litmus-rt.git/drivers/rtc, branch wip-extra-debug

i2c: Remove obsolete cleanup for clientdata

2010-09-30T12:14:22+00:00

A few new i2c-drivers came into the kernel which clear the clientdata-pointer
on exit. This is obsolete meanwhile, so fix it and hope the word will spread.

Signed-off-by: Wolfram Sang 
Acked-by: Mark Brown 
Signed-off-by: Jean Delvare

rtc: s3c: balance state changes of wakeup flag

2010-09-23T00:22:40+00:00

This change resolves a problem about unbalanced calls of
enable_irq_wakeup() and disable_irq_wakeup() for alarm interrupt.

Bug reproduction:

root@eb600:~# echo 0 > /sys/class/rtc/rtc0/wakealarm

WARNING: at kernel/irq/manage.c:361 set_irq_wake+0x7c/0xe4()
 Unbalanced IRQ 46 wake disable
Modules linked in:
[] (unwind_backtrace+0x0/0xd8) from [] (warn_slowpath_common+0x44/0x5c)
[] (warn_slowpath_common+0x44/0x5c) from [] (warn_slowpath_fmt+0x24/0x30)
[] (warn_slowpath_fmt+0x24/0x30) from [] (set_irq_wake+0x7c/0xe4)
[] (set_irq_wake+0x7c/0xe4) from [] (s3c_rtc_setalarm+0xa8/0xb8)
[] (s3c_rtc_setalarm+0xa8/0xb8) from [] (rtc_set_alarm+0x60/0x74)
[] (rtc_set_alarm+0x60/0x74) from [] (rtc_sysfs_set_wakealarm+0xc8/0xd8)
[] (rtc_sysfs_set_wakealarm+0xc8/0xd8) from [] (dev_attr_store+0x20/0x24)
[] (dev_attr_store+0x20/0x24) from [] (sysfs_write_file+0x104/0x13c)
[] (sysfs_write_file+0x104/0x13c) from [] (vfs_write+0xb0/0x158)
[] (vfs_write+0xb0/0x158) from [] (sys_write+0x3c/0x68)
[] (sys_write+0x3c/0x68) from [] (ret_fast_syscall+0x0/0x28)

Signed-off-by: Vladimir Zapolskiy 
Cc: Alessandro Zummo 
Cc: Ben Dooks 
Cc: Atul Dahiya 
Cc: Taekgyun Ko 
Cc: Kukjin Kim 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-ab3100.c: add missing platform_set_drvdata() in ab3100_rtc_probe()

2010-09-23T00:22:39+00:00

Otherwise, calling platform_get_drvdata() in ab3100_rtc_remove() returns
NULL.

Signed-off-by: Axel Lin 
Acked-by:Wan ZongShun 
Acked-by: Linus Walleij 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: do not mark PL031 IRQ as shared

2010-09-10T01:57:24+00:00

It was a mistake to mark the PL031 IRQ as shared (for the U8500),
we misread the datasheet. Get rid of this.

Signed-off-by: Linus Walleij 
Cc: Jonas Aberg 
Cc: Mian Yousaf Kaukab 
Acked-by: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: m41t80: do not use rtc_valid_tm in m41t80_rtc_read_alarm

2010-09-10T01:57:24+00:00

Commit b485fe5ea ("rtc/m41t80: use rtc_valid_tm() to check returned tm")
added rtc_valid_tm to m41t80_rtc_read_alarm() but it was wrong while the
t->time does not contain complete date/time.

This patch also fixes a warning:
warning: passing argument 1 of 'rtc_valid_tm' from incompatible pointer type

Signed-off-by: Atsushi Nemoto 
Cc: Wan ZongShun 
Cc: Alessandro Zummo 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc-bfin: fix state restoration when resuming

2010-09-10T01:57:22+00:00

Much (but not all) of the RTC state is kept in the RTC peripheral which
has its own power domain.  Periodically (1 HZ), that state is synced from
one power domain to the other (peripheral->core).  When we are resuming,
we need to wait for the sync to occur so that we don't get a mismatch of
reading undefined state in the rest of the driver.

Further, once the externally maintained bits have been synced back into
the core, we then need to restore the bits maintained in the core.  In our
particular case, that is just the write completion interrupt bit.

If we don't do any of this, working with the RTC causes ~5 second delays
from time to time after waking up due to the write completion interrupt
never firing.

Reported-by: Michael Dean 
Reported-by: Michael Hennerich 
Signed-off-by: Mike Frysinger 
Acked-by: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc-bfin: fix inverted logic in suspend path

2010-09-10T01:57:22+00:00

The int_clear helper takes a bitmask of interrupts to keep, not to
disable.  When suspending without wakeup enabled, we want to disable
all interrupts, so use 0 (keep none) instead of -1 (keep all).

Signed-off-by: Mike Frysinger 
Acked-by: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6

2010-08-12T16:11:31+00:00

* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  mmc_spi: Fix unterminated of_match_table
  of/sparc: fix build regression from of_device changes
  of/device: Replace struct of_device with struct platform_device

Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

2010-08-11T16:13:19+00:00

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (226 commits)
  ARM: 6323/1: cam60: don't use __init for cam60_spi_{flash_platform_data,partitions}
  ARM: 6324/1: cam60: move cam60_spi_devices to .init.data
  ARM: 6322/1: imx/pca100: Fix name of spi platform data
  ARM: 6321/1: fix syntax error in main Kconfig file
  ARM: 6297/1: move U300 timer to dynamic clock lookup
  ARM: 6296/1: clock U300 intcon and timer properly
  ARM: 6295/1: fix U300 apb_pclk split
  ARM: 6306/1: fix inverted MMC card detect in U300
  ARM: 6299/1: errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID
  ARM: 6294/1: etm: do a dummy read from OSSRR during initialization
  ARM: 6292/1: coresight: add ETM management registers
  ARM: 6288/1: ftrace: document mcount formats
  ARM: 6287/1: ftrace: clean up mcount assembly indentation
  ARM: 6286/1: fix Thumb-2 decompressor broken by "Auto calculate ZRELADDR"
  ARM: 6281/1: video/imxfb.c: allow usage without BACKLIGHT_CLASS_DEVICE
  ARM: 6280/1: imx: Fix build failure when including  without 
  ARM: S5PV210: Fix on missing s3c-sdhci card detection method for hsmmc3
  ARM: S5P: Fix on missing S5P_DEV_FIMC in plat-s5p/Kconfig
  ARM: S5PV210: Override FIMC driver name on Aquila board
  ARM: S5PC100: enable FIMC on SMDKC100
  ...

Fix up conflicts in arch/arm/mach-{s5pc100,s5pv210}/cpu.c due to
different subsystem 'setname' calls, and trivial port types in
include/linux/serial_core.h

rtc: rp5c01: add NVRAM support

2010-08-11T15:59:08+00:00

The Ricoh RP5C01 RTC contains 26 x 4 bits of NVRAM.  Provide access to it
via a sysfs "nvram" attribute file.

Signed-off-by: Geert Uytterhoeven 
Cc: Wan ZongShun 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds