Commit Graph

54365 Commits

Author SHA1 Message Date
Linus Torvalds
7921127e29 Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: smp_on_up: allow non-ARM SMP processors
  ARM: io: ensure inb/outb() et.al. are properly ordered on ARMv6+
  ARM: initrd: disable initrd if passed address overlaps reserved region
  ARM: footbridge: fix debug macros
  ARM: mmci: round down the bytes transferred on error
  ARM: mmci: complete the transaction on error
  ARM: 6642/1: mmci: calculate remaining bytes at error correctly
2011-02-01 08:30:31 +10:00
Linus Torvalds
35a8524ffe Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  arch/arm/mach-omap2/dma.c: Convert IS_ERR result to PTR_ERR
  arm: omap2: mux: fix compile warning
  omap1: Simplify use of omap_irq_flags
  omap2+: Fix unused variable warning for omap_irq_base
2011-02-01 08:27:55 +10:00
Russell King
e98ff0f55a ARM: smp_on_up: allow non-ARM SMP processors
Allow non-ARM SMP processors to use the SMP_ON_UP feature.  CPUs
supporting SMP must have the new CPU ID format, so check for this first.
Then check for ARM11MPCore, which fails the MPIDR check.  Lastly check
the MPIDR reports multiprocessing extensions and that the CPU is part of
a multiprocessing system.

Cc: <stable@kernel.org>
Reported-and-Tested-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31 21:48:53 +00:00
Russell King
c1928022ef ARM: io: ensure inb/outb() et.al. are properly ordered on ARMv6+
Ensure that the ISA/PCI IO space accessors are properly ordered on
ARMv6+ architectures.  These should always be ordered with respect to
all other accesses.

This also fixes __iormb() and __iowmb() not being visible to ioread/
iowrite if a platform defines its own MMIO accessors.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31 10:53:42 +00:00
Russell King
b0a2679d27 ARM: initrd: disable initrd if passed address overlaps reserved region
Disable the initrd if the passed address already overlaps the reserved
region.  This avoids oopses on Netwinders when NeTTrom tells the kernel
that an initrd is located at mem+4MB, but this overlaps the BSS,
resulting in the kernels in-use BSS being freed.

This should be applied to v2.6.37-stable.

Cc: <stable@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31 10:53:41 +00:00
Russell King
5f2c1b30c7 ARM: footbridge: fix debug macros
0ea1293 (arm: return both physical and virtual addresses from addruart)
changed the way the 'addruart' worked, making it return both the virt
and phys addresses.  Unfortunately, for footbridge, these were reversed.
Fix that.  Tested on Netwinder.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31 10:53:39 +00:00
Linus Torvalds
ef9f2fa17f Merge branch 'for-linus' of git://android.git.kernel.org/kernel/tegra
* 'for-linus' of git://android.git.kernel.org/kernel/tegra:
  ARM: tegra: clock: Add forward reference to struct clk
  ARM: tegra: irq: Rename gic pointers to avoid conflicts
  arm/tegra: Fix tegra irq_data conversion
2011-01-31 12:49:26 +10:00
Linus Torvalds
1f0324caef Merge branch 'stable/bug-fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug-fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/setup: Route halt operations to safe_halt pvop.
  xen/e820: Guard against E820_RAM not having page-aligned size or start.
  xen/p2m: Mark INVALID_P2M_ENTRY the mfn_list past max_pfn.
2011-01-28 12:24:34 +10:00
Julia Lawall
0e6d8cad44 arch/arm/mach-omap2/dma.c: Convert IS_ERR result to PTR_ERR
This code elsewhere returns a negative constant to an indicate an error,
while IS_ERR returns the result of a >= operation.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x;
@@

 if (...) { ...
- return IS_ERR(x);
+ return PTR_ERR(x);
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-27 16:25:35 -08:00
Felipe Balbi
afb7d7099e arm: omap2: mux: fix compile warning
Commit 8419fdbaf2
(omap2+: Add omap_mux_get_by_name) introduced the following
compile warning:

arch/arm/mach-omap2/mux.c: In function '_omap_mux_get_by_name':
arch/arm/mach-omap2/mux.c:163:17: warning: 'found_mode' may be used
uninitialized in this function

Signed-off-by: Felipe Balbi <balbi@ti.com>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-27 16:22:55 -08:00
Tony Lindgren
efe318a333 omap1: Simplify use of omap_irq_flags
Commit 03a9e51261
(omap1: Use asm_irq_flags for entry-macro.S) added support
for multi-omap builds with addition of the omap_irq_flags.

