pandora-kernel.git
12 years agopowerpc/pseries: Move hvsi support into a library
Benjamin Herrenschmidt [Fri, 29 Apr 2011 06:44:24 +0000 (16:44 +1000)]
powerpc/pseries: Move hvsi support into a library

This will allow a different backend to share it

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/pseries: Re-implement HVSI as part of hvc_vio
Benjamin Herrenschmidt [Thu, 12 May 2011 03:46:38 +0000 (13:46 +1000)]
powerpc/pseries: Re-implement HVSI as part of hvc_vio

On pseries machines, consoles are provided by the hypervisor using
a low level get_chars/put_chars type interface. However, this is
really just a transport to the service processor which implements
them either as "raw" console (networked consoles, HMC, ...) or as
"hvsi" serial ports.

The later is a simple packet protocol on top of the raw character
interface that is supposed to convey additional "serial port" style
semantics. In practice however, all it does is provide a way to
read the CD line and set/clear our DTR line, that's it.

We currently implement the "raw" protocol as an hvc console backend
(/dev/hvcN) and the "hvsi" protocol using a separate tty driver
(/dev/hvsi0).

However this is quite impractical. The arbitrary difference between
the two type of devices has been a major source of user (and distro)
confusion. Additionally, there's an additional mini -hvsi implementation
in the pseries platform code for our low level debug console and early
boot kernel messages, which means code duplication, though that low
level variant is impractical as it's incapable of doing the initial
protocol negociation to establish the link to the FSP.

This essentially replaces the dedicated hvsi driver and the platform
udbg code completely by extending the existing hvc_vio backend used
in "raw" mode so that:

 - It now supports HVSI as well
 - We add support for hvc backend providing tiocm{get,set}
 - It also provides a udbg interface for early debug and boot console

This is overall less code, though this will only be obvious once we
remove the old "hvsi" driver, which is still available for now. When
the old driver is enabled, the new code still kicks in for the low
level udbg console, replacing the old mini implementation in the platform
code, it just doesn't provide the higher level "hvc" interface.

In addition to producing generally simler code, this has several benefits
over our current situation:

 - The user/distro only has to deal with /dev/hvcN for the hypervisor
console, avoiding all sort of confusion that has plagued us in the past

 - The tty, kernel and low level debug console all use the same code
base which supports the full protocol establishment process, thus the
console is now available much earlier than it used to be with the
old HVSI driver. The kernel console works much earlier and udbg is
available much earlier too. Hackers can enable a hard coded very-early
debug console as well that works with HVSI (previously that was only
supported for the "raw" mode).

I've tried to keep the same semantics as hvsi relative to how I react
to things like CD changes, with some subtle differences though:

 - I clear DTR on close if HUPCL is set

 - Current hvsi triggers a hangup if it detects a up->down transition
   on CD (you can still open a console with CD down). My new implementation
   triggers a hangup if the link to the FSP is severed, and severs it upon
   detecting a up->down transition on CD.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/udbg: Register udbg console generically
Benjamin Herrenschmidt [Thu, 16 Jun 2011 15:08:37 +0000 (15:08 +0000)]
powerpc/udbg: Register udbg console generically

When CONFIG_PPC_EARLY_DEBUG is set, call register_early_udbg_console()
early from generic code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/pseries: Factor HVSI header struct in packet definitions
Benjamin Herrenschmidt [Thu, 16 Jun 2011 15:08:24 +0000 (15:08 +0000)]
powerpc/pseries: Factor HVSI header struct in packet definitions

Embed the struct hvsi_header in the various packet definitions
rather than open coding it multiple times. Will help provide
stronger type checking.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/hvsi: Move HVSI protocol definitions to a header file
Benjamin Herrenschmidt [Thu, 16 Jun 2011 15:08:12 +0000 (15:08 +0000)]
powerpc/hvsi: Move HVSI protocol definitions to a header file

This moves various HVSI protocol definitions from the hvsi.c
driver to a header file that can be used later on by a udbg
implementation

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/maple: Register CPC925 EDAC device on all boards with CPC925
Dmitry Eremin-Solenikov [Fri, 17 Jun 2011 02:51:46 +0000 (02:51 +0000)]
powerpc/maple: Register CPC925 EDAC device on all boards with CPC925

Currently Maple setup code creates cpc925_edac device only on
Motorola ATCA-6101 blade. Make setup code check bridge revision
and enable EDAC on all U3H bridges.

Verified on Momentum MapleD (ppc970fx kit) board.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/pseries: Improve error code on reconfiguration notifier failure
Akinobu Mita [Tue, 21 Jun 2011 03:35:56 +0000 (03:35 +0000)]
powerpc/pseries: Improve error code on reconfiguration notifier failure

Reconfiguration notifier call for device node may fail by several reasons,
but it always assumes kmalloc failures.

This enables reconfiguration notifier call chain to get the actual error
code rather than -ENOMEM by converting all reconfiguration notifier calls
to return encapsulate error code with notifier_from_errno().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/pseries: Introduce pSeries_reconfig_notify()
Akinobu Mita [Tue, 21 Jun 2011 03:35:55 +0000 (03:35 +0000)]
powerpc/pseries: Introduce pSeries_reconfig_notify()

This introduces pSeries_reconfig_notify() as a just wrapper of
blocking_notifier_call_chain() for pSeries_reconfig_chain.

This is a preparation to improvement of error code on reconfiguration
notifier failure.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/maple: Enable scom access functions on Maple
Dmitry Eremin-Solenikov [Fri, 17 Jun 2011 03:10:06 +0000 (03:10 +0000)]
powerpc/maple: Enable scom access functions on Maple

Enable functions used to access SCOM if PPC_MAPLE is defined: they are
used by cpufreq driver to control hardware.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: mem_init should call memblock_is_reserved with phys_addr_t
Becky Bruce [Tue, 28 Jun 2011 09:54:46 +0000 (09:54 +0000)]
powerpc: mem_init should call memblock_is_reserved with phys_addr_t

This has been broken for a while but hasn't been an issue until
now because nobody was reserving regions at high addresses.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Whitespace fix to include/asm/pgtable-ppc64.h
Becky Bruce [Tue, 28 Jun 2011 09:06:54 +0000 (09:06 +0000)]
powerpc: Whitespace fix to include/asm/pgtable-ppc64.h

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/book3e-64: use a separate TLB handler when linear map is bolted
Scott Wood [Wed, 22 Jun 2011 11:25:42 +0000 (11:25 +0000)]
powerpc/book3e-64: use a separate TLB handler when linear map is bolted

On MMUs such as FSL where we can guarantee the entire linear mapping is
bolted, we don't need to worry about linear TLB misses.  If on top of
that we do a full table walk, we get rid of all recursive TLB faults, and
can dispense with some state saving.  This gains a few percent on
TLB-miss-heavy workloads, and around 50% on a benchmark that had a high
rate of virtual page table faults under the normal handler.

While touching the EX_TLB layout, remove EX_TLB_MMUCR0, EX_TLB_SRR0, and
EX_TLB_SRR1 as they're not used.

[BenH: Fixed build with 64K pages (wsp config)]

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/book3e-64: Reraise doorbell when masked by soft-irq-disable
Scott Wood [Wed, 22 Jun 2011 11:19:49 +0000 (11:19 +0000)]
powerpc/book3e-64: Reraise doorbell when masked by soft-irq-disable

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agoMerge remote branch 'jwb/next' into next
Benjamin Herrenschmidt [Wed, 29 Jun 2011 02:45:43 +0000 (12:45 +1000)]
Merge remote branch 'jwb/next' into next

12 years agopowerpc/4xx: Update Canyonlands and Glacier boards DTS to add HW RNG support
Mike Williams [Wed, 22 Jun 2011 06:09:43 +0000 (06:09 +0000)]
powerpc/4xx: Update Canyonlands and Glacier boards DTS to add HW RNG support

This will allow the new HW RNG driver to bind on these boards

Signed-off-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
12 years agoppc4xx: Add crypto and RNG entries to Sequoia DTS
Josh Boyer [Tue, 21 Jun 2011 12:20:07 +0000 (08:20 -0400)]
ppc4xx: Add crypto and RNG entries to Sequoia DTS

The Sequoia board has a Security function IP block on it that contains a TRNG.
Add the crypto and rng portions of that IP block to the DTS.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
12 years agopowerpc/85xx: disable timebase synchronization under the hypervisor
Timur Tabi [Tue, 14 Jun 2011 13:04:33 +0000 (13:04 +0000)]
powerpc/85xx: disable timebase synchronization under the hypervisor

The Freescale hypervisor does not allow guests to write to the timebase
registers (virtualizing the timebase register was deemed too complicated),
so don't try to synchronize the timebase registers when we're running
under the hypervisor.

This typically happens when kexec support is enabled.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add P1010RDB board support
Prabhakar Kushwaha [Thu, 2 Jun 2011 20:28:08 +0000 (20:28 +0000)]
powerpc/85xx: Add P1010RDB board support

P1010RDB Overview
 -----------------
 1Gbyte DDR3 (on board DDR)
 32Mbyte 16bit NOR flash
 32Mbyte SLC NAND Flash
 256 Kbit M24256 I2C EEPROM
 128 Mbit SPI Flash memory
 I2C Board 128x8 bit memory
 SD/MMC connector to interface with the SD memory card
 2 SATA interface
         1 internal SATA connect to 2.5. 160G SATA2 HDD
         1 eSATA connector to rear panel
 USB 2.0
         x1 USB 2.0 port: connected via a UTMI PHY to Mini-AB interface.
         x1 USB 2.0 port: directly connected to Mini-AB interface Ethernet
 eTSEC1: Connected to RGMII PHY VSC8641XKO
 eTSEC2: Connected to SGMII PHY VSC8221
 eTSEC3: Connected to SGMII PHY VSC8221 eCAN
 Two DB-9 female connectors for Field bus interface UART
 DUART interface: supports two UARTs up to 115200 bps for console display

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/86xx: enable the framebuffer console on the MPC8610 HPCD
Timur Tabi [Thu, 23 Jun 2011 16:16:47 +0000 (11:16 -0500)]
powerpc/86xx: enable the framebuffer console on the MPC8610 HPCD

Enable framebuffer console support by default in the defconfig on the
Freescale MPC8610 HPCD reference board.  This allows the boot messages to
be shown on the video display.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/86xx: improve calculation of DIU pixel clock on the MPC8610 HPCD
Timur Tabi [Thu, 23 Jun 2011 06:16:48 +0000 (06:16 +0000)]
powerpc/86xx: improve calculation of DIU pixel clock on the MPC8610 HPCD

mpc8610hpcd_set_pixel_clock() calculates the correct value of the PXCLK
bits in the CLKDVDR register for a given pixel clock rate.  The code which
performs this calculation is overly complicated and includes an error
estimation routine that doesn't work most of the time anyway.  Replace the
code with the simpler routine that's currently used on the P1022DS.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: enable the framebuffer console for the defconfigs
Timur Tabi [Thu, 23 Jun 2011 19:48:55 +0000 (14:48 -0500)]
powerpc/85xx: enable the framebuffer console for the defconfigs

Enable framebuffer console support by default in the defconfigs for the
Freescale 85xx-based reference board.  This allows the boot messages to
be shown on the video display on the P1022DS.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: clamp the P1022DS DIU pixel clock to allowed values
Timur Tabi [Thu, 23 Jun 2011 19:48:54 +0000 (14:48 -0500)]
powerpc/85xx: clamp the P1022DS DIU pixel clock to allowed values

To ensure that the DIU pixel clock will not be set to an invalid value,
clamp the PXCLK divider to the allowed range (2-255).  This also acts as
a limiter for the pixel clock.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/e500mc: Add support for the wait instruction in e500_idle
Scott Wood [Wed, 22 Jun 2011 23:10:30 +0000 (18:10 -0500)]
powerpc/e500mc: Add support for the wait instruction in e500_idle

e500mc cannot doze or nap due to an erratum (as well as having a
different mechanism than previous e500), but it has a "wait" instruction
that is similar to doze.

On 64-bit, due to the soft-irq-disable mechanism, the existing
book3e_idle should be used instead.

Signed-off-by: Vakul Garg <vakul@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add P4080 SoC device tree include stub
Kumar Gala [Wed, 22 Jun 2011 10:17:45 +0000 (05:17 -0500)]
powerpc/85xx: Add P4080 SoC device tree include stub

Split out common (non-board specific) parts of the SoC related device
tree into a stub so multiple board dts files can include it and we can
reduce duplication and maintenance effort.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agoMAINTAINERS: add arch/powerpc/platforms/85xx/ to the 85xx entry
Baruch Siach [Mon, 20 Jun 2011 05:00:22 +0000 (08:00 +0300)]
MAINTAINERS: add arch/powerpc/platforms/85xx/ to the 85xx entry

Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/p1022ds: add missing iounmap calls to platform file
Timur Tabi [Wed, 8 Jun 2011 20:01:57 +0000 (15:01 -0500)]
powerpc/p1022ds: add missing iounmap calls to platform file

The platform file for the Freecale P1022DS reference board is not freeing
the ioremap() mapping of the PIXIS and global utilities nodes it creates.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: specify interrupt for pq3-localbus devices
Dmitry Eremin-Solenikov [Wed, 1 Jun 2011 15:15:18 +0000 (19:15 +0400)]
powerpc/85xx: specify interrupt for pq3-localbus devices

fsl-lbc driver requires an interrupt to bind to localbus device.
Populate 85xx boards' dts trees with lbc interrupt info.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: tqm8540 - add description for onboard flash
Dmitry Eremin-Solenikov [Tue, 14 Jun 2011 05:22:27 +0000 (09:22 +0400)]
powerpc/85xx: tqm8540 - add description for onboard flash

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Update device tree to add nand info for p3041ds
Lei Xu [Mon, 23 May 2011 10:49:00 +0000 (18:49 +0800)]
powerpc/85xx: Update device tree to add nand info for p3041ds

Signed-off-by: Lei Xu <B33228@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Update device tree to add nand info for p5020ds
Lei Xu [Mon, 23 May 2011 10:48:58 +0000 (18:48 +0800)]
powerpc/85xx: Update device tree to add nand info for p5020ds

Signed-off-by: Lei Xu <B33228@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add host-pci(e) bridge only for RC
Prabhakar Kushwaha [Mon, 23 May 2011 10:23:25 +0000 (15:53 +0530)]
powerpc/85xx: Add host-pci(e) bridge only for RC

FSL PCIe controller can act as agent(EP) or host(RC).  Under Agent(EP) mode
the controller will be configured by the host system.  So its not required
to be registered with the PCI(e) sub-system. We only register the
controller if its configured in host(RC) mode.

Signed-off-by: Vivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: add board support for the Freescale hypervisor
Timur Tabi [Thu, 19 May 2011 13:54:30 +0000 (08:54 -0500)]
powerpc/85xx: add board support for the Freescale hypervisor

Add support for the ePAPR-compliant Freescale hypervisor (aka "Topaz") on
the Freescale P3041DS, P4080DS, and P5020DS reference boards.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: add Freescale hypervisor partition control functions
Timur Tabi [Thu, 19 May 2011 13:54:29 +0000 (08:54 -0500)]
powerpc: add Freescale hypervisor partition control functions

Add functions to restart and halt the current partition when running under
the Freescale hypervisor.  These functions should be assigned to various
function pointers of the ppc_md structure during the .probe() function for
the board:

ppc_md.restart = fsl_hv_restart;
ppc_md.power_off = fsl_hv_halt;
ppc_md.halt = fsl_hv_halt;

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: introduce the ePAPR embedded hypervisor vmpic driver
Ashish Kalra [Thu, 19 May 2011 13:54:28 +0000 (08:54 -0500)]
powerpc: introduce the ePAPR embedded hypervisor vmpic driver

The Freescale ePAPR reference hypervisor provides interrupt controller
services via a hypercall interface, instead of emulating the MPIC
controller.  This is called the VMPIC.

The ePAPR "virtual interrupt controller" provides interrupt controller
services for external interrupts.  External interrupts received by a
partition can come from two sources:

  - Hardware interrupts - hardware interrupts come from external
    interrupt lines or on-chip I/O devices.
  - Virtual interrupts - virtual interrupts are generated by the hypervisor
    as part of some hypervisor service or hypervisor-created virtual device.

Both types of interrupts are processed using the same programming model and
same set of hypercalls.

Signed-off-by: Ashish Kalra <ashish.kalra@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: introduce ePAPR embedded hypervisor hcall interface
Timur Tabi [Thu, 19 May 2011 13:54:27 +0000 (08:54 -0500)]
powerpc: introduce ePAPR embedded hypervisor hcall interface

ePAPR hypervisors provide operating system services via a "hypercall"
interface.  The following steps need to be performed to make an hcall:

1. Load r11 with the hcall number
2. Load specific other registers with parameters
3. Issue instrucion "sc 1"
4. The return code is in r3
5. Other returned parameters are in other registers.

To provide this service to the kernel, these steps are wrapped in inline
assembly functions.  Standard ePAPR hcalls are in epapr_hcalls.h, and
Freescale extensions are in fsl_hcalls.h.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: make irq_choose_cpu() available to all PIC drivers
Stuart Yoder [Thu, 19 May 2011 13:54:26 +0000 (08:54 -0500)]
powerpc: make irq_choose_cpu() available to all PIC drivers

Move irq_choose_cpu() into arch/powerpc/kernel/irq.c so that it can be used
by other PIC drivers.  The function is not MPIC-specific.

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/qe: Limit QE support to ppc32
Kumar Gala [Fri, 20 May 2011 05:00:21 +0000 (00:00 -0500)]
powerpc/qe: Limit QE support to ppc32

Only 32-bit SoCs have a QUICC Engine so limit the config option to PPC32.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add PCI support in 64-bit mode on P5020DS
Kumar Gala [Fri, 20 May 2011 02:59:23 +0000 (21:59 -0500)]
powerpc/85xx: Add PCI support in 64-bit mode on P5020DS

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/pci: Move FSL fixup from 32-bit to common
Kumar Gala [Fri, 20 May 2011 03:26:18 +0000 (22:26 -0500)]
powerpc/pci: Move FSL fixup from 32-bit to common

We need the FSL specific header fixup code on both 32-bit and 64-bit
platforms so just move the code into pci-common.c.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add basic P1023RDS board support
Roy Zang [Fri, 20 May 2011 01:20:13 +0000 (20:20 -0500)]
powerpc/85xx: Add basic P1023RDS board support

The P1023 processor is an e500v2 based SoC that utilizes the DPAA
networking architecture.  This adds basic board support for non-DPAA
functionality (device tree, board file, etc).

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Save scratch registers to thread info instead of using SPRGs.
Ashish Kalra [Fri, 22 Apr 2011 21:48:27 +0000 (16:48 -0500)]
powerpc/85xx: Save scratch registers to thread info instead of using SPRGs.

We expect this is actually faster, and we end up needing more space than we
can get from the SPRGs in some instances.  This is also useful when running
as a guest OS - SPRGs4-7 do not have guest versions.

8 slots are allocated in thread_info for this even though we only actually
use 4 of them - this allows space for future code to have more scratch
space (and we know we'll need it for things like hugetlb).

