linux-stable.git/arch/arm, branch v3.9.4

ARM: EXYNOS5: Fix kernel dump in AFTR idle mode

2013-05-19T18:38:41+00:00

commit 088584618836b159947bc4ab5011a5cf1f081a62 upstream.

The kernel crashes while resuming from AFTR idle mode. It happens
because L2 cache was not going into retention state.

This patch configures the USE_RETENTION bit of ARM_L2_OPTION register
so that it does not depend on MANUAL_L2RSTDISABLE_CONTROL of
ARM_COMMON_OPTION register for L2RSTDISABLE signal.

Signed-off-by: Inderpal Singh 
Tested-by: Chander Kashyap 
Signed-off-by: Olof Johansson 
Signed-off-by: Jonghwan Choi 
Signed-off-by: Greg Kroah-Hartman

ARM: 7720/1: ARM v6/v7 cmpxchg64 shouldn't clear upper 32 bits of the old/new value

2013-05-19T18:38:26+00:00

commit 6eabb3301b1facee669d9938f7c5a0295c21d71d upstream.

The implementation of cmpxchg64() for the ARM v6 and v7 architecture
casts parameter 2 and 3 (the old and new 64bit values) to an unsigned
long before calling the atomic_cmpxchg64() function. This clears
the top 32 bits of the old and new values, resulting in the wrong
values being compare-exchanged. Luckily, this only appears to be used
for 64-bit sched_clock, which we don't (yet) have on ARM.

This bug was introduced by commit 3e0f5a15f500 ("ARM: 7404/1: cmpxchg64:
use atomic64 and local64 routines for cmpxchg64").

Acked-by: Will Deacon 
Signed-off-by: Jaccon Bastiaansen 
Signed-off-by: Russell King 
Signed-off-by: Greg Kroah-Hartman

ARM: OMAP: RX-51: change probe order of touchscreen and panel SPI devices

2013-05-19T18:38:11+00:00

commit e65f131a14726e5f1b880a528271a52428e5b3a5 upstream.

Commit 9fdca9df (spi: omap2-mcspi: convert to module_platform_driver)
broke the SPI display/panel driver probe on RX-51/N900. The exact cause is
not fully understood, but it seems to be related to the probe order. SPI
communication to the panel driver (spi1.2) fails unless the touchscreen
(spi1.0) has been probed/initialized before. When the omap2-mcspi driver
was converted to a platform driver, it resulted in that the devices are
probed immediately after the board registers them in the order they are
listed in the board file.

Fix the issue by moving the touchscreen before the panel in the SPI
device list.

The patch fixes the following failure:

[    1.260955] acx565akm spi1.2: invalid display ID
[    1.265899] panel-acx565akm display0: acx_panel_probe panel detect error
[    1.273071] omapdss CORE error: driver probe failed: -19

Tested-by: Sebastian Reichel 
Signed-off-by: Aaro Koskinen 
Cc: Pali Rohár 
Cc: Joni Lapilainen 
Cc: Tomi Valkeinen 
Cc: Felipe Balbi 
Signed-off-by: Tony Lindgren 
Signed-off-by: Greg Kroah-Hartman

xen/arm: actually pass a non-NULL percpu pointer to request_percpu_irq

2013-05-11T14:18:16+00:00

commit 2798ba7d19aed645663398a21ec4006bfdbb1ef3 upstream.

Signed-off-by: Stefano Stabellini 
Reviewed-by: Ian Campbell 
Signed-off-by: Greg Kroah-Hartman

mmc: at91/avr32/atmel-mci: fix DMA-channel leak on module unload

2013-05-08T03:33:14+00:00

commit 91cf54feecf815bec0b6a8d6d9dbd0e219f2f2cc upstream.

Fix regression introduced by commit 796211b7953 ("mmc: atmel-mci: add
pdc support and runtime capabilities detection") which removed the need
for CONFIG_MMC_ATMELMCI_DMA but kept the Kconfig-entry as well as the
compile guards around dma_release_channel() in remove(). Consequently,
DMA is always enabled (if supported), but the DMA-channel is not
released on module unload unless the DMA-config option is selected.

Remove the no longer used CONFIG_MMC_ATMELMCI_DMA option completely.

Signed-off-by: Johan Hovold 
Acked-by: Ludovic Desroches 
Signed-off-by: Chris Ball 
Signed-off-by: Greg Kroah-Hartman

arm: set the page table freeing ceiling to TASK_SIZE

2013-05-08T03:33:07+00:00

commit 104ad3b32d7a71941c8ab2dee78eea38e8a23309 upstream.

ARM processors with LPAE enabled use 3 levels of page tables, with an
entry in the top level (pgd) covering 1GB of virtual space.  Because of
the branch relocation limitations on ARM, the loadable modules are
mapped 16MB below PAGE_OFFSET, making the corresponding 1GB pgd shared
between kernel modules and user space.

If free_pgtables() is called with the default ceiling 0,
free_pgd_range() (and subsequently called functions) also frees the page
table shared between user space and kernel modules (which is normally
handled by the ARM-specific pgd_free() function).  This patch changes
defines the ARM USER_PGTABLES_CEILING to TASK_SIZE when CONFIG_ARM_LPAE
is enabled.

Note that the pgd_free() function already checks the presence of the
shared pmd page allocated by pgd_alloc() and frees it, though with
ceiling 0 this wasn't necessary.

Signed-off-by: Catalin Marinas 
Cc: Russell King 
Cc: Hugh Dickins 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

ARM: at91/trivial: typos in compatible property

2013-05-08T03:33:03+00:00

commit 2a5a461f179509142c661d79f878855798b85201 upstream.

- unneeded whitespace
- missing double quote

Acked-by: Jean-Christophe PLAGNIOL-VILLARD 
Signed-off-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

ARM: at91/trivial: fix model name for SAM9G15-EK

2013-05-08T03:33:03+00:00

commit 88fcb59a06556bf10eac97d7abb913cccea2c830 upstream.

Acked-by: Jean-Christophe PLAGNIOL-VILLARD 
Signed-off-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

ARM: at91: Fix typo in restart code panic message

2013-05-08T03:33:02+00:00

commit e7619459d47a673af3433208a42f583af920e9db upstream.

Signed-off-by: Maxime Ripard 
Acked-by: Jean-Christophe PLAGNIOL-VILLARD 
Signed-off-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

ARM: at91: remove partial parameter in bootargs for at91sam9x5ek.dtsi

2013-05-08T03:33:02+00:00

commit b090e5f68c0353534880b95ea0df56b8c0230b8c upstream.

Remove the malformed "mem=" bootargs parameter in at91sam9x5ek.dtsi

Acked-by: Jean-Christophe PLAGNIOL-VILLARD 
Signed-off-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman