Kevin Hilman
8dcebaa9a0
drivers/rtc/rtc-twl.c: ensure all interrupts are disabled during probe ...
On some platforms, bootloaders are known to do some interesting RTC
programming. Without going into the obscurities as to why this may be
the case, suffice it to say the the driver should not make any
assumptions about the state of the RTC when the driver loads. In
particular, the driver probe should be sure that all interrupts are
disabled until otherwise programmed.
This was discovered when finding bursty I2C traffic every second on
Overo platforms. This I2C overhead was keeping the SoC from hitting
deep power states. The cause was found to be the RTC firing every
second on the I2C-connected TWL PMIC.
Special thanks to Felipe Balbi for suggesting to look for a rogue driver
as the source of the I2C traffic rather than the I2C driver itself.
Special thanks to Steve Sakoman for helping track down the source of the
continuous RTC interrups on the Overo boards.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Tested-by: Steve Sakoman <steve@sakoman.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Tested-by: Shubhrajyoti Datta <omaplinuxkernel@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-17 15:00:38 -07:00
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2011-12-05 16:53:43 -08:00
RTC: Avoid races between RTC alarm wakeup and suspend.
2012-08-08 20:49:16 +02:00
Merge branch 'akpm' (Andrew's patch-bomb)
2012-07-30 17:25:34 -07:00
rtc: Add rtc support to 88PM80X PMIC
2012-07-09 15:17:43 +02:00
rtc/rtc-88pm80x: remove unneed devm_kfree
2012-07-31 18:42:50 -07:00
Merge branch 'akpm' (Andrew's patch-bomb)
2012-04-05 15:30:34 -07:00
drivers/rtc/rtc-ab8500.c: remove fix for AB8500 ED version
2012-07-30 17:25:18 -07:00
ARM: at91: fix new build errors
2012-07-04 13:56:48 +02:00
ARM: at91: fix rtc-at91sam9 irq issue due to sparse irq support
2012-08-23 14:55:45 +02:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
RTC: Avoid races between RTC alarm wakeup and suspend.
2012-08-08 20:49:16 +02:00
drivers/rtc/rtc-coh901331.c: use devm allocation
2012-07-30 17:25:17 -07:00
rtc/rtc-da9052: remove unneed devm_kfree call
2012-07-30 17:25:18 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert rtc spi drivers to module_spi_driver
2012-03-23 16:58:39 -07:00
rtc: ds1307: add trickle charger support
2012-05-29 16:22:33 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc spi drivers to module_spi_driver
2012-03-23 16:58:39 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc spi drivers to module_spi_driver
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-efi.c: fix section mismatch warning
2012-04-12 13:12:12 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-ep93xx.c: convert to use module_platform_driver()
2012-05-29 16:22:33 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: imx dryice: Add missing clk_prepare
2012-04-25 17:03:44 +02:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-jz4740.c: make jz4740_rtc_driver static
2012-01-10 16:30:53 -08:00
rtc: Initialized rtc_time->tm_isdst
2011-08-26 17:26:35 -07:00
drivers/rtc/rtc-lpc32xx.c: add device tree support
2012-05-29 16:22:34 -07:00
MIPS: add RTC support for loongson1B
2012-03-23 16:58:39 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-m41t93.c: don't let get_time() reset M41T93_FLAG_OF
2012-05-29 16:22:33 -07:00
rtc: convert rtc spi drivers to module_spi_driver
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc spi drivers to module_spi_driver
2012-03-23 16:58:39 -07:00
mfd: Transfer rtc max8925 irq from MFD defined resources
2012-07-09 00:16:10 +02:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc/mc13xxx: add support for the rtc in the mc34708 pmic
2012-07-30 17:25:18 -07:00
rtc: Fix possible null pointer dereference in rtc-mpc5121.c
2012-04-26 11:17:01 +02:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
ARM: Kirkwood: Replace mrvl with marvell
2012-07-25 17:06:23 +02:00
drivers/rtc/rtc-mxc.c: fix irq enabled interrupts warning
2012-07-11 16:04:46 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-pcf2123.c: initialize dynamic sysfs attributes
2012-08-21 16:45:03 -07:00
drivers/rtc/rtc-pcf8563.c: add device tree support
2012-07-30 17:25:19 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
Merge branch 'amba' of git://git.linaro.org/people/rmk/linux-arm
2012-03-23 17:36:29 -07:00
rtc: pl031: fix up IRQ flags
2012-07-30 17:25:18 -07:00
drivers/rtc/rtc-pm8xxx.c: make pm8xxx_rtc_pm_ops static
2012-03-23 16:58:39 -07:00
rtc-puv3: solve section mismatch in rtc-puv3.c
2012-01-10 10:29:42 +08:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-r9701.c: check that r9701_set_datetime() succeeded
2012-07-30 17:25:18 -07:00
drivers/rtc/rtc-rs5c348.c: fix hour decoding in 12-hour mode
2012-08-21 16:45:03 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-s3c.c: replace #include header files from asm/* to linux/*
2012-07-30 17:25:18 -07:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
ARM: cleanups of io includes
2012-03-29 18:02:10 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
drivers/rtc/rtc-spear.c: fix use-after-free in spear_rtc_remove()
2012-07-11 16:04:41 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
rtc: stmp3xxx: Add simple binding for the stmp3xxx-rtc
2012-07-03 13:22:36 +08:00
drivers/rtc/rtc-tegra.c: clean up probe/remove routines
2012-05-29 16:22:34 -07:00
drivers/rtc/rtc-twl.c: ensure all interrupts are disabled during probe
2012-09-17 15:00:38 -07:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
drivers/rtc: remove IRQF_DISABLED
2012-03-23 16:58:39 -07:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: wm831x: Feed the write counter into device_add_randomness()
2012-07-19 10:38:31 -04:00
rtc: convert drivers/rtc/* to use module_platform_driver()
2012-01-10 16:30:53 -08:00
rtc: convert rtc i2c drivers to module_i2c_driver
2012-03-23 16:58:39 -07:00
8dcebaa9a0