Commit Graph

83272 Commits

Author SHA1 Message Date
H. Peter Anvin
a3d7b7dddc x86, asm, cleanup: Replace open-coded control register values with symbolic
Clean up an unnecessary open-coded control register values.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-um7za1nzf6brb17o0h4om6e3@git.kernel.org
2013-06-25 16:26:06 -07:00
H. Peter Anvin
d1fbefcb3a x86, processor-flags: Fix the datatypes and add bit number defines
The control registers are unsigned long (32 bits on i386, 64 bits on
x86-64), and so make that manifest in the data type for the various
constants.  Add defines with a _BIT suffix which defines the bit
number, as opposed to the bit mask.

This should resolve some issues with ~bitmask that Linus discovered.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-cwckhbrib2aux1qbteaebij0@git.kernel.org
2013-06-25 16:26:06 -07:00
H. Peter Anvin
afcbf13fa6 x86: Rename X86_CR4_RDWRGSFS to X86_CR4_FSGSBASE
Rename X86_CR4_RDWRGSFS to X86_CR4_FSGSBASE to match the SDM.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Link: http://lkml.kernel.org/n/tip-buq1evi5dpykxx7ak6amaam0@git.kernel.org
2013-06-25 16:26:06 -07:00
H. Peter Anvin
1adfa76a95 x86, flags: Rename X86_EFLAGS_BIT1 to X86_EFLAGS_FIXED
Bit 1 in the x86 EFLAGS is always set.  Name the macro something that
actually tries to explain what it is all about, rather than being a
tautology.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lkml.kernel.org/n/tip-f10rx5vjjm6tfnt8o1wseb3v@git.kernel.org
2013-06-25 16:25:32 -07:00
Joe Perches
f07d91ede6 x86/vdso: Convert use of typedef ctl_table to struct ctl_table
This typedef is unnecessary and should just be removed.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Jiri Kosina <trivial@kernel.org>
Link: http://lkml.kernel.org/r/a756fa0060e8eea25e8c1863c2764e86c2823617.1371177118.git.joe@perches.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-06-19 15:06:09 +02:00
Jan Beulich
1d10f6ee60 x86: __force_order doesn't need to be an actual variable
It being static causes over a dozen instances to be scattered
across the kernel image, with non of them ever being referenced
in any way. Making the variable extern without ever defining it
works as well - all we need is to have the compiler think the
variable is being accessed.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/51A610B802000078000D99A0@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-05-31 13:09:17 +02:00
Linus Torvalds
dcdbe33add Merge branch 'mn10300' (mn10300 fixes from David Howells)
Merge mn10300 fixes from David Howells.

* emailed patches from David Howells <dhowells@redhat.com>:
  MN10300: Need pci_iomap() and __pci_ioport_map() defining
  MN10300: ASB2305's PCI code needs the definition of XIRQ1
  MN10300: Enable IRQs more in system call exit work path
  MN10300: Fix ret_from_kernel_thread
2013-05-30 13:39:01 +09:00
David Howells
1aeeac7ad4 MN10300: Need pci_iomap() and __pci_ioport_map() defining
Include the generic definitions of pci_iomap() and __pci_ioport_map()
otherwise we can get errors like:

  lib/pci_iomap.c: In function 'pci_iomap':
  lib/pci_iomap.c:37: error: implicit declaration of function '__pci_ioport_map'
  lib/pci_iomap.c:37: warning: return makes pointer from integer without a cast

and:

  drivers/pci/quirks.c: In function 'disable_igfx_irq':
  drivers/pci/quirks.c:2893: error: implicit declaration of function 'pci_iomap'
  drivers/pci/quirks.c:2893: warning: initialization makes pointer from integer without a cast
  drivers/pci/quirks.c: In function 'reset_ivb_igd':
  drivers/pci/quirks.c:3133: warning: assignment makes pointer from integer without a cast

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ken Cox <jkc@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-30 13:38:48 +09:00
David Howells
b8bc9b0237 MN10300: ASB2305's PCI code needs the definition of XIRQ1
The code for PCI in the ASB2305 needs the definition of XIRQ1 from proc/irq.h
otherwise the following error appears:

  arch/mn10300/unit-asb2305/pci.c: In function 'unit_pci_init':
  arch/mn10300/unit-asb2305/pci.c:481: error: 'XIRQ1' undeclared (first use in this function)
  arch/mn10300/unit-asb2305/pci.c:481: error: (Each undeclared identifier is reported only once
  arch/mn10300/unit-asb2305/pci.c:481: error: for each function it appears in.)

