field that indicates the size of the largest contiguous chunk of
free space in the cluster is not initialized when setting up bitmaps,
it's only increased when we find a larger contiguous chunk.  We end up
retaining a larger value than appropriate for highly-fragmented
clusters, which may cause pointless searches for large contiguous
groups, and even cause clusters that do not meet the density
requirements to be set up.

Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: initialize new bitmaps' list
Alexandre Oliva [Mon, 28 Nov 2011 14:04:43 +0000 (12:04 -0200)]
Btrfs: initialize new bitmaps' list

We're failing to create clusters with bitmaps because
setup_cluster_no_bitmap checks that the list is empty before inserting
the bitmap entry in the list for setup_cluster_bitmap, but the list
field is only initialized when it is restored from the on-disk free
space cache, or when it is written out to disk.

Besides a potential race condition due to the multiple use of the list
field, filesystem performance severely degrades over time: as we use
up all non-bitmap free extents, the try-to-set-up-cluster dance is
done at every metadata block allocation.  For every block group, we
fail to set up a cluster, and after failing on them all up to twice,
we fall back to the much slower unclustered allocation.

To make matters worse, before the unclustered allocation, we try to
create new block groups until we reach the 1% threshold, which
introduces additional bitmaps and thus block groups that we'll iterate
over at each metadata block request.

13 years agoBtrfs: fix oops when calling statfs on readonly device
Li Zefan [Mon, 28 Nov 2011 08:43:00 +0000 (16:43 +0800)]
Btrfs: fix oops when calling statfs on readonly device

To reproduce this bug:

  # dd if=/dev/zero of=img bs=1M count=256
  # mkfs.btrfs img
  # losetup -r /dev/loop1 img
  # mount /dev/loop1 /mnt
  OOPS!!

It triggered BUG_ON(!nr_devices) in btrfs_calc_avail_data_space().

To fix this, instead of checking write-only devices, we check all open
deivces:

  # df -h /dev/loop1
  Filesystem            Size  Used Avail Use% Mounted on
  /dev/loop1            250M   28K  238M   1% /mnt

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
13 years agoBtrfs: Don't error on resizing FS to same size
Mike Fleetwood [Fri, 18 Nov 2011 18:55:01 +0000 (18:55 +0000)]
Btrfs: Don't error on resizing FS to same size

It seems overly harsh to fail a resize of a btrfs file system to the
same size when a shrink or grow would succeed.  User app GParted trips
over this error.  Allow it by bypassing the shrink or grow operation.

Signed-off-by: Mike Fleetwood <mike.fleetwood@googlemail.com>
13 years agoBtrfs: fix deadlock on metadata reservation when evicting a inode
Miao Xie [Fri, 18 Nov 2011 09:43:00 +0000 (17:43 +0800)]
Btrfs: fix deadlock on metadata reservation when evicting a inode

When I ran the xfstests, I found the test tasks was blocked on meta-data
reservation.

By debugging, I found the reason of this bug:
   start transaction
        |
v
   reserve meta-data space
|
v
   flush delay allocation -> iput inode -> evict inode
^ |
| v
   wait for delay allocation flush <- reserve meta-data space

And besides that, the flush on evicting inode will block the thread, which
is reclaiming the memory, and make oom happen easily.

Fix this bug by skipping the flush step when evicting inode.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
13 years agoFix URL of btrfs-progs git repository in docs
Arnd Hannemann [Wed, 16 Nov 2011 16:35:37 +0000 (17:35 +0100)]
Fix URL of btrfs-progs git repository in docs

The location of the btrfs-progs repository has been changed.
This patch updates the documentation accordingly.

Signed-off-by: Arnd Hannemann <arnd@arndnet.de>
13 years agobtrfs scrub: handle -ENOMEM from init_ipath()
Dan Carpenter [Wed, 16 Nov 2011 08:28:01 +0000 (11:28 +0300)]
btrfs scrub: handle -ENOMEM from init_ipath()

init_ipath() can return an ERR_PTR(-ENOMEM).

