Commit Graph

83278 Commits

Author SHA1 Message Date
Lee Jones 2388af4e9b ARM: ux500: Allocate correct amount of memory for the u8540 in DT
As it stands, the memory node in the u8540 Device Tree is ignored and
memory is actually stipulated by the bootloader via ATAGS. ARM core
architecture code then extracts the memory ATAG and inserts it into the
Device Tree. In the u8540 the LittleKernel bootloader only stipulates
512MB of memory; however, the u8540 actually has 2GB. We're taking the
responsibility to register the remainder from Device Tree here.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:16:17 +02:00
Fabio Baltieri ef95f7ff0f ARM: ux500: Provide auxdata to ux500 ASoC driver
Ux500 ASoC driver is expected to have a specific device name to get
clock resources correctly.  This patch provides the necessary
OF_DEV_AUXDATA to match the name in DT and non-DT cases.

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:07:14 +02:00
Fabio Baltieri f99808a669 ARM: ux500: Add DT regulators for ab8500-codec
Add regulator DT bindings for the ab8500-codec driver.

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:07:07 +02:00
Fabio Baltieri 5510ed9f05 ARM: ux500: Correct anamic2 typo in DT files
Fix typo of VAMIC2 LDO regulator name in some DT-related files.  This
patch replaces all occurrences with the right name.

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:07:02 +02:00
Fabio Baltieri 4aa44874fa ARM: ux500: Fix trivial typo in v-anamic1 comment
Fix VAMIC1 LDO comment in DT files to be make it coherent with the
others.

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:06:50 +02:00
Lee Jones fce43dbe01 ARM: ux500: Reduce PRCMU reg-names to shorter form for u8540 DT
After some discussion and deliberation we have decided to only use the
short form of the PRCMU register names i.e. not mention the peripheral
in which the registers reside.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 10:52:59 +02:00
Lee Jones df790f587b ARM: ux500: Add an auxdata entry for MUSB for clock-name look-up
The recently DT:ed MUSB driver will require clock-name by device-name
look-up capability, until common clk has is properly supported by the
ux500 platform.

Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-30 10:42:00 +02:00
Linus Walleij 2a9c8faf9f ARM: ux500: cut chip-select GPIOs from SSP device
What GPIO pin is used with which device on the SSP/SPI bus
is as board-specific as it gets, so it does not belong here
in the core SoC file, and it is disabled so it doesn't hurt
to delete this.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-30 09:51:24 +02:00
Linus Walleij 90c40257fe ARM: ux500: use symbolic names for interrupt flags
This switches to including <dt-bindings/interrupt-controller/irq.h>
and referencing the apropriate flags from there instead of
open-coding the flag numerals everywhere in the ux500 device
trees.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-30 09:50:47 +02:00
Gabriel Fernandez 807e8838e3 ARM: ux500: use #include syntax to include *.dtsi.
This patch prepares the use of '#define' into dts files.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-29 18:38:40 +02:00
Linus Walleij 90ccde4cd5 ARM: ux500: bump MMC/SD max frequency for DT boots
In patch:
"ARM: ux500: Enable 100MHz for SD/SDIO/MMC devices"
the max frequency for the MMC/SD/SDIO adapters was
increased from 50 to 100MHz. Do the same for the
device tree boot path.

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Gabriel Fernandez <gabriel.fernandez.st@gmail.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:59 +02:00
Lee Jones 8afff9ca97 ARM: ux500: Apply other compatible name to the u8540 DTS file
Devices in board DTS files are usually searchable by multiple
compatible strings. In this case the 8540 based SoC should be
obtainable via the chipset [DB8540 & AB8540] name 'u8540' or
the board name 'ccu8540'. It's already possible to obtain the
Device Tree via its chipset name, this patch makes it possible
to get it by its board name too.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:59 +02:00
Lee Jones 79d1d62c95 ARM: ux500: Standardise Pinctrl compatible string for DBx5x based platforms
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:59 +02:00
Lee Jones 818d99a949 ARM: ux500: Standardise DBx5x0 based Pinctrl compat string in the DTS
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:58 +02:00
Linus Walleij 12b1843c1a ARM: ux500: enable the crypto and hash on all dbx500
Commits:
"ARM: ux500: Add Device Tree nodes for the ux500 Crypt device"
"ARM: ux500: Add Device Tree nodes for the ux500 Hash device"

Added the crypto and hash devices conditionally, i.e. so as to
be turned on per-board by setting an "status" property on the
device from "disabled" to "okay" on each device.