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ken Cox <jkc@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-30 13:38:48 +09:00
David Howells
d17fc238ac MN10300: Enable IRQs more in system call exit work path
Enable IRQs when calling schedule() for TIF_NEED_RESCHED and
do_notify_resume().  If interrupts are enabled during do_notify_resume(), a
warning can be seen (see lower down).

Whilst we're at it, resume_userspace can be made local to entry.S as it is not
called outside of there and it can be merged with the part of work_resched that
occurs after schedule() is called.

  WARNING: at kernel/softirq.c:160 local_bh_enable+0x42/0xa0()
  Call Trace:
    local_bh_enable+0x42/0xa0
    unix_release_sock+0x86/0x23c
    unix_release+0x20/0x28
    sock_release+0x17/0x88
    sock_close+0x20/0x28
    __fput+0xc9/0x1fc
    ____fput+0xb/0x10
    task_work_run+0x64/0x78
    do_notify_resume+0x53d/0x544
    work_notifysig+0xa/0xc

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ken Cox <jkc@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-30 13:38:48 +09:00
David Howells
1e00227d4e MN10300: Fix ret_from_kernel_thread
ret_from_kernel_thread needs to set A2 to the thread_info pointer before
jumping to syscall_exit.

Without this, we never correctly start userspace.

This was caused by the rejuggling of the fork/exec paths in commit
ddf23e87a8 ("mn10300: switch to saner kernel_execve() semantics")

Reported-by: Ken Cox <jkc@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ken Cox <jkc@redhat.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-30 13:38:48 +09:00
Linus Torvalds
7b55eab81e Pin control fixes for v3.10:
- Six patches fixing up the suspend/resume and wakeup
   handling of the Samsung and Exynos drivers.
 - Errorpath fixes for four different drivers. All on
   the probe() errorpath.
 - Make the debugfs code for pin config take the right
   mutex.
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Merge tag 'pinctrl-fixes-v3.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin-control fixes from Linus Walleij:
 - Six patches fixing up the suspend/resume and wakeup handling of the
   Samsung and Exynos drivers.
 - Errorpath fixes for four different drivers.  All on the probe()
   errorpath.
 - Make the debugfs code for pin config take the right mutex.

* tag 'pinctrl-fixes-v3.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: pinconf: take the right mutex
  pinctrl: sunxi: fix error return code in sunxi_pinctrl_probe()
  pinctrl: exynos: Handle suspend/resume of GPIO EINT registers
  pinctrl: samsung: Allow per-bank SoC-specific private data
  pinctrl: samsung: Add support for SoC-specific suspend/resume callbacks
  pinctrl: Don't override the error code in probe error handling
  ARM: EXYNOS: Fix EINT wake-up mask configuration when pinctrl is used
  pinctrl: exynos: Add support for set_irq_wake of wake-up EINTs
  pinctrl: samsung: fix suspend/resume functionality
2013-05-30 08:54:29 +09:00
Linus Torvalds
c476321533 ARM: Exynos fixes for 3.10-rc
Here's a shorter set of fixes for 3.10, all for Samsung Exynos platforms.
 
 It also includes a defconfig update so that exynos_defconfig provides
 a meaningful set of drivers to boot an unmodified kernel on the Samsung
 ARM-based Chromebooks.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM Exynos fixes from Olof Johansson:
 "Here's a shorter set of fixes for 3.10, all for Samsung Exynos
  platforms.

  It also includes a defconfig update so that exynos_defconfig provides
  a meaningful set of drivers to boot an unmodified kernel on the
  Samsung ARM-based Chromebooks."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: exynos: defconfig update
  ARM: SAMSUNG: Add names to fimd0 IRQ resources
  ARM: EXYNOS: fix software reset logic for EXYNOS5440 SOC
  ARM: EXYNOS: Fix support of Exynos4210 rev0 SoC
  ARM: dts: Enabling samsung-usb2phy driver for exynos5250
2013-05-29 19:24:55 +09:00
Olof Johansson
da9d0fbf5e ARM: exynos: defconfig update
This turns on a number of configs that are useful on the Chromebook, but also
good to have on in general:

* USB host and MMC drivers(!)
* I2C GPIO arbitration driver
* CYAPA trackpad driver
* simplefb
* CROS EC and keyboard drivers
* S5M8767 driver
* MAX77686 drivers
* MAX8997 driver
* DEVTMPFS + mount
* DM_CRYPT (as module)
* CRYPTOLOOP
* HIGHMEM
* PRINTK timestamps

This also turns off DEBUG_LL, and switches the hardcoded Samsung lowlevel
uart to uart 3 (which is only used to show the "uncompressing kernel"
message at boot, it seems).