Signed-off-by: Ashish Kalra <Ashish.Kalra@freescale.com>
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Set up doorbells even with no mpic
Scott Wood [Thu, 26 Aug 2010 07:49:07 +0000 (02:49 -0500)]
powerpc/85xx: Set up doorbells even with no mpic

In cases like when the platform is used under hypervisor we will NOT
have an MPIC controller but still want doorbells setup.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/fsl_pci: Simplify matching logic for PCI_FIXUP_HEADER
Kumar Gala [Fri, 20 May 2011 00:56:50 +0000 (19:56 -0500)]
powerpc/fsl_pci: Simplify matching logic for PCI_FIXUP_HEADER

We fixup every FSL PCIe Root Complex we need to fixup a few things.
Rather than adding every device under the sun we move to just matching
only on the vendor (PCI_VENDOR_ID_FREESCALE) and than check that we are
a PCIe controller in host mode in the fixup.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Cleanup PCIe support on corenet_ds boards
Kumar Gala [Mon, 9 May 2011 20:08:57 +0000 (15:08 -0500)]
powerpc/85xx: Cleanup PCIe support on corenet_ds boards

Several changes on PCIe support on P3041DS/P4080DS/P5020DS boards:
* Add support for "fsl,qoriq-pcie-v2.2" needed by P3041 & P5020
* Removed support for setting primary_phb_addr as we have no ISA need
* Add PCI controller to of_platform_bus_probe (for EDAC)
* Cleanup building w/SWIOTLB off on P4080DS (not stricly PCIe related)

Signed-off-by: Kai.Jiang <Kai.Jiang@freescale.com>
Signed-off-by: Laurentiu TUDOR <Laurentiu.Tudor@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Updates to P4080DS device tree
Kumar Gala [Mon, 9 May 2011 19:13:13 +0000 (14:13 -0500)]
powerpc/85xx: Updates to P4080DS device tree

* Added BSD dual-license
* Moved mpic-parent to root so we dont need to duplicate everywhere
* Added next level cache from L2 to CPC
* Moved to 4-cell MPIC interrupt properties
* Added 3 MSI banks
* Added numerous missing nodes: soc-sram-error, guts, pins, clockgen,
  rcpm, sfp, serdes, etc.
* Reworked PCIe interrupts to be at virtual bridge level

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add P3041DS device tree
Kumar Gala [Mon, 9 May 2011 20:37:31 +0000 (15:37 -0500)]
powerpc/85xx: Add P3041DS device tree

Add basic device tree for P3041DS board.  This device tree excludes
support for DPAA and RapidIO nodes.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/85xx: Add P5020DS device tree
Kumar Gala [Mon, 9 May 2011 20:24:57 +0000 (15:24 -0500)]
powerpc/85xx: Add P5020DS device tree

Add basic device tree for P5020DS board.  This device tree excludes
support for DPAA and RapidIO nodes.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: Add a defconfig for 'corenet' 32-bit platforms
Kumar Gala [Thu, 19 May 2011 18:22:25 +0000 (13:22 -0500)]
powerpc: Add a defconfig for 'corenet' 32-bit platforms

The e500mc and e5500 based cores are only available on corenet based
SoCs.  We use this name for the P204x, P3040, P4040, P4080, P50x0 SoCs
and any future processors in these families.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: Rename e55xx_smp_defconfig to corenet64_smp_defconfig
Kumar Gala [Thu, 19 May 2011 18:19:52 +0000 (13:19 -0500)]
powerpc: Rename e55xx_smp_defconfig to corenet64_smp_defconfig

Rather than trying to use the core name we use corenet to distinquish
the platform/core combo.  corenet64 will be a 64-bit kernel build and
we'll add a new defconfig for corenet32 for a 32-bit platforms.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: Fix doorbell type shift
Michael Neuling [Sun, 5 Jun 2011 16:48:47 +0000 (16:48 +0000)]
powerpc: Fix doorbell type shift

doorbell type is defined as bits 32:36 so should be shifted by 63-36 =
27 rather than 28.

We never noticed this bug as we've only every used type PPC_DBELL = 0.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agoDocument powerpc udbg-immortal
Christian Kujau [Tue, 31 May 2011 15:22:05 +0000 (15:22 +0000)]
Document powerpc udbg-immortal

Back in 2006 the "udbg-immortal" kernel option has been introduced:

  > commit 3b5e905ee3bd23e9311951890aba57a0dbc81ca4
  > Author: Benjamin Herrenschmidt <benh@au1.ibm.com>
  > Date:   Wed Jun 7 12:06:20 2006 +1000
  >
  >  [PATCH] powerpc: Add udbg-immortal kernel option

...but I could not find it documented anywhere in the sources.
This patch adds it to Documentation/kernel-parameters.txt.

Signed-off-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/mpic: Support compiling with DEBUG enabled
Dmitry Eremin-Solenikov [Mon, 30 May 2011 01:56:09 +0000 (01:56 +0000)]
powerpc/mpic: Support compiling with DEBUG enabled

Support compilation of mpic.c with DEBUG defined, as now we have irq_desc and
not irq number.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Avoid extra indirect function call in sending IPIs
Paul Mackerras [Wed, 25 May 2011 23:34:12 +0000 (23:34 +0000)]
powerpc: Avoid extra indirect function call in sending IPIs

On many platforms (including pSeries), smp_ops->message_pass is always
smp_muxed_ipi_message_pass.  This changes arch/powerpc/kernel/smp.c so
that if smp_ops->message_pass is NULL, it calls smp_muxed_ipi_message_pass
directly.

This means that a platform doesn't need to set both .message_pass and
.cause_ipi, only one of them.  It is a slight performance improvement
in that it gets rid of an indirect function call at the expense of a
predictable conditional branch.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix early boot accounting of CPUs
Matt Evans [Wed, 25 May 2011 18:09:12 +0000 (18:09 +0000)]
powerpc: Fix early boot accounting of CPUs

smp_release_cpus() waits for all cpus (including the bootcpu) due to an
off-by-one count on boot_cpu_count (which is all CPUs).  This patch replaces
that with spinning_secondaries (which is all secondary CPUs).

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/book3e: Clarify HW table walk enable/disable message
Kumar Gala [Thu, 19 May 2011 20:09:28 +0000 (20:09 +0000)]
powerpc/book3e: Clarify HW table walk enable/disable message

Before if we didn't support or enable HW table walk we'd get a messaage
like:

MMU: Book3E Page Tables Disabled

Which is a bit misleading.  Now it will say:

MMU: Book3E HW tablewalk not supported

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Wed, 8 Jun 2011 22:58:51 +0000 (15:58 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Runtime: Fix loops in pm_runtime_clk_notify()
  PM / Intel IOMMU: Fix init_iommu_pm_ops() for CONFIG_PM unset

12 years agovfs: reorganize 'struct inode' layout a bit
Linus Torvalds [Wed, 8 Jun 2011 22:18:19 +0000 (15:18 -0700)]
vfs: reorganize 'struct inode' layout a bit

This tries to make the 'struct inode' accesses denser in the data cache
by moving a commonly accessed field (i_security) closer to other fields
that are accessed often.