Commit 9f9605c2ed
(omap2+: Fix unused variable warning for omap_irq_base)
simplified omap2+ entry-macro.S by moving omap_irq_flags
out of entry-macro.S.

Simplify omap1 entry-macro.S in a similar way to keep the
code consistent. Based on a similar earlier patch for omap2+
by Russell King <rmk+kernel@arm.linux.org.uk>.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-27 15:52:16 -08:00
Russell King
9f9605c2ed omap2+: Fix unused variable warning for omap_irq_base
Commit 5d190c4010
(omap2+: Initialize omap_irq_base for entry-macro.S from
platform code) simplified the handling of omap_irq_base
for multi-omap builds. However, this patch also introduced
a build warning for !MULTI_OMAP2 builds:

arch/arm/mach-omap2/io.c: In function 'omap_irq_base_init':
arch/arm/mach-omap2/io.c:322: warning: unused variable 'omap_irq_base'

Fix this by removing the ifdef. Also simplify things further
by moving omap_irq_base out of entry-macro.S.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-27 15:33:47 -08:00
Linus Torvalds
f7b548fa3d Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  percpu, x86: Fix percpu_xchg_op()
  x86: Remove left over system_64.h
  x86-64: Don't use pointer to out-of-scope variable in dump_trace()
2011-01-28 06:43:41 +10:00
Linus Torvalds
785eb10b9f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/avr32-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/avr32-2.6:
  avr32: add missing include causing undefined pgtable_page_* references
2011-01-28 06:32:05 +10:00
Stefano Stabellini
23febeddbe xen/setup: Route halt operations to safe_halt pvop.
With this patch, the cpuidle driver does not load and
does not issue the mwait operations. Instead the hypervisor
is doing them (b/c we call the safe_halt pvops call).

This fixes quite a lot of bootup issues wherein the user had
to force interrupts for the continuation of the bootup.

Details are discussed in:

http://lists.xensource.com/archives/html/xen-devel/2011-01/msg00535.html

[v2: Wrote the commit description]

Reported-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Tested-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-27 12:00:24 -05:00
Stefano Stabellini
7cb31b752c xen/e820: Guard against E820_RAM not having page-aligned size or start.
Under Dell Inspiron 1525, and Intel SandyBridge SDP's the
BIOS e820 RAM is not page-aligned:

[   0.000000]  Xen: 0000000000100000 - 00000000df66d800 (usable)

We were not handling that and ended up setting up a pagetable
that included up to df66e000 with the disastrous effect that when

        memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t));

tried to clear the page it would crash at the 2K mark.

Initially reported by Michael Young @
http://lists.xensource.com/archives/html/xen-devel/2011-01/msg00108.html

The fix is to page-align the size and also take into consideration
the start of the E820 (in case that is not page-aligned either). This
fixes the bootup failure on those affected machines.

This patch is a rework of the Micheal A Young initial patch and
considers the case if the start is not page-aligned.

Reported-by: Michael A Young <m.a.young@durham.ac.uk>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Michael A Young <m.a.young@durham.ac.uk>
2011-01-27 10:49:35 -05:00
Stefan Bader
cf04d120d9 xen/p2m: Mark INVALID_P2M_ENTRY the mfn_list past max_pfn.
In case the mfn_list does not have enough entries to fill
a p2m page we do not want the entries from max_pfn up to
the boundary to be filled with unknown values. Hence
set them to INVALID_P2M_ENTRY.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-27 10:49:34 -05:00
Colin Cross
b48b5f5156 ARM: tegra: clock: Add forward reference to struct clk
Signed-off-by: Colin Cross <ccross@android.com>
2011-01-26 21:28:06 -08:00
Colin Cross
cc939754db ARM: tegra: irq: Rename gic pointers to avoid conflicts
A future patch will export gic_mask_irq and gic_unmask_irq.
Rename the pointers in arch/arm/mach-tegra/irq.c to avoid
a compile error.