Signed-off-by: Olof Johansson <olof@lixom.net>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
2013-05-28 17:21:41 -07:00
Linus Torvalds
30a9e50143 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This push fixes a crash in the new sha256_ssse3 driver as well as a
  DMA setup/teardown bug in caam"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: sha256_ssse3 - fix stack corruption with SSSE3 and AVX implementations
  crypto: caam - fix inconsistent assoc dma mapping direction
2013-05-28 10:09:38 -07:00
Linus Torvalds
3c48dd4964 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k fixes from Geert Uytterhoeven:
 - futex support that I had missed before,
 - A long-overdue update of the m68k defconfigs.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Update defconfigs for v3.9
  m68k: implement futex.h to support userspace robust futexes and PI mutexes
2013-05-28 09:23:23 -07:00
Linus Torvalds
6e7d43f494 Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze fixes from Michal Simek:
 "One patch fix futex support and my patches fix warnings which were
  reported by Geert's regression testing"

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Reversed logic in futex cmpxchg
  microblaze: Use proper casting for inb/inw/inl in io.h
  microblaze: Initialize temp variable to remove compilation warning
2013-05-28 09:21:13 -07:00
Geert Uytterhoeven
37c14e83ee m68k: Update defconfigs for v3.9
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-05-28 10:22:06 +02:00
Jussi Kivilinna
de614e561b crypto: sha256_ssse3 - fix stack corruption with SSSE3 and AVX implementations
The _XFER stack element size was set too small, 8 bytes, when it needs to be
16 bytes. As _XFER is the last stack element used by these implementations,
the 16 byte stores with 'movdqa' corrupt the stack where the value of register
%r12 is temporarily stored. As these implementations align the stack pointer
to 16 bytes, this corruption did not happen every time.

Patch corrects this issue.

Reported-by: Julian Wollrath <jwollrath@web.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Tested-by: Julian Wollrath <jwollrath@web.de>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-05-28 13:46:47 +08:00
Olof Johansson
81c0d9047f Fixes following for v3.10
- to get usb2 working on the Chromebook with adding the
   usb phy node for usb2 on exynos5250
 - supporting exynos4210 rev0 SoC
 - exynos5440 restart applying only to powered-on domains
 - drm-exynos probe failure with adding resource names to
   fimd0 platform device
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Merge tag 'samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

From Kukjin Kim:

Fixes following for v3.10
- to get usb2 working on the Chromebook with adding the
  usb phy node for usb2 on exynos5250
- supporting exynos4210 rev0 SoC
- exynos5440 restart applying only to powered-on domains
- drm-exynos probe failure with adding resource names to
  fimd0 platform device

* tag 'samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: SAMSUNG: Add names to fimd0 IRQ resources
  ARM: EXYNOS: fix software reset logic for EXYNOS5440 SOC
  ARM: EXYNOS: Fix support of Exynos4210 rev0 SoC
  ARM: dts: Enabling samsung-usb2phy driver for exynos5250
2013-05-27 19:26:30 -07:00
Tomasz Figa
b134dc3fea ARM: EXYNOS: Fix EINT wake-up mask configuration when pinctrl is used
On DT-enabled systems pinctrl-exynos driver is responsible for handling
of wake-up EINT interrupts. This patch adjusts wake-up mask
configuration code to take wake-up mask value from pinctrl-exynos driver
on DT-enabled systems.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-27 15:37:08 +02:00
Meyer, Kirk
f6a12a7d0b microblaze: Reversed logic in futex cmpxchg
futex_atomic_cmpxchg_inatomic exchanged if the values were
unequal rather than equal. This caused incorrect behavior
of robust futexes.