It also makes 'i_state' just an 'unsigned int' rather than 'unsigned
long', since we only use a few bits of that field, and moves it next to
the existing 'i_flags' so that we potentially get better structure
layout (although depending on config options, i_flags may already have
packed in the same word as i_lock, so this improves packing only for the
case of spinlock debugging)

Out 'struct inode' is still way too big, and we should probably move
some other fields around too (the acl fields in particular) for better
data cache access density.  Other fields (like the inode hash) are
likely to be entirely irrelevant under most loads.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoselinux: simplify and clean up inode_has_perm()
Linus Torvalds [Wed, 8 Jun 2011 22:11:56 +0000 (15:11 -0700)]
selinux: simplify and clean up inode_has_perm()

This is a rather hot function that is called with a potentially NULL
"struct common_audit_data" pointer argument.  And in that case it has to
provide and initialize its own dummy common_audit_data structure.

However, all the _common_ cases already pass it a real audit-data
structure, so that uncommon NULL case not only creates a silly run-time
test, more importantly it causes that function to have a big stack frame
for the dummy variable that isn't even used in the common case!

So get rid of that stupid run-time behavior, and make the (few)
functions that currently call with a NULL pointer just call a new helper
function instead (naturally called inode_has_perm_noapd(), since it has
no adp argument).

This makes the run-time test be a static code generation issue instead,
and allows for a much denser stack since none of the common callers need
the dummy structure.  And a denser stack not only means less stack space
usage, it means better cache behavior.  So we have a win-win-win from
this simplification: less code executed, smaller stack footprint, and
better cache behavior.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Wed, 8 Jun 2011 21:27:48 +0000 (14:27 -0700)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (28 commits)
  MAINTAINERS: add a maintainer to Gadget Framework
  USB: serial: add another 4N-GALAXY.DE PID to ftdi_sio driver
  Revert "USB: option: add ID for ZTE MF 330"
  drivers/usb/host/ohci-pxa27x.c: add missing clk_put
  USB: CONFIG_USB_GADGET_DUALSPEED is not user-configurable
  USB: dummy-hcd needs the has_tt flag
  usb-storage: redo incorrect reads
  usb/renesas_usbhs: free uep on removal
  usb/s3c-hsudc: fix error path
  usb/pxa25x_udc: cleanup the LUBBOCK err path
  usb/mv_udc_core: fix compile
  usb: gadget: include <linux/prefetch.h> to fix compiling error
  USB: s3c-hsotg: Tone down debugging
  usb: remove bad dput after dentry_unhash
  USB: core: Tolerate protocol stall during hub and port status read
  musb: fix prefetch build failure
  USB: cdc-acm: Adding second ACM channel support for Nokia E7 and C7
  usb-gadget: unlock data->lock mutex on error path in ep_write()
  USB: option Add blacklist for ZTE K3765-Z (19d2:2002)
  option: add Prolink PH300 modem IDs
  ...

12 years agoMAINTAINERS: add a maintainer to Gadget Framework
Felipe Balbi [Wed, 8 Jun 2011 16:16:28 +0000 (19:16 +0300)]
MAINTAINERS: add a maintainer to Gadget Framework

I'll be continuing the amazing work Dave has
done with the Gadget Framework.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
12 years agoMerge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Wed, 8 Jun 2011 20:54:46 +0000 (13:54 -0700)]
Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6

* 'spi/merge' of git://git.secretlab.ca/git/linux-2.6:
  spi/rtc-m41t93: Use spi_get_drvdata() for SPI devices
  spi/omap2: fix uninitialized variable

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Wed, 8 Jun 2011 20:54:29 +0000 (13:54 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: trivial: add space in fsc error message
  cifs: silence printk when establishing first session on socket
  CIFS ACL support needs CONFIG_KEYS, so depend on it
  possible memory corruption in cifs_parse_mount_options()
  cifs: make CIFS depend on CRYPTO_ECB
  cifs: fix the kernel release version in the default security warning message

12 years agoMerge 3.0-rc2 + Linus's latest into usb-linus
Greg Kroah-Hartman [Wed, 8 Jun 2011 20:50:00 +0000 (13:50 -0700)]
Merge 3.0-rc2 + Linus's latest into usb-linus

This is needed to get the following MAINTAINERS patch to apply properly.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
12 years agoUSB: serial: add another 4N-GALAXY.DE PID to ftdi_sio driver
Steffen Sledz [Tue, 7 Jun 2011 12:01:56 +0000 (14:01 +0200)]
USB: serial: add another 4N-GALAXY.DE PID to ftdi_sio driver

E.g. newer CAN 2.0 A/B <=> USB 2.0 converters report idProduct=f3c2.

Signed-off-by: Steffen Sledz <sledz@dresearch-fe.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
12 years agospi/rtc-m41t93: Use spi_get_drvdata() for SPI devices
Geert Uytterhoeven [Wed, 8 Jun 2011 19:48:03 +0000 (21:48 +0200)]
spi/rtc-m41t93: Use spi_get_drvdata() for SPI devices

One new offender detected by the recently increased type checking in
platform_get_drvdata():

drivers/rtc/rtc-m41t93.c: In function ‘m41t93_remove’:
drivers/rtc/rtc-m41t93.c:192: warning: passing argument 1 of ‘platform_get_drvdata’ from incompatible pointer type

Use spi_get_drvdata() instead of platform_get_drvdata(), cfr. commit
42fea15d6dc410e62dac6a764142045280624a5b ("spi/rtc-{ds1390,ds3234,m41t94}:
Use spi_get_drvdata() for SPI devices")

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
12 years agoMerge branch 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 8 Jun 2011 19:03:37 +0000 (12:03 -0700)]
Merge branch 'stable/bug.fixes' of git://git./linux/kernel/git/konrad/xen

* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: off by one errors in multicalls.c
  xen: use the trigger info we already have to choose the irq handler

12 years agocifs: trivial: add space in fsc error message
Jeff Layton [Wed, 8 Jun 2011 11:35:24 +0000 (07:35 -0400)]
cifs: trivial: add space in fsc error message

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
12 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Jun 2011 15:36:15 +0000 (08:36 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf: Fix comments in include/linux/perf_event.h
  perf: Comment /proc/sys/kernel/perf_event_paranoid to be part of user ABI
  perf python: Fix argument name list of read_on_cpu()
  perf evlist: Don't die if sample_{id_all|type} is invalid
  perf python: Use exception to propagate errors
  perf evlist: Remove dependency on debug routines
  perf, cgroups: Fix up for new API

12 years agoMerge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Wed, 8 Jun 2011 15:22:29 +0000 (08:22 -0700)]
Merge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6