Signed-off-by: Colin Cross <ccross@android.com>
2011-01-26 21:28:06 -08:00
Grant Likely
867996cb4f arm/tegra: Fix tegra irq_data conversion
Commit 37337a8d5e, "ARM: tegra: irq_data
conversion." missed changing one reference to 'irq' in the function
tegra_gpio_irq_set_type().  This patch fixes the build error.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-01-26 21:28:06 -08:00
Hans-Christian Egtvedt
6cb8e872c8 avr32: add missing include causing undefined pgtable_page_* references
This patch adds the linux/mm.h header file to the AVR32 arch pgalloc.c
implementation to fix the undefined reference to pgtable_page_ctor() and
pgtable_page_dtor().

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
2011-01-26 12:35:15 +01:00
Eric Dumazet
889a7a6a5d percpu, x86: Fix percpu_xchg_op()
These recent percpu commits:

  2485b6464cf8: x86,percpu: Move out of place 64 bit ops into X86_64 section
  8270137a0d50: cpuops: Use cmpxchg for xchg to avoid lock semantics

Caused this 'perf top' crash:

 Kernel panic - not syncing: Fatal exception in interrupt
 Pid: 0, comm: swapper Tainted: G     D
 2.6.38-rc2-00181-gef71723 #413 Call Trace: <IRQ> [<ffffffff810465b5>]
    ? panic
    ? kmsg_dump
    ? kmsg_dump
    ? oops_end
    ? no_context
    ? __bad_area_nosemaphore
    ? perf_output_begin
    ? bad_area_nosemaphore
    ? do_page_fault
    ? __task_pid_nr_ns
    ? perf_event_tid
    ? __perf_event_header__init_id
    ? validate_chain
    ? perf_output_sample
    ? trace_hardirqs_off
    ? page_fault
    ? irq_work_run
    ? update_process_times
    ? tick_sched_timer
    ? tick_sched_timer
    ? __run_hrtimer
    ? hrtimer_interrupt
    ? account_system_vtime
    ? smp_apic_timer_interrupt
    ? apic_timer_interrupt
 ...

Looking at assembly code, I found:

list = this_cpu_xchg(irq_work_list, NULL);

gives this wrong code : (gcc-4.1.2 cross compiler)

ffffffff810bc45e:
	mov    %gs:0xead0,%rax
	cmpxchg %rax,%gs:0xead0
	jne    ffffffff810bc45e <irq_work_run+0x3e>
	test   %rax,%rax
	je     ffffffff810bc4aa <irq_work_run+0x8a>

Tell gcc we dirty eax/rax register in percpu_xchg_op()

Compiler must use another register to store pxo_new__

We also dont need to reload percpu value after a jump,
since a 'failed' cmpxchg already updated eax/rax

Wrong generated code was :
	xor     %rax,%rax   /* load 0 into %rax */
1:	mov     %gs:0xead0,%rax
	cmpxchg %rax,%gs:0xead0
	jne     1b
	test    %rax,%rax

After patch :

	xor     %rdx,%rdx   /* load 0 into %rdx */
	mov     %gs:0xead0,%rax
1:	cmpxchg %rdx,%gs:0xead0
	jne     1b:
	test    %rax,%rax

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <1295973114.3588.312.camel@edumazet-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-26 08:10:49 +01:00
Yinghai Lu
9a57c3e487 x86: Remove left over system_64.h
Left-over from the x86 merge ...

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D3E23D1.7010405@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-26 08:05:58 +01:00
Linus Torvalds
6fb1b30425 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - pass touch resolution to clients through input_absinfo
  Input: wacom - add 2 Bamboo Pen and touch models
  Input: sysrq - ensure sysrq_enabled and __sysrq_enabled are consistent
  Input: sparse-keymap - fix KEY_VSW handling in sparse_keymap_setup
  Input: tegra-kbc - add tegra keyboard driver
  Input: gpio_keys - switch to using request_any_context_irq
  Input: serio - allow registered drivers to get status flag
  Input: ct82710c - return proper error code for ct82c710_open
  Input: bu21013_ts - added regulator support
  Input: bu21013_ts - remove duplicate resolution parameters
  Input: tnetv107x-ts - don't treat NULL clk as an error
  Input: tnetv107x-keypad - don't treat NULL clk as an error