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
13 years agoMerge branches 'cxgb4', 'ipoib', 'misc' and 'qib' into for-next
Roland Dreier [Wed, 30 Nov 2011 02:01:53 +0000 (18:01 -0800)]
Merge branches 'cxgb4', 'ipoib', 'misc' and 'qib' into for-next

13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Tue, 29 Nov 2011 22:43:22 +0000 (14:43 -0800)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/linux-pm

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: Update comments describing device power management callbacks
  PM / Sleep: Update documentation related to system wakeup
  PM / Runtime: Make documentation follow the new behavior of irq_safe
  PM / Sleep: Correct inaccurate information in devices.txt
  PM / Domains: Document how PM domains are used by the PM core
  PM / Hibernate: Do not leak memory in error/test code paths

13 years agoIB: Fix RCU lockdep splats
Eric Dumazet [Tue, 29 Nov 2011 21:31:23 +0000 (22:31 +0100)]
IB: Fix RCU lockdep splats

Commit f2c31e32b37 ("net: fix NULL dereferences in check_peer_redir()")
forgot to take care of infiniband uses of dst neighbours.

Many thanks to Marc Aurele who provided a nice bug report and feedback.

Reported-by: Marc Aurele La France <tsi@ualberta.ca>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
13 years agoIB/ipoib: Prevent hung task or softlockup processing multicast response
Mike Marciniszyn [Mon, 21 Nov 2011 13:43:54 +0000 (08:43 -0500)]
IB/ipoib: Prevent hung task or softlockup processing multicast response

This following can occur with ipoib when processing a multicast reponse:

    BUG: soft lockup - CPU#0 stuck for 67s! [ib_mad1:982]
    Modules linked in: ...
    CPU 0:
    Modules linked in: ...
    Pid: 982, comm: ib_mad1 Not tainted 2.6.32-131.0.15.el6.x86_64 #1 ProLiant DL160 G5
    RIP: 0010:[<ffffffff814ddb27>]  [<ffffffff814ddb27>] _spin_unlock_irqrestore+0x17/0x20
    RSP: 0018:ffff8802119ed860  EFLAGS: 00000246
    0000000000000004 RBX: ffff8802119ed860 RCX: 000000000000a299
    RDX: ffff88021086c700 RSI: 0000000000000246 RDI: 0000000000000246
    RBP: ffffffff8100bc8e R08: ffff880210ac229c R09: 0000000000000000
    R10: ffff88021278aab8 R11: 0000000000000000 R12: ffff8802119ed860
    R13: ffffffff8100be6e R14: 0000000000000001 R15: 0000000000000003
    FS:  0000000000000000(0000) GS:ffff880028200000(0000) knlGS:0000000000000000
    CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    CR2: 00000000006d4840 CR3: 0000000209aa5000 CR4: 00000000000406f0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Call Trace:
    [<ffffffffa032c247>] ? ipoib_mcast_send+0x157/0x480 [ib_ipoib]
    [<ffffffff8100bc8e>] ? apic_timer_interrupt+0xe/0x20
    [<ffffffff8100bc8e>] ? apic_timer_interrupt+0xe/0x20
    [<ffffffffa03283d4>] ? ipoib_path_lookup+0x124/0x2d0 [ib_ipoib]
    [<ffffffffa03286fc>] ? ipoib_start_xmit+0x17c/0x430 [ib_ipoib]
    [<ffffffff8141e758>] ? dev_hard_start_xmit+0x2c8/0x3f0
    [<ffffffff81439d0a>] ? sch_direct_xmit+0x15a/0x1c0
    [<ffffffff81423098>] ? dev_queue_xmit+0x388/0x4d0
    [<ffffffffa032d6b7>] ? ipoib_mcast_join_finish+0x2c7/0x510 [ib_ipoib]
    [<ffffffffa032dab8>] ? ipoib_mcast_sendonly_join_complete+0x1b8/0x1f0 [ib_ipoib]
    [<ffffffffa02a0946>] ? mcast_work_handler+0x1a6/0x710 [ib_sa]
    [<ffffffffa015f01e>] ? ib_send_mad+0xfe/0x3c0 [ib_mad]
    [<ffffffffa00f6c93>] ? ib_get_cached_lmc+0xa3/0xb0 [ib_core]
    [<ffffffffa02a0f9b>] ? join_handler+0xeb/0x200 [ib_sa]
    [<ffffffffa029e4fc>] ? ib_sa_mcmember_rec_callback+0x5c/0xa0 [ib_sa]
    [<ffffffffa029e79c>] ? recv_handler+0x3c/0x70 [ib_sa]
    [<ffffffffa01603a4>] ? ib_mad_completion_handler+0x844/0x9d0 [ib_mad]
    [<ffffffffa015fb60>] ? ib_mad_completion_handler+0x0/0x9d0 [ib_mad]
    [<ffffffff81088830>] ? worker_thread+0x170/0x2a0
    [<ffffffff8108e160>] ? autoremove_wake_function+0x0/0x40
    [<ffffffff810886c0>] ? worker_thread+0x0/0x2a0
    [<ffffffff8108ddf6>] ? kthread+0x96/0xa0
    [<ffffffff8100c1ca>] ? child_rip+0xa/0x20