* 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6:
  gpio/samsung: make Kconfig options def_bool
  gpio/exynos4: Fix incorrect mapping of gpio pull-up macro to register setting
  GPIO: OMAP: add locking around calls to _set_gpio_triggering
  GPIO: OMAP: fix setting IRQWAKEN bits for OMAP4
  GPIO: OMAP: fix section mismatch warnings
  gpio: Fix gpio-exynos4 build fails in mainline

12 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Wed, 8 Jun 2011 15:21:48 +0000 (08:21 -0700)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  [media] soc_camera: preserve const attribute
  [media] uvc_entity: initialize return value
  [media] media: Fix media device minor registration
  [media] Make nchg variable signed because the code compares this variable against negative values
  [media] omap3isp: fix compiler warning
  [media] v4l: Fix media_entity_to_video_device macro argument name
  [media] ivtv: Internally separate encoder & decoder standard setting
  [media] ivtvfb: Add sanity check to ivtvfb_pan_display()
  [media] ivtvfb: use display information in info not in var for panning
  [media] ivtv: Make two ivtv_msleep_timeout calls uninterruptable
  [media] anysee: return EOPNOTSUPP for unsupported I2C messages
  [media] gspca - ov519: Set the default frame rate to 15 fps
  [media] gspca - stv06xx: Set a lower default value of gain for hdcs sensors
  [media] gspca: Remove coarse_expo_autogain.h
  [media] gspca - ov519: Change the ovfx2 bulk transfer size
  [media] gspca - ov519: Fix a regression for ovfx2 webcams

12 years agoMerge branch 'drm-radeon-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 8 Jun 2011 15:19:14 +0000 (08:19 -0700)]
Merge branch 'drm-radeon-urgent' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-radeon-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: disable hdmi audio by default
  drm/radeon/kms: fix for radeon on systems >4GB without hardware iommu
  drm/radeon/kms: set family for use in parser.

12 years agoMerge branch 'for_3.0/gpio-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Grant Likely [Wed, 8 Jun 2011 15:12:16 +0000 (09:12 -0600)]
Merge branch 'for_3.0/gpio-fixes' of git://git./linux/kernel/git/khilman/linux-omap-pm into gpio/merge

12 years agotty_buffer: get rid of 'seen_tail' logic in flush_to_ldisc
Linus Torvalds [Wed, 8 Jun 2011 14:46:30 +0000 (07:46 -0700)]
tty_buffer: get rid of 'seen_tail' logic in flush_to_ldisc

The flush_to_ldisc() work entry has special logic to notice when it has
seen the original tail of the data queue, and it avoids continuing the
flush if it sees that _original_ tail rather than the current tail.

This logic can trigger in case somebody is constantly adding new data to
the tty while the flushing is active - and the intent is to avoid
excessive CPU usage while flushing the tty, especially as we used to do
this from a softirq context which made it non-preemptible.

However, since we no longer re-arm the work-queue from within itself
(because that causes other trouble: see commit a5660b41af6a "tty: fix
endless work loop when the buffer fills up"), this just leads to
possible hung tty's (most easily seen in SMP and with a test-program
that floods a pty with data - nobody seems to have reported this for any
real-life situation yet).

And since the workqueue isn't done from timers and softirq's any more,
it's doubtful whether the CPU useage issue is really relevant any more.
So just remove the logic entirely, and see if anybody ever notices.

Alternatively, we might want to re-introduce the "re-arm the work" for
just this case, but then we'd have to re-introduce the delayed work
model or some explicit timer, which really doesn't seem worth it for
this.

Reported-and-tested-by: Guillaume Chazarain <guichaz@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrm/radeon/kms: disable hdmi audio by default
Alex Deucher [Mon, 6 Jun 2011 21:39:16 +0000 (17:39 -0400)]
drm/radeon/kms: disable hdmi audio by default

The current RE'd code causes blank screens and
display problems on a lot of systems.  So disable
it by default for now.  It can still be enabled
by setting the audio parameter to 1.  E.g.:
radeon.audio=1

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=38010
https://bugs.freedesktop.org/show_bug.cgi?id=27731
https://bugs.freedesktop.org/show_bug.cgi?id=35970
https://bugs.freedesktop.org/show_bug.cgi?id=26195
and many other reported problems.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/radeon/kms: fix for radeon on systems >4GB without hardware iommu
Daniel Haid [Wed, 8 Jun 2011 10:04:45 +0000 (20:04 +1000)]
drm/radeon/kms: fix for radeon on systems >4GB without hardware iommu

On my x86_64 system with >4GB of ram and swiotlb instead of
a hardware iommu (because I have a VIA chipset), the call
to pci_set_dma_mask (see below) with 40bits returns an error.

But it seems that the radeon driver is designed to have
need_dma32 = true exactly if pci_set_dma_mask is called
with 32 bits and false if it is called with 40 bits.

I have read somewhere that the default are 32 bits. So if the
call fails I suppose that need_dma32 should be set to true.

And indeed the patch fixes the problem I have had before
and which I had described here:
http://choon.net/forum/read.php?21,106131,115940

Acked-by: Alex Deucher <alexdeucher@gmail.com>
cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/radeon/kms: set family for use in parser.
Dave Airlie [Wed, 8 Jun 2011 09:58:29 +0000 (19:58 +1000)]
drm/radeon/kms: set family for use in parser.

Wierdly the kms parser never initialised the family, it wasn't really used
much, but the fmt checker patch started using it and it fell over.

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Jun 2011 02:21:11 +0000 (19:21 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Ensure we locate the passed IRQ in irq_alloc_descs()
  genirq: Fix descriptor init on non-sparse IRQs
  irq: Handle spurios irq detection for threaded irqs
  genirq: Print threaded handler in spurious debug output

12 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Jun 2011 02:20:53 +0000 (19:20 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/amd-iommu: Fix boot crash with hidden PCI devices
  x86/amd-iommu: Use only per-device dma_ops
  x86/amd-iommu: Fix 3 possible endless loops

12 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Jun 2011 02:20:28 +0000 (19:20 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix/clarify set_task_cpu() locking rules
  lockdep: Fix lock_is_held() on recursion
  sched: Fix schedstat.nr_wakeups_migrate
  sched: Fix cross-cpu clock sync on remote wakeups