Fix up trivial conflicts in drivers/input/keyboard/Makefile due to
additions of tc3589x/Tegra drivers
2011-01-26 16:31:44 +10:00
Torben Hohn
ac751efa6a console: rename acquire/release_console_sem() to console_lock/unlock()
The -rt patches change the console_semaphore to console_mutex.  As a
result, a quite large chunk of the patches changes all
acquire/release_console_sem() to acquire/release_console_mutex()

This commit makes things use more neutral function names which dont make
implications about the underlying lock.

The only real change is the return value of console_trylock which is
inverted from try_acquire_console_sem()

This patch also paves the way to switching console_sem from a semaphore to
a mutex.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert]
Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: Thomas Gleixner <tglx@tglx.de>
Cc: Greg KH <gregkh@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-26 10:50:06 +10:00
Andrea Arcangeli
cacf061c5e thp: fix PARAVIRT x86 32bit noPAE
This fixes TRANSPARENT_HUGEPAGE=y with PARAVIRT=y and HIGHMEM64=n.

The #ifdef that this patch removes was erratically introduced to fix a
build error for noPAE (where pmd.pmd doesn't exist).  So then the kernel
built but it failed at runtime because set_pmd_at was a noop.  This will
correct it by enabling set_pmd_at for noPAE mode too.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: werner <w.landgraf@ru.ru>
Reported-by: Minchan Kim <minchan.kim@gmail.com>
Tested-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-26 10:49:57 +10:00
Linus Torvalds
6663050edd Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ALSA: AACI: fix timeout duration
  ALSA: AACI: fix timeout condition checking
  ARM: 6636/1: ep93xx: default multiplexed gpio ports to gpio mode
  ARM: 6637/1: Make the argument to virt_to_phys() "const volatile"
  ARM: twd: ensure timer reload is reprogrammed on entry to periodic mode
  ARM: 6635/2: Configure reference clock for Versatile Express timers
  ARM: versatile: name configuration options after actual board names
  ARM: realview: name configuration options after actual board names
  ARM: realview,vexpress: fix section mismatch warning for pen_release
  ARM: 6632/3: mmci: stop using the blockend interrupts
2011-01-26 09:04:18 +10:00
Linus Torvalds
01ed875a12 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/amiga: Fix "debug=mem"
  m68k/atari: Rename "scc" to "atari_scc"
  m68k: Uninline strchr()
2011-01-26 09:02:55 +10:00
Linus Torvalds
8348ad7c17 Merge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  ARM: mach-shmobile: AG5EVM LCDC / MIPI-DSI platform data
  ARM: mach-shmobile: sh73a0 CPGA fix for PLL CFG bit
  ARM: mach-shmobile: mackerel: clarify shdi/mmcif switch settings
  ARM: mach-shmobile: sh73a0 CPGA fix for IrDA MSTP
  ARM: mach-shmobile: sh73a0 CPGA fix for FRQCRA M3
  ARM: mach-shmobile: remove sh7367 on-chip set_irq_type()
  ARM: mach-shmobile: sh7372 INTCS MFIS2 interrupt update
  ARM: mach-shmobile: ag5evm: Add IrDA support
  ARM: mach-shmobile: clock-sh7372: fixup pllc2 set_rate
  mmc: sh_mmcif: Convert to __raw_xxx() I/O accessors.
  ARM: mach-shmobile: ag5evm requires GPIOLIB
  ARM: mach-shmobile: fix cpu_base of gic_init() on sh73a0
2011-01-26 09:02:14 +10:00
Linus Torvalds
fd3830b379 Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Fix build of sh7750 base boards
  sh: update INTC to clear IRQ sense valid flag
  sh: Fix sh build failure when CONFIG_SFC=m
  sh: fix MSIOF0 SPI on ecovec: it conflicts with VOU
  sh: support XZ-compressed kernel.
  sh: Fix up breakage from asm-generic/pgtable.h changes.
2011-01-26 09:00:17 +10:00
Hartley Sweeten
fd015480c2 ARM: 6636/1: ep93xx: default multiplexed gpio ports to gpio mode
The EP93xx C and D GPIO ports are multiplexed with the Keypad Interface
peripheral.  At power-up they default into non-GPIO mode with the Key
Matrix controller enabled so these ports are unusable for GPIO.  Note
that the Keypad Interface peripheral is only available in the EP9307,
EP9312, and EP9315 processor variants.