Coinciding with stack trace is the following message:

    ib0: ib_address_create failed

The code below in ipoib_mcast_join_finish() will note the above
failure in the address handle but otherwise continue:

                ah = ipoib_create_ah(dev, priv->pd, &av);
                if (!ah) {
                        ipoib_warn(priv, "ib_address_create failed\n");
                } else {

The while loop at the bottom of ipoib_mcast_join_finish() will attempt
to send queued multicast packets in mcast->pkt_queue and eventually
end up in ipoib_mcast_send():

        if (!mcast->ah) {
                if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE)
                        skb_queue_tail(&mcast->pkt_queue, skb);
                else {
                        ++dev->stats.tx_dropped;
                        dev_kfree_skb_any(skb);
                }

My read is that the code will requeue the packet and return to the
ipoib_mcast_join_finish() while loop and the stage is set for the
"hung" task diagnostic as the while loop never sees a non-NULL ah, and
will do nothing to resolve.

There are GFP_ATOMIC allocates in the provider routines, so this is
possible and should be dealt with.

The test that induced the failure is associated with a host SM on the
same server during a shutdown.

This patch causes ipoib_mcast_join_finish() to exit with an error
which will flush the queued mcast packets.  Nothing is done to unwind
the QP attached state so that subsequent sends from above will retry
the join.

Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Reviewed-by: Gary Leshner <gary.leshner@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
13 years agoMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
Linus Torvalds [Tue, 29 Nov 2011 19:13:22 +0000 (11:13 -0800)]
Merge branch 'slab/urgent' of git://git./linux/kernel/git/penberg/linux

* 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux:
  slub: avoid potential NULL dereference or corruption
  slub: use irqsafe_cpu_cmpxchg for put_cpu_partial
  slub: move discard_slab out of node lock
  slub: use correct parameter to add a page to partial list tail

13 years agoMerge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Tue, 29 Nov 2011 16:59:12 +0000 (08:59 -0800)]
Merge branch 'dev' of git://git./linux/kernel/git/tytso/ext4

* 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix racy use-after-free in ext4_end_io_dio()

13 years agoMerge branch 'defconfigs-for-arnd' of git://git.linaro.org/people/triad/linux-sterics...
Arnd Bergmann [Tue, 29 Nov 2011 14:50:17 +0000 (14:50 +0000)]
Merge branch 'defconfigs-for-arnd' of git://git.linaro.org/people/triad/linux-stericsson into fixes

13 years agoof: Add Silicon Image vendor prefix
Pawel Moll [Tue, 8 Nov 2011 11:35:20 +0000 (11:35 +0000)]
of: Add Silicon Image vendor prefix

"sil" is the most commonly used abbreviation for Silicon
Image products.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
13 years agoof/irq: of_irq_init: add check for parent equal to child node
Rob Herring [Mon, 28 Nov 2011 02:16:33 +0000 (20:16 -0600)]
of/irq: of_irq_init: add check for parent equal to child node