This is wrong since this is an SoC feature, it is not board
dependent. It is the same ASIC under all circumstances and
functionality does not vary with board family.

This moves the enablement into the SoC file.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:58 +02:00
Lee Jones f016d440e6 ARM: ux500: Provide an AUXDATA entry for ux500-hash
This provides a device name which is required by the common clk API.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:58 +02:00
Lee Jones 946cc7dd7d ARM: ux500: Provide an AUXDATA entry for ux500-crypt
This provides a device name which is required by the common clk API.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Edited patch subject]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:57 +02:00
Lee Jones 61122cf27d ARM: ux500: Add Device Tree nodes for the ux500 Hash device
This patch provides information required to setup ux500-hash when
booting with DT on the Snowball low-cost development platform.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:13 +02:00
Lee Jones fe2e9f921f ARM: ux500: Add Device Tree nodes for the ux500 Crypt device
This patch provides information required to setup ux500-crypt when
booting with DT on the Snowball low-cost development platform.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:13 +02:00
Linus Walleij 2bd7378f9c ARM: ux500: register LP5521 LEDs in the device tree
Based on pending device tree support in the LP55xx drivers
we can add the correct LED and channel configuration from the
ux500 device tree for all HREF variants.

Cc: Bryan Wu <cooloney@gmail.com>
Acked-by: Milo Kim <Milo.Kim@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:13 +02:00
Linus Walleij 2852136858 ARM: ux500: fix typo in STUIB device tree
The Rohm vendor name was twisted in the STUIB device tree
include file. Fix it up.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:13 +02:00
Linus Walleij 1d8c269de0 ARM: ux500: build ccu8540 device tree blob
This makes sure the new ccu8540 DTB file is generated by
the build system.

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Gabriel Fernandez <gabriel.fernandez.st@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:13 +02:00
Lee Jones 54ddca4dee ARM: ux500: Over-ride TCDM size when booting the DB8540 platform
The PRCMU's Tightly Coupled Data Memory on the DB8540 platform is
8kB larger than it's predecessor's. We need to reflect that in its
Device Tree. By re-specifying the address and size of the device
we effectively over-ride the previous values with more accurate
ones.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:13 +02:00
Lee Jones c70b4a9332 ARM: ux500: Supply a DTS file for the u8540 platform
This is a skeleton DTS file which only enables serial. Just using
this simple file yields a terminal when booting u8540.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Lee Jones d37fcdb6ae ARM: ux500: Pass DMA memcpy channels though Device Tree
It's now possible to configure memcpy channels dynamically with DT.
We're providing them despite the fact that they're the same as the
hard-coded channels, as they will be removed once the u8500 platform
goes DT-only.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Lee Jones b32dc86539 ARM: ux500: Populate the ux500-musb Device Tree entry
This patch provides all the information to successfully probe() and
correctly configure the ux500-musb device driver for DMA.

Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Lee Jones 498315b981 ARM: ux500: Supply MMC DMA configuration via Device Tree
When requesting a channel, a DMA client needs to pass some pieces of
information such as; request channel, device type, channel type and
direction etc. Normally we do this in the form of platform data, but
when DT is enabled we need to pass it using the driver's bindings
instead.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Lee Jones fbff01cce0 ARM: ux500: Supply UART's DMA configuration via Device Tree
When requesting a channel, a DMA client needs to pass some pieces of
information such as; request channel, device type, channel type and
direction etc. Normally we do this in the form of platform data, but
when DT is enabled we need to pass it using the driver's bindings
instead.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Lee Jones ba074aeceb ARM: ux500: Setup the DMA40 driver's DT node using the new DMA API
The new DMA is now available, so let's use it to setup ST-Ericsson's
DMA40 driver when Device Tree is enabled.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Lee Jones 70d39a8d2d ARM: ux500: Supply address location names for the DMA40 DMA controller
The DMA40 controller uses two sets of base addresses. In order to have
the resources setup by the of_platform framework so they are searchable
by name instead of index, we have to set names for them. The names have
to be the same as the ones used to fetch them back out of the resource
structure.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:12 +02:00
Fabio Baltieri 99b38eef5a ARM: ux500: Fix intcore regulator name
Ux500 regulator name for V-INTCORE is misspelled as vinitcore instead of
vintcore in some .dts file, causing the AB8500 regulator driver to not
bind properly.  Fix this by replacing all occurrences with the right
name.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:11 +02:00
Gabriel Fernandez b1ba1439e3 ARM: ux500: DT: Rename root node "soc-u9500" into "soc"
This root node is used in the whole family of chips, the a9500
is just one particular instance. Nodes should be named after
the type of object rather than identity.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@stericsson.com>
Reviewed-by: Philippe Langlais <philippe.langlais@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:11 +02:00
Lee Jones 383307c2be ARM: ux500: Add a VQMMC (level-shifting) regulator DT node for Snowball
Until recently platform code took care of all MMCI level-shifting by
way of an ios_handler() call-back. Now it is the driver's responsibility
to handle. In order to so that we need to provide the VQMMC regulator
reference in Device Tree. This patch takes care of that.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:11 +02:00
Lee Jones c21a43b775 ARM: ux500: Create a new of_dev_auxdata structure for u8540 enablement
If we attempt to use the existing u8500 of_dev_auxdata struct to boot
the u8540, we fail to obtain a console, due to a lack of DMA support
on the platform.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:11 +02:00
Lee Jones 6c1d25b0b7 ARM: ux500: Move Snowball's thermal DT node into existing PRCMU one
When the thermal DT node was inserted a new PRCMU node was created;
however, one already exists in the Snowball DTS file. Here we
amalgamate the two into a single consolidated node.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 14:07:11 +02:00
Linus Torvalds 95f4838e21 Merge branch 'parisc-for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
 "This time we made the kernel- and interruption stack allocation
  reentrant which fixed some strange kernel crashes (specifically
  protection ID traps).

  Furthemore this patchset fixes the interrupt stack in UP and SMP
  configurations by using native locking instructions.  And finally
  usage of floating point calculations on parisc were disabled in the
  MPILIB."

* 'parisc-for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: fix irq stack on UP and SMP
  parisc/superio: Use module_pci_driver to register driver
  parisc: make interrupt and interruption stack allocation reentrant
  parisc: show number of FPE and unaligned access handler calls in /proc/interrupts
  parisc: add additional parisc git tree to MAINTAINERS file
  parisc: use PAGE_SHIFT instead of hardcoded value 12 in pacache.S
  parisc: add rp5470 entry to machine database
  MPILIB: disable usage of floating point registers on parisc
2013-05-26 09:36:31 -07:00
Kyle McMartin 6b3f7b5c22 score: remove redundant kcore_list entries
kcore_vmalloc is in fs/proc/kcore.c and kcore_mem is unused across
the tree. Noticed while grepping the tree for some other kcore stuff.

(score looks pretty unmaintained to me.)

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-25 10:27:27 -07:00
Linus Torvalds 462a2b58b9 Fixes for 3.10
* Fallouts/wreckage of Cache Flush optimizations / aliasing dcache support
 
 * Fix for an interesting bug where piped input to grep was getting
   mysteriously clobbered
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Merge tag 'arc-v3.10-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - Fallouts/wreckage of Cache Flush optimizations / aliasing dcache
   support

 - Fix for an interesting bug where piped input to grep was getting
   mysteriously clobbered

* tag 'arc-v3.10-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: lazy dcache flush broke gdb in non-aliasing configs
  ARC: Use enough bits for determining page's cache color
  ARC: Brown paper bag bug in macro for checking cache color
  ARC: copy_(to|from)_user() to honor usermode-access permissions
  ARC: [mm] Prevent stray dcache lines after__sync_icache_dcach()
  ARC: [TB10x] Remove redundant abilis,simple-pinctrl mechanism
2013-05-25 10:06:20 -07:00
Linus Torvalds 4dd9aa8948 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "Just three this time, all really quite small"

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7729/1: vfp: ensure VFP_arch is non-zero when VFP is not supported
  ARM: 7727/1: remove the .vm_mm value from gate_vma
  ARM: 7723/1: crypto: sha1-armv4-large.S: fix SP handling
2013-05-25 10:05:24 -07:00
Vineet Gupta 7bb66f6e6e ARC: lazy dcache flush broke gdb in non-aliasing configs
gdbserver inserting a breakpoint ends up calling copy_user_page() for a
code page. The generic version of which (non-aliasing config) didn't set
the PG_arch_1 bit hence update_mmu_cache() didn't sync dcache/icache for
corresponding dynamic loader code page - causing garbade to be executed.

So now aliasing versions of copy_user_highpage()/clear_page() are made
default. There is no significant overhead since all of special alias
handling code is compiled out for non-aliasing build

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-25 14:15:55 +05:30
Linus Torvalds 00cec111ac ARM: SoC fixes for 3.10-rc
We didn't have any fixes sent up for -rc2, so this is a slightly larger
 batch. A bit all over the place platform-wise; OMAP, at91, marvell,
 renesas, sunxi, ux500, etc.
 
 I tried to summarize highlights but there isn't a whole lot to point
 out. Lots of little things fixed all over. A couple of defconfig updates
 due to new/changing options.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "We didn't have any fixes sent up for -rc2, so this is a slightly
  larger batch.  A bit all over the place platform-wise; OMAP, at91,
  marvell, renesas, sunxi, ux500, etc.

  I tried to summarize highlights but there isn't a whole lot to point
  out.  Lots of little things fixed all over.  A couple of defconfig
  updates due to new/changing options."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
  ARM: at91/sama5: fix incorrect PMC pcr div definition
  ARM: at91/dt: fix macb pinctrl_macb_rmii_mii_alt definition
  ARM: at91: at91sam9n12: move external irq declatation to DT
  ARM: shmobile: marzen: Use error values in usb_power_*
  ARM: tegra: defconfig fixes
  ARM: nomadik: fix IRQ assignment for SMC ethernet
  ARM: vt8500: Add missing NULL terminator in dt_compat
  clk: tegra: add ac97 controller clock
  clk: tegra: remove USB from clk init table
  ARM: dts: mvebu: Fix wrong the address reg value for the L2-cache node
  ARM: plat-orion: Fix num_resources and id for ge10 and ge11
  ARM: OMAP2+: hwmod: Remove sysc slave idle and auto idle apis
  SERIAL: OMAP: Remove the slave idle handling from the driver
  ARM: OMAP2+: serial: Remove the un-used slave idle hooks
  ARM: OMAP2+: hwmod-data: UART IP needs software control to manage sidle modes
  ARM: OMAP2+: hwmod: Add a new flag to handle SIDLE in SWSUP only in active
  ARM: OMAP2+: hwmod: Fix sidle programming in _enable_sysc()/_idle_sysc()
  arm: mvebu: fix the 'ranges' property to handle PCIe
  ARM: mvebu: select ARCH_REQUIRE_GPIOLIB for mvebu platform
  ARM: AM33XX: Add missing .clkdm_name to clkdiv32k_ick clock
  ...
2013-05-24 16:27:37 -07:00
Olof Johansson f4ae176c62 Small set of fixes for 3.10:
- Fix build breakage in pinctrl driver when no other architecture is selected
   - Fix Mini X-plus device tree build
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Merge tag 'sunxi-fixes-for-3.10' of git://github.com/mripard/linux into fixes

From Maxime Ripard:
Small set of fixes for 3.10:
  - Fix build breakage in pinctrl driver when no other architecture is selected
  - Fix Mini X-plus device tree build

* tag 'sunxi-fixes-for-3.10' of git://github.com/mripard/linux:
  ARM: sunxi: select ARCH_REQUIRE_GPIOLIB
  ARM: sunxi: Fix Mini X-plus device tree build

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-24 15:50:28 -07:00
Helge Deller d96b51ec14 parisc: fix irq stack on UP and SMP
The logic to detect if the irq stack was already in use with
raw_spin_trylock() is wrong, because it will generate a "trylock failure
on UP" error message with CONFIG_SMP=n and CONFIG_DEBUG_SPINLOCK=y.

arch_spin_trylock() can't be used either since in the CONFIG_SMP=n case
no atomic protection is given and we are reentrant here. A mutex didn't
worked either and brings more overhead by turning off interrupts.

So, let's use the fastest path for parisc which is the ldcw instruction.

Counting how often the irq stack was used is pretty useless, so just
drop this piece of code.

Signed-off-by: Helge Deller <deller@gmx.de>
2013-05-24 23:29:01 +02:00
John David Anglin b63a2bbc0b parisc: make interrupt and interruption stack allocation reentrant
The get_stack_use_cr30 and get_stack_use_r30 macros allocate a stack
frame for external interrupts and interruptions requiring a stack frame.
They are currently not reentrant in that they save register context
before the stack is set or adjusted.

I have observed a number of system crashes where there was clear
evidence of stack corruption during interrupt processing, and as a
result register corruption. Some interruptions can still occur during
interruption processing, however external interrupts are disabled and
data TLB misses don't occur for absolute accesses. So, it's not entirely
clear what triggers this issue. Also, if an interruption occurs when
Q=0, it is generally not possible to recover as the shadowed registers
are not copied.

The attached patch reworks the get_stack_use_cr30 and get_stack_use_r30
macros to allocate stack before doing register saves. The new code is a
couple of instructions shorter than the old implementation. Thus, it's
an improvement even if it doesn't fully resolve the stack corruption
issue. Based on limited testing, it improves SMP system stability.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
2013-05-24 22:35:36 +02:00
Helge Deller d0c3be806a parisc: show number of FPE and unaligned access handler calls in /proc/interrupts
Show number of floating point assistant and unaligned access fixup
handler in /proc/interrupts file.

Signed-off-by: Helge Deller <deller@gmx.de>
2013-05-24 22:35:26 +02:00
Helge Deller d845b5fb36 parisc: use PAGE_SHIFT instead of hardcoded value 12 in pacache.S
additionally clean up some whitespaces & tabs.

Signed-off-by: Helge Deller <deller@gmx.de>
2013-05-24 22:30:28 +02:00
Helge Deller 949451b9b1 parisc: add rp5470 entry to machine database
Signed-off-by: Helge Deller <deller@gmx.de>
2013-05-24 22:30:20 +02:00
Olof Johansson 4a0cce791e One definition fix that can lead to mis-clock some
AT91 peripherals on SAMA5.
 Two DT related fixes.
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Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes

From Nicolas Ferre:
- One definition fix that can lead to mis-clock some AT91 peripherals on SAMA5.
- Two DT related fixes.

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91/sama5: fix incorrect PMC pcr div definition
  ARM: at91/dt: fix macb pinctrl_macb_rmii_mii_alt definition
  ARM: at91: at91sam9n12: move external irq declatation to DT

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-24 10:12:04 -07:00
Linus Torvalds d4c2456a18 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
 "Some more P8 related bits, a bunch of fixes for our P7+/P8 HW crypto
  drivers, some added workarounds for those radeons that don't do proper
  64-bit MSIs and a couple of other trivialities by myself."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/pseries: Make 32-bit MSI quirk work on systems lacking firmware support
  powerpc/powernv: Build a zImage.epapr
  powerpc: Make radeon 32-bit MSI quirk work on powernv
  powerpc: Context switch more PMU related SPRs
  powerpc/powernv: Fix condition for when to invalidate the TCE cache
  powerpc/pci: Fix bogus message at boot about empty memory resources
  powerpc: Fix TLB cleanup at boot on POWER8
  drivers/crypto/nx: Fixes for multiple races and issues
2013-05-24 08:57:38 -07:00
Josh Wu 144ea15e4f ARM: at91/sama5: fix incorrect PMC pcr div definition
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-05-24 10:53:51 +02:00