The keypad support will clear the DeviceConfig bits appropriately to
enable the Keypad Interface when the driver is loaded.  And, when the
driver is unloaded it will set the bits to return the ports to GPIO mode.

To make these ports available for GPIO after power-up on all EP93xx
processor variants, set the KEYS and GONK bits in the DeviceConfig
register.

Similarly, the E, G, and H ports are multiplexed with the IDE Interface
peripheral.  At power-up these also default into non-GPIO mode.  Note
that the IDE peripheral is only available in the EP9312 and EP9315
processor variants.

Since an IDE driver is not even available in mainline, set the EONIDE,
GONIDE, and HONIDE bits in the DeviceConfig register so that these
ports will be available for GPIO use after power-up.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 21:18:04 +00:00
Catalin Marinas
05b112ff98 ARM: 6637/1: Make the argument to virt_to_phys() "const volatile"
Changing the virt_to_phys() argument to "const volatile void *" avoids
compiler warnings in some situations where this function is used.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 21:18:03 +00:00
Russell King
03399c1cb4 ARM: twd: ensure timer reload is reprogrammed on entry to periodic mode
Ensure that the twd timer reload value is reprogrammed each time we
enter periodic mode.  This ensures that the reload value is always
reset correctly.

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 21:17:58 +00:00
Pawel Moll
baaece2245 ARM: 6635/2: Configure reference clock for Versatile Express timers
Timers on Versatile Express mainboard are used as system clock/event
sources. Driver assumes that they are clocked with 1MHz signal.
Old V2M firmware apparently configured it by default, but on newer
boards one can observe that "sleep 1" command takes over 30 seconds
to finish, as the timers are fed with 32kHz instead...

This patch performs required magic and also removes code clearing
timer's control registers, as exactly the same operations are
performed by the timer driver few jiffies later.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 16:18:33 +00:00
Russell King
e5310f611d ARM: versatile: name configuration options after actual board names
Update the option text to those which appear on the front of the
appropriate board user guides.  This gives consistent board naming, and
makes it obvious which option is for which platform.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 15:08:02 +00:00
Russell King
d2a1c9ad78 ARM: realview: name configuration options after actual board names
As no one seems to really know which configuration options tie up with
which boards, I thought I'd do some investigation and try to work it
out.  After discussion with some folk in linaro, I think I have this
nailed.

The names are updated to use the name on the front of the appropriate
board user guide for the various baseboards, which I've taken to be
the official name for each board.

I haven't significantly updated the descriptions for the tiles as that
is even less clear - as far as I can see on ARMs website, there is no
Cortex-A9 tile for Realview EB - only ARM11MPCore, ARM1156T2F-S,
ARM1176TZF-S and Cortex-R4F.  So exactly what this 'Multicore Cortex-A9
Tile' is...

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 15:08:01 +00:00
Russell King
ec15038f2b ARM: realview,vexpress: fix section mismatch warning for pen_release
Fix two section mismatch warnings in the platform SMP bringup code for
Realview and Versatile Express:

WARNING: arch/arm/mach-realview/built-in.o(.text+0x8ac): Section mismatch in reference from the function write_pen_release() to the variable .cpuinit.data:pen_release
The function write_pen_release() references
the variable __cpuinitdata pen_release.
This is often because write_pen_release lacks a __cpuinitdata
annotation or the annotation of pen_release is wrong.