With the revert of "of/irq: of_irq_find_parent: check for parent equal to
child" (dc9372808412edb), we need another way to handle parent node equal
to the child node. This can simply be handled in of_irq_init by checking
for this condition.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Tested-by: Pawel Moll <pawel.moll@arm.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
13 years agoARM: ux500: update defconfig
Linus Walleij [Wed, 16 Nov 2011 19:30:35 +0000 (20:30 +0100)]
ARM: ux500: update defconfig

This updates the Ux500 defconfig with the new drivers for HWSEM
and AB5500 core that were merged in the 3.2 cycle.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
13 years agoARM: u300: update defconfig
Linus Walleij [Wed, 16 Nov 2011 19:44:13 +0000 (20:44 +0100)]
ARM: u300: update defconfig

This updates the U300 defconfig to support some new drivers like
FSMC, sets it to use the MMC clock gating scheme, and removes
some stale config options.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Tue, 29 Nov 2011 03:28:32 +0000 (19:28 -0800)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: convert drivers/hwmon/* to use module_platform_driver()
  hwmon: Remove redundant spi driver bus initialization

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Linus Torvalds [Tue, 29 Nov 2011 00:37:35 +0000 (16:37 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/aegl/linux

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  efivars: add missing parameter to efi_pstore_read()

13 years agoefivars: add missing parameter to efi_pstore_read()
Christoph Fritz [Mon, 28 Nov 2011 22:49:33 +0000 (23:49 +0100)]
efivars: add missing parameter to efi_pstore_read()

In the case where CONFIG_PSTORE=n, the function efi_pstore_read() doesn't
have the correct list of parameters. This patch provides a definition
of efi_pstore_read() with 'char **buf' added to fix this warning:
"drivers/firmware/efivars.c:609: warning: initialization from".

problem introduced in commit f6f8285132907757ef84ef8dae0a1244b8cde6ac

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
13 years agoMerge branch 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Mon, 28 Nov 2011 21:55:59 +0000 (13:55 -0800)]
Merge branch 'for-3.2-fixes' of git://git./linux/kernel/git/tj/cgroup

* 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup_freezer: fix freezing groups with stopped tasks

13 years agoMerge branch 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Mon, 28 Nov 2011 21:49:43 +0000 (13:49 -0800)]
Merge branch 'for-3.2-fixes' of git://git./linux/kernel/git/tj/percpu

* 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: explain why per_cpu_ptr_to_phys() is more complicated than necessary
  percpu: fix chunk range calculation
  percpu: rename pcpu_mem_alloc to pcpu_mem_zalloc

13 years agoPM: Update comments describing device power management callbacks
Rafael J. Wysocki [Wed, 23 Nov 2011 20:20:32 +0000 (21:20 +0100)]
PM: Update comments describing device power management callbacks

The comments describing device power management callbacks in
include/pm.h are outdated and somewhat confusing, so make them
reflect the reality more accurately.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
13 years agoPM / Sleep: Update documentation related to system wakeup
Rafael J. Wysocki [Wed, 23 Nov 2011 20:20:15 +0000 (21:20 +0100)]
PM / Sleep: Update documentation related to system wakeup

The system wakeup section of Documentation/power/devices.txt is
outdated, so make it agree with the current code.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
13 years agoPM / Runtime: Make documentation follow the new behavior of irq_safe
Rafael J. Wysocki [Wed, 23 Nov 2011 20:20:07 +0000 (21:20 +0100)]
PM / Runtime: Make documentation follow the new behavior of irq_safe

The runtime PM core code behavior related to the power.irq_safe
device flag has changed recently and the documentation should be
modified to reflect it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
13 years agoPM / Sleep: Correct inaccurate information in devices.txt
Rafael J. Wysocki [Wed, 23 Nov 2011 20:19:57 +0000 (21:19 +0100)]
PM / Sleep: Correct inaccurate information in devices.txt

The documentation file Documentation/power/devices.txt contains some
information that isn't correct any more due to code modifications
made after that file had been created (or updated last time).  Fix
this.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>