12 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Wed, 8 Jun 2011 02:09:26 +0000 (19:09 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/nv40: fall back to paged dma object for the moment
  drm/nouveau: fix leak of gart mm node
  drm/nouveau: fix vram page mapping when crossing page table boundaries
  drm/nv17-nv40: Fix modesetting failure when pitch == 4096px (fdo bug 35901).
  drm/nouveau: don't create accel engine objects when noaccel=1
  drm/nvc0: recognise 0xdX chipsets as NV_C0
  drm/i915: Add a no lvds quirk for the Asus EeeBox PC EB1007
  drm/i915: Share the common force-audio property between connectors
  drm/i915: Remove unused enum "chip_family"
  drm/915: fix relaxed tiling on gen2: tile height
  drm/i915/crt: Explicitly return false if connected to a digital monitor
  drm/i915: Replace ironlake_compute_wm0 with g4x_compute_wm0
  drm/i915: Only print out the actual number of fences for i915_error_state
  drm/i915: s/addr & ~PAGE_MASK/offset_in_page(addr)/
  drm: i915: correct return status in intel_hdmi_mode_valid()
  drm/i915: fix regression after clock gating init split
  drm/i915: fix if statement in ivybridge irq handler

12 years agoMerge branch 'drm-radeon-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 8 Jun 2011 02:09:17 +0000 (19:09 -0700)]
Merge branch 'drm-radeon-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-radeon-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms/atom: fix PHY init
  drm/radeon/kms: add missing Evergreen texture formats to the CS parser
  drm/radeon/kms: viewport height has to be even
  drm/radeon/kms: remove duplicate reg from r600 safe regs
  drm/radeon/kms: add support for Llano Fusion APUs
  drm/radeon/kms: add llano pci ids
  drm/radeon/kms: fill in asic struct for llano
  drm/radeon/kms: add family ids for llano APUs
  drm/radeon: fix oops in ttm reserve when pageflipping (v2)
  drm/radeon/kms: clean up the radeon kms Kconfig
  drm/radeon/kms: fix thermal sensor reading on juniper
  drm/radeon/kms: add missing case for cayman thermal sensor
  drm/radeon/kms: add blit support for cayman (v2)
  drm/radeon/kms/blit: workaround some hw issues on evergreen+

12 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Jun 2011 02:07:22 +0000 (19:07 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  timers: Consider slack value in mod_timer()
  clockevents: Handle empty cpumask gracefully

12 years agoMerge branch 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 8 Jun 2011 02:06:28 +0000 (19:06 -0700)]
Merge branch 'kvm-updates/3.0' of git://git./virt/kvm/kvm

* 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Initialize kvm before registering the mmu notifier
  KVM: x86: use proper port value when checking io instruction permission
  KVM: add missing void __user * cast to access_ok() call

12 years agoMAINTAINERS: Saying goodbye to David Brownell
Grant Likely [Mon, 6 Jun 2011 06:40:48 +0000 (00:40 -0600)]
MAINTAINERS: Saying goodbye to David Brownell

We had to say goodbye when David passed away recently.  David had a
huge impact on our community, both personally in the lives of the
people he worked with, and technically in the design and maintenance
of several subsystems.  He is greatly missed.

He also leaves behind a number of much loved subsystems now orphaned.
This patch updates the MAINTAINERS file for the areas that David was
responsible for and adds an entry for him to the CREDITS file.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Harry Wei <harryxiyou@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
Linus Torvalds [Wed, 8 Jun 2011 02:04:21 +0000 (19:04 -0700)]
Merge git://git./linux/kernel/git/hirofumi/fatfs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:
  fat: Fix corrupt inode flags when remove ATTR_SYS flag

12 years agoMN10300: Add missing _sdata declaration
David Howells [Mon, 6 Jun 2011 14:47:23 +0000 (15:47 +0100)]
MN10300: Add missing _sdata declaration

_sdata needs to be declared in the linker script now as of commit
a2d063ac216c ("extable, core_kernel_data(): Make sure all archs define
_sdata")

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMN10300: die_if_no_fixup() shouldn't use get_user() as it doesn't call set_fs()
David Howells [Mon, 6 Jun 2011 14:47:14 +0000 (15:47 +0100)]
MN10300: die_if_no_fixup() shouldn't use get_user() as it doesn't call set_fs()

die_if_no_fixup() shouldn't use get_user() as it doesn't call set_fs() to
indicate that it wants to probe a kernel address.  Instead it should use
probe_kernel_read().

This fixes the problem of gdb seeing SIGILL rather than SIGTRAP when hitting
the KGDB special breakpoint upon SysRq+g being seen.  The problem was that
die_if_no_fixup() was failing to read the opcode of the instruction that caused
the exception, and thus not fixing up the exception.

This caused gdb to get a S04 response to the $? request in its remote protocol
rather than S05 - which would then cause it to continue with $C04 rather than
$c in an attempt to pass the signal onto the inferior process.  The kernel,
however, does not support $Cnn, and so objects by returning an E22 response,
indicating an error.  gdb does not expect this and prints:

warning: Remote failure reply: E22

and then returns to the gdb command prompt unable to continue.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMN10300: Fix one of the kernel debugger cacheflush variants
David Howells [Mon, 6 Jun 2011 14:47:05 +0000 (15:47 +0100)]
MN10300: Fix one of the kernel debugger cacheflush variants

One of the kernel debugger cacheflush variants escaped proper testing.  Two of
the labels are wrong, being derived from the code that was copied to construct
the variant.

The first label results in the following assembler message:

    AS      arch/mn10300/mm/cache-dbg-flush-by-reg.o
  arch/mn10300/mm/cache-dbg-flush-by-reg.S: Assembler messages:
  arch/mn10300/mm/cache-dbg-flush-by-reg.S:123: Error: symbol `debugger_local_cache_flushinv_no_dcache' is already defined

And the second label results in the following linker message:

  arch/mn10300/mm/built-in.o:(.text+0x1d39): undefined reference to `mn10300_local_icache_inv_range_reg_end'
  arch/mn10300/mm/built-in.o:(.text+0x1d39): relocation truncated to fit: R_MN10300_PCREL16 against undefined symbol `mn10300_local_icache_inv_range_reg_end'

To test this file the following configuration pieces must be set:

CONFIG_AM34=y
CONFIG_MN10300_CACHE_WBACK=y
CONFIG_MN10300_DEBUGGER_CACHE_FLUSH_BY_REG=y
CONFIG_MN10300_CACHE_MANAGE_BY_REG=y
CONFIG_AM34_HAS_CACHE_SNOOP=n

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Wed, 8 Jun 2011 01:47:53 +0000 (18:47 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] fix kvm defines for 31 bit compile
  [S390] use generic RCU page-table freeing code
  [S390] qdio: Split SBAL entry flags
  [S390] kvm-s390: fix stfle facilities numbers >=64
  [S390] kvm-s390: Fix host crash on misbehaving guests