Signed-off-by: Kirk Meyer <kirk.meyer@sencore.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-05-27 12:29:35 +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
Tomasz Figa
15f504f0c2 ARM: SAMSUNG: Add names to fimd0 IRQ resources
Since commit 1977e6d8 (drm/exynos: change the method for getting the
interrupt) the Exynos DRM FIMD driver requires IRQ resources to be
named. This patch fixes probe failure in non-DT cases by adding
appropriate resource names to fimd0 platform device.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-05-25 06:49:43 +09:00
Jungseok Lee
1ba830c999 ARM: EXYNOS: fix software reset logic for EXYNOS5440 SOC
This patch fixes software reset logic. Software reset applies only to
powered-on domains in SOC because software reset to all domains causes
reboot failure.

Signed-off-by: Jungseok Lee <jays.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-05-25 06:43:00 +09:00
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
Tomasz Figa
68a433f18c ARM: EXYNOS: Fix support of Exynos4210 rev0 SoC
This patch extends exynos_init_time() function to handle Exynos4210
rev0 SoC, which differs in availability of system timers and needs
different clocksource initialization.

This makes it possible to use exynos_init_time() function as init_time
callback for all Exynos-based boards, including Universal_C210, which
originally had to use samsung_timer_init().

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-05-25 06:27:38 +09:00
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
Boris BREZILLON
f6d35d67d0 ARM: at91/dt: fix macb pinctrl_macb_rmii_mii_alt definition
The PA24 pin is wrongly assigned to peripheral B.
In the current config there is 2 ETX3 pins (PA11 and PA24) and
no ETXER pin (PA22).

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable <stable@vger.kernel.org> # 3.8+
2013-05-24 10:53:51 +02:00
Jean-Christophe PLAGNIOL-VILLARD
029efddab6 ARM: at91: at91sam9n12: move external irq declatation to DT
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-05-24 10:53:50 +02:00
Brian King
f1dd153121 powerpc/pseries: Make 32-bit MSI quirk work on systems lacking firmware support
Recent commit e61133dda4 added support
for a new firmware feature to force an adapter to use 32 bit MSIs.
However, this firmware is not available for all systems. The hack below
allows devices needing 32 bit MSIs to work on these systems as well.
It is careful to only enable this on Gen2 slots, which should limit
this to configurations where this hack is needed and tested to work.

[Small change to factor out the hack into a separate function -- BenH]

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:16:54 +10:00
Benjamin Herrenschmidt
83920c498e powerpc/powernv: Build a zImage.epapr
The zImage.epapr wrapper allows to use zImages when booting via a flat
device-tree which can be used on powernv.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:13:46 +10:00
Benjamin Herrenschmidt
b72c1f6514 powerpc: Make radeon 32-bit MSI quirk work on powernv
This moves the quirk itself to pci_64.c as to get built on all ppc64
platforms (the only ones with a pci_dn), factors the two implementations
of get_pdn() into a single pci_get_dn() and use the quirk to do 32-bit
MSIs on IODA based powernv platforms.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:13:45 +10:00
Michael Ellerman
59affcd3e4 powerpc: Context switch more PMU related SPRs
In commit 9353374 "Context switch the new EBB SPRs" we added support for
context switching some new EBB SPRs. However despite four of us signing
off on that patch we missed some. To be fair these are not actually new
SPRs, but they are now potentially user accessible so need to be context
switched.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:13:45 +10:00
Benjamin Herrenschmidt
605e44d6e6 powerpc/powernv: Fix condition for when to invalidate the TCE cache
We use two flags, one to indicate an invalidation is needed after
creating a new entry and one to indicate an invalidation is needed
after removing an entry. However we were testing the wrong flag
in the remove case.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:13:44 +10:00
Benjamin Herrenschmidt
bee7dd9c5f powerpc/pci: Fix bogus message at boot about empty memory resources
The message is only meant to be displayed if resource 0 is empty,
but was displayed if any is.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:13:44 +10:00
Benjamin Herrenschmidt
8fc1f5d7ef powerpc: Fix TLB cleanup at boot on POWER8
The TLB has 512 congruence classes (2048 entries 4 way set associative)
while P7 had 128

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-24 18:13:44 +10:00
Linus Torvalds
b91fd4d5aa PCI updates for v3.10:
Moorestown
       Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
   Hotplug
       PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check
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Merge tag 'pci-v3.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Here are some more fixes for v3.10.  The Moorestown update broke Intel
  Medfield devices, so I reverted it.  The acpiphp change fixes a
  regression: we broke hotplug notifications to host bridges when we
  split acpiphp into the host-bridge related part and the
  endpoint-related part.

  Moorestown
      Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
  Hotplug
      PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check"

* tag 'pci-v3.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
  PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check
2013-05-23 13:50:53 -07:00