WARNING: arch/arm/mach-vexpress/built-in.o(.text+0x7b4): Section mismatch in reference from the function write_pen_release() to the variable .cpuinit.data:pen_release
The function write_pen_release() references
the variable __cpuinitdata pen_release.
This is often because write_pen_release lacks a __cpuinitdata
annotation or the annotation of pen_release is wrong.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 15:08:01 +00:00
Nobuhiro Iwamatsu
75a9fa0a76 sh: Fix build of sh7750 base boards
Renamed platform_register_device to platform_device_register.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-01-25 15:03:15 +09:00
Jesper Juhl
2e5aa6824d x86-64: Don't use pointer to out-of-scope variable in dump_trace()
In arch/x86/kernel/dumpstack_64.c::dump_trace() we have this code:

...
  		if (!stack) {
  			unsigned long dummy;
  			stack = &dummy;
  			if (task && task != current)
  				stack = (unsigned long *)task->thread.sp;
  		}

  		bp = stack_frame(task, regs);
  		/*
  		 * Print function call entries in all stacks, starting at the
  		 * current stack address. If the stacks consist of nested
  		 * exceptions
  		 */
  		tinfo = task_thread_info(task);

  		for (;;) {
  			char *id;
  			unsigned long *estack_end;
  			estack_end = in_exception_stack(cpu, (unsigned long)stack,
  							&used, &id);
...

You'll notice that we assign to 'stack' the address of the variable
'dummy' which is only in-scope inside the 'if (!stack)'. So when we later
access stack (at the end of the above, and assuming we did not take the
'if (task && task != current)' branch) we'll be using the address of a
variable that is no longer in scope. I believe this patch is the proper
fix, but I freely admit that I'm not 100% certain.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
LKML-Reference: <alpine.LNX.2.00.1101242232590.10252@swampdragon.chaosbits.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-01-24 13:46:15 -08:00
Linus Torvalds
34686fe689 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap: DMA: clear interrupt status correctly
  OMAP3: Devkit8000: Fix tps65930 pullup/pulldown configuration
  arm: omap3: cm-t3517: minor comment fix
  arm: omap3: cm-t3517: rtc fix
  omap1: Fix sched_clock implementation when both MPU timer and 32K timer are used
  omap1: Fix booting for 15xx and 730 with omap1_defconfig
  omap1: Fix sched_clock for the MPU timer
  OMAP: PRCM: remove duplicated headers
  OMAP4: clockdomain: bypass unimplemented wake-up dependency functions on OMAP4
  OMAP: counter_32k: init clocksource as part of machine timer init
2011-01-25 05:29:49 +10:00
Linus Torvalds
500d85ce39 Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Fix time function double declaration with glibc
  perf tools: Fix build by checking if extra warnings are supported
  perf tools: Fix build when using gcc 3.4.6
  perf tools: Add missing header, fixes build
  perf tools: Fix 64 bit integer format strings
  perf test: Fix build on older glibcs
  perf: perf_event_exit_task_context: s/rcu_dereference/rcu_dereference_raw/
  perf test: Use cpu_map->[cpu] when setting affinity
  perf symbols: Fix annotation of thumb code
  perf: Annotate cpuctx->ctx.mutex to avoid a lockdep splat
  powerpc, perf: Fix frequency calculation for overflowing counters (FSL version)
  perf: Fix perf_event_init_task()/perf_event_free_task() interaction
  perf: Fix find_get_context() vs perf_event_exit_task() race
2011-01-25 05:26:47 +10:00
Linus Torvalds
4398f31ca7 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix jump label with RO/NX module protection crash
  x86, hotplug: Fix powersavings with offlined cores on AMD
  x86, mcheck, therm_throt.c: Export symbol platform_thermal_notify to allow coretemp to handler intr
  x86: Use asm-generic/cacheflush.h
  x86: Update CPU cache attributes table descriptors
2011-01-25 05:24:12 +10:00
matthieu castet
8969691343 x86: Fix jump label with RO/NX module protection crash
If we use jump table in module init, there are marked
as removed in __jump_table section after init is done.

But we already applied ro permissions on the module, so
we can't modify a read only section (crash in
remove_jump_label_module_init).

Make the __jump_table section rw.

Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Cc: Xiaotian Feng <xtfeng@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Siarhei Liakh <sliakh.lkml@gmail.com>
Cc: Xuxian Jiang <jiang@cs.ncsu.edu>
Cc: James Morris <jmorris@namei.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dave Jones <davej@redhat.com>
Cc: Kees Cook <kees.cook@canonical.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <4D3C3F20.7030203@free.fr>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-23 16:12:45 +01:00
Geert Uytterhoeven
5df1abdbd3 m68k/amiga: Fix "debug=mem"
`debug=mem' on Amiga has been broken for a while.
early_param() processing is done very/too early, i.e. before
amiga_identify() / amiga_chip_init(), causing amiga_savekmsg_setup() not
to find any Chip RAM.

As we don't plan to free this memory anyway, just steal it from the initial
Chip RAM memory block instead.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-01-23 11:24:42 +01:00
Geert Uytterhoeven
de339e4b79 m68k/atari: Rename "scc" to "atari_scc"
It's a way too generic name for a global #define and conflicts with a variable
with the same name, causing build errors like:

| drivers/staging/brcm80211/brcmfmac/../util/siutils.c: In function ‘_si_clkctl_cc’:
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1364: error: expected identifier or ‘(’ before ‘volatile’
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1364: error: expected ‘)’ before ‘(’ token
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1421: error: incompatible types in assignment
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1422: error: invalid operands to binary &
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1423: error: invalid operands to binary &
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1424: error: invalid operands to binary |
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: incompatible type for argument 4 of ‘bcmsdh_reg_write’
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1428: error: invalid operands to binary &
| make[8]: *** [drivers/staging/brcm80211/brcmfmac/../util/siutils.o] Error 1

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-01-23 11:24:35 +01:00
Geert Uytterhoeven
f9b07897c6 m68k: Uninline strchr()
Some versions of gcc replace calls to strstr() with single-character
"needle" string parameters by calls to strchr() behind our back.

If strchr() is defined as an inline function, this causes linking errors
like

	ERROR: "strchr" [drivers/target/target_core_mod.ko] undefined!

As m68k is the only architecture that has an inline strchr() and this
inline version is not an optimized asm version, uninline strchr() and use
the standard out-of-line C version in lib/string.c instead.

This also decreases the defconfig/allmodconfig kernel image sizes by a few
hundred bytes.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-01-22 19:32:54 +01:00
Borislav Petkov
93789b32db x86, hotplug: Fix powersavings with offlined cores on AMD
ea53069231 made a CPU use monitor/mwait
when offline. This is not the optimal choice for AMD wrt to powersavings
and we'd prefer our cores to halt (i.e. enter C1) instead. For this, the
same selection whether to use monitor/mwait has to be used as when we
select the idle routine for the machine.

With this patch, offlining cores 1-5 on a X6 machine allows core0 to
boost again.

[ hpa: putting this in urgent since it is a (power) regression fix ]

Reported-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: stable@kernel.org # 37.x
Cc: H. Peter Anvin <hpa@linux.intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Venkatesh Pallipadi <venki@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.hl>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1295534572-10730-1-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-01-21 18:14:54 -08:00
Linus Torvalds
ebe0d80507 Merge branch 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  x86,percpu: Move out of place 64 bit ops into X86_64 section
2011-01-21 13:43:21 -08:00
Linus Torvalds
0f5c2ac58f Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits)
  um: Use generic irq Kconfig
  tile: Use generic irq Kconfig
  sparc: Use generic irq Kconfig
  score: Use generic irq Kconfig
  powerpc: Use generic irq Kconfig
  parisc: Use generic irq Kconfig
  mn10300: Use generic irq Kconfig
  microblaze: Use generic irq Kconfig
  m68knommu: Use generic irq Kconfig
  ia64: Use generic irq Kconfig
  frv: Use generic irq Kconfig
  blackfin: Use generic irq Kconfig
  alpha: Use generic irq Kconfig
  genirq: Remove __do_IRQ
  m32r: Convert to generic irq Kconfig
  m32r: Convert usrv platform irq handling
  m32r: Convert opsput_lcdpld irq chip
  m32r: Convert opsput lanpld irq chip
  m32r: Convert opsput pld irq chip
  m32r: Convert opsput irq chip
  ...
2011-01-21 13:38:26 -08:00
Linus Torvalds
cfd74486ea Merge branch 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: p2m: correctly initialize partial p2m leaf
  xen: fix non-ANSI function warning in irq.c
2011-01-21 13:35:10 -08:00