12 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux...
Linus Torvalds [Wed, 8 Jun 2011 01:46:37 +0000 (18:46 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (21 commits)
  ARM: OMAP4: MMC: increase delay for pbias
  arm: omap2plus: move NAND_BLOCK_SIZE out of boards
  omap4: hwmod: Enable the keypad
  omap3: Free Beagle rev gpios when they are read, so others can read them later
  arm: omap3: beagle: Ensure msecure is mux'd to be able to set the RTC
  omap: rx51: Don't power up speaker amplifier at bootup
  omap: rx51: Set regulator V28_A always on
  ARM: OMAP4: MMC: no regulator off during probe for eMMC
  arm: omap2plus: fix ads7846 pendown gpio request
  ARM: OMAP2: Add missing iounmap in omap4430_phy_init
  ARM: omap4: Pass core and wakeup mux tables to omap4_mux_init
  ARM: omap2+: mux: Allow board mux settings to be NULL
  OMAP4: fix return value of omap4_l3_init
  OMAP: iovmm: fix SW flags passed by user
  arch/arm/mach-omap1/dma.c: Invert calls to platform_device_put and platform_device_del
  OMAP2+: mux: fix compilation warnings
  OMAP: SRAM: Fix warning: format '%08lx' expects type 'long unsigned int'
  arm: omap3: cm-t3517: fix section mismatch warning
  OMAP2+: Fix 9 section mismatch(es) warnings from mach-omap2/built-in.o
  ARM: OMAP2: Add missing include of linux/gpio.h
  ...

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Wed, 8 Jun 2011 01:44:10 +0000 (18:44 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Processes waiting on inode glock that no processes are holding

12 years agoMerge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Jun 2011 01:41:26 +0000 (18:41 -0700)]
Merge branch 'fbdev-fixes-for-linus' of git://git./linux/kernel/git/lethal/fbdev-3.x

* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x:
  video: Fix use-after-free by vga16fb on rmmod
  video: Convert vmalloc/memset to vzalloc
  efifb: Disallow manual bind and unbind
  efifb: Fix mismatched request/release_mem_region
  efifb: Enable write-combining
  drivers/video/pxa168fb.c: add missing clk_put
  drivers/video/imxfb.c: add missing clk_put
  fbdev: bf537-lq035: add missing blacklight properties type
  savagefb: Use panel CVT mode as default
  fbdev: sh_mobile_lcdcfb: Fix up fallout from MERAM changes.

12 years agoMerge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro...
Linus Torvalds [Wed, 8 Jun 2011 01:36:59 +0000 (18:36 -0700)]
Merge branch 'for-linus-2' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  vfs: make unlink() and rmdir() return ENOENT in preference to EROFS
  lmLogOpen() broken failure exit
  usb: remove bad dput after dentry_unhash
  more conservative S_NOSEC handling

12 years agoRevert "USB: option: add ID for ZTE MF 330"
Greg Kroah-Hartman [Tue, 7 Jun 2011 22:03:37 +0000 (15:03 -0700)]
Revert "USB: option: add ID for ZTE MF 330"

This reverts commit a559d2c8c1bf652ea2d0ecd6ab4a250fcdb37db8.

Turns out that device id 0x1d6b:0x0002 is a USB hub, which causes havoc
when the option driver tries to bind to it.

So revert this as it doesn't seem to be needed at all.

Thanks to Michael Tokarev and Paweł Drobek for working on resolving this
issue.

Cc: Paweł Drobek <pawel.drobek@gmail.com>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
12 years agoPM / Runtime: Fix loops in pm_runtime_clk_notify()
Rafael J. Wysocki [Tue, 7 Jun 2011 21:34:58 +0000 (23:34 +0200)]
PM / Runtime: Fix loops in pm_runtime_clk_notify()

The loops over connection ID strings in pm_runtime_clk_notify()
should actually iterate over the strings and not over the elements
of the first of them, so make them behave as appropriate.

This fixes a regression introduced by commit 600b776eb39a13a28b090
(OMAP1 / PM: Use generic clock manipulation routines for runtime PM).

Reported-and-tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agogpio/samsung: make Kconfig options def_bool
H Hartley Sweeten [Tue, 7 Jun 2011 20:37:27 +0000 (14:37 -0600)]
gpio/samsung: make Kconfig options def_bool

The Samsung GPIO drivers are always built-in when the relevant
platform is selected.  Change the Kconfig symbol to def_bool y
dependant on the platform.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
12 years agoPM / Intel IOMMU: Fix init_iommu_pm_ops() for CONFIG_PM unset
Rafael J. Wysocki [Tue, 7 Jun 2011 19:32:31 +0000 (21:32 +0200)]
PM / Intel IOMMU: Fix init_iommu_pm_ops() for CONFIG_PM unset

If CONFIG_PM is not set, init_iommu_pm_ops() introduced by commit
134fac3f457f3dd753ecdb25e6da3e5f6629f696 (PCI / Intel IOMMU: Use
syscore_ops instead of sysdev class and sysdev) is not defined
appropriately.  Fix this issue.

Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agogpio/exynos4: Fix incorrect mapping of gpio pull-up macro to register setting
Thomas Abraham [Tue, 7 Jun 2011 08:34:49 +0000 (14:04 +0530)]
gpio/exynos4: Fix incorrect mapping of gpio pull-up macro to register setting

The S3C_GPIO_PULL_UP macro value incorrectly maps to a reserved setting of GPIO
pull up/down registers on Exynos4 platform. Fix this incorrect mapping by adding
wrappers to the s3c_gpio_setpull_updown and s3c_gpio_getpull_updown functions.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
12 years agodrivers/usb/host/ohci-pxa27x.c: add missing clk_put
Julia Lawall [Wed, 1 Jun 2011 17:10:06 +0000 (19:10 +0200)]
drivers/usb/host/ohci-pxa27x.c: add missing clk_put

Add a label before the call to clk_put and jump to that in the error
handling code that occurs after the call to clk_get has succeeded.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression e1,e2;
statement S;
@@

e1 = clk_get@p1(...);
... when != e1 = e2
    when != clk_put(e1)
    when any
if (...) { ... when != clk_put(e1)
               when != if (...) { ... clk_put(e1) ... }
* return@p3 ...;
 } else S
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
12 years agoUSB: CONFIG_USB_GADGET_DUALSPEED is not user-configurable
Alan Stern [Tue, 7 Jun 2011 15:31:05 +0000 (11:31 -0400)]
USB: CONFIG_USB_GADGET_DUALSPEED is not user-configurable

This patch (as1468) changes the Kconfig definition for
USB_GADGET_DUALSPEED.  This option is determined entirely by which
device controller drivers are to be built, through Select statements;
it does not need to be (and should not be) configurable by the user.

Also, the "default n" line is superfluous -- everything defaults to N.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>