Boris BREZILLON 2fe121e1f5 rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irq ...

The rtc user must wait at least 1 sec between each time/calandar update
(see atmel's datasheet chapter "Updating Time/Calendar").

Use the 1Hz interrupt to update the at91_rtc_upd_rdy flag and wait for
the at91_rtc_wait_upd_rdy event if the rtc is not ready.

This patch fixes a deadlock in an uninterruptible wait when the RTC is
updated more than once every second.  AFAICT the bug is here from the
beginning, but I think we should at least backport this fix to 3.10 and
the following longterm and stable releases.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reported-by: Bryan Evenson <bevenson@melinkcorp.com>
Tested-by: Bryan Evenson <bevenson@melinkcorp.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2014-06-06 16:08:08 -07:00

..

class.c

rtc: honor device tree /alias entries when assigning IDs

2014-01-23 16:37:00 -08:00

hctosys.c

rtc_sysfs_show_hctosys(): display 0 if resume failed

2012-10-06 03:05:04 +09:00

interface.c

drivers/rtc/interface.c: fix infinite loop in initializing the alarm

2014-06-06 16:08:06 -07:00

Kconfig

rtc: da9063: RTC driver

2014-06-06 16:08:08 -07:00

Makefile

rtc: da9063: RTC driver

2014-06-06 16:08:08 -07:00

rtc-88pm80x.c

drivers/rtc/rtc-88pm80x.c: use dev_get_platdata()

2013-11-13 12:09:28 +09:00

rtc-88pm860x.c

drivers/rtc/rtc-88pm860x.c: add missing of_node_put()

2014-06-06 16:08:07 -07:00

rtc-ab3100.c

drivers/rtc/rtc-ab3100.c: remove empty function

2013-07-03 16:07:54 -07:00

rtc-ab8500.c

drivers/rtc/rtc-ab8500.c: add second resolution to rtc driver

2013-07-03 16:07:59 -07:00

rtc-as3722.c

drivers/rtc/rtc-as3722.c: use SIMPLE_DEV_PM_OPS macro

2014-04-03 16:21:22 -07:00

rtc-at32ap700x.c

rtc: rtc-at32ap700x: remove unnecessary OOM messages

2014-04-03 16:21:17 -07:00

rtc-at91rm9200.c

rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irq

2014-06-06 16:08:08 -07:00

rtc-at91rm9200.h

Revert "drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR"

2013-04-05 09:36:53 -07:00

rtc-at91sam9.c

rtc: at91sam9: include <mach/hardware.h> explicitly

2013-12-20 11:41:32 +01:00

rtc-au1xxx.c

drivers/rtc/rtc-au1xxx.c: remove empty function

2013-07-03 16:07:54 -07:00

rtc-bfin.c

drivers/rtc/rtc-bfin.c: do not abort when requesting irq fails

2014-06-06 16:08:08 -07:00

rtc-bq32k.c

drivers/rtc/rtc-bq32k.c: remove empty function

2013-07-03 16:07:55 -07:00

rtc-bq4802.c

drivers/rtc/rtc-bq4802.c: remove empty function

2013-07-03 16:07:54 -07:00

rtc-cmos.c

drivers/rtc/rtc-cmos.c: drivers/char/rtc.c features for DECstation support

2014-06-06 16:08:07 -07:00

rtc-coh901331.c

rtc: rtc-coh901331: use devm_ioremap_resource()

2014-04-03 16:21:18 -07:00

rtc-core.h

…

rtc-da9052.c

drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm

2014-06-06 16:08:07 -07:00

rtc-da9055.c

drivers/rtc/rtc-da9055.c: remove use of regmap_irq_get_virq()

2014-04-03 16:21:24 -07:00

rtc-da9063.c

rtc: da9063: RTC driver

2014-06-06 16:08:08 -07:00

rtc-davinci.c

rtc: rtc-davinci: use devm_ioremap_resource()

2014-04-03 16:21:18 -07:00

rtc-dev.c

rtc: use dev_warn()/dev_dbg()/pr_err() instead of printk()

2013-02-21 17:22:29 -08:00

rtc-dm355evm.c

drivers/rtc/rtc-dm355evm.c: remove empty function

2013-07-03 16:07:53 -07:00

rtc-ds1216.c

drivers/rtc/rtc-ds1216.c: use module_platform_driver_probe()

2013-07-03 16:08:00 -07:00

rtc-ds1286.c

drivers/rtc/rtc-ds1286.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-ds1302.c

drivers/rtc/rtc-ds1302.c: handle write protection

2013-07-03 16:07:59 -07:00

rtc-ds1305.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-ds1307.c

drivers/rtc/rtc-ds1307.c: add alarm support for mcp7941x chips

2014-04-03 16:21:20 -07:00

rtc-ds1343.c

drivers/rtc/rtc-ds1343.c: fix potential race condition

2014-06-06 16:08:08 -07:00

rtc-ds1347.c

rtc: add support for maxim dallas rtc ds1347

2014-04-03 16:21:23 -07:00

rtc-ds1374.c

drivers/rtc/rtc-ds1374.c: fix spacing related issues

2013-07-03 16:07:46 -07:00

rtc-ds1390.c

rtc: rtc-ds1390: remove unnecessary OOM messages

2014-04-03 16:21:17 -07:00

rtc-ds1511.c

rtc: treewide: remove excess rtc_device validation

2014-04-03 16:21:24 -07:00

rtc-ds1553.c

rtc: treewide: remove excess rtc_device validation

2014-04-03 16:21:24 -07:00

rtc-ds1672.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-ds1742.c

rtc: rtc-ds1742: make of_device_id array const

2014-06-06 16:08:07 -07:00

rtc-ds2404.c

drivers/rtc/rtc-ds2404.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-ds3232.c

drivers/rtc/rtc-ds3232.c: enable ds3232 to work as wakeup source

2014-04-03 16:21:22 -07:00

rtc-ds3234.c

drivers/rtc/rtc-ds3234.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-efi.c

drivers/rtc/rtc-efi.c: avoid subtracting day twice when computing year days

2014-06-06 16:08:07 -07:00

rtc-em3027.c

drivers/rtc/rtc-em3027.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-ep93xx.c

drivers/rtc/rtc-ep93xx.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-fm3130.c

drivers/rtc/rtc-fm3130.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-generic.c

drivers/rtc/rtc-generic.c: remove empty function

2013-07-03 16:07:57 -07:00

rtc-hid-sensor-time.c

tree-wide: use reinit_completion instead of INIT_COMPLETION

2013-11-15 09:32:21 +09:00

rtc-hym8563.c

drivers/rtc/rtc-hym8563.c: add optional clock-output-names property

2014-06-06 16:08:08 -07:00

rtc-imxdi.c

drivers/rtc/rtc-imxdi.c: check the return value from clk_prepare_enable()

2014-04-03 16:21:16 -07:00

rtc-isl1208.c

drivers/rtc/rtc-isl1208.c: use devm_* APIs

2013-11-13 12:09:27 +09:00

rtc-isl12022.c

drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO

2013-07-16 16:06:00 +09:30

rtc-isl12057.c

rtc: isl12057: make of_device_id array const

2014-06-06 16:08:07 -07:00

rtc-jz4740.c

rtc: rtc-jz4740: use devm_ioremap_resource()

2014-04-03 16:21:19 -07:00

rtc-lib.c

rtc: Initialized rtc_time->tm_isdst

2011-08-26 17:26:35 -07:00

rtc-lp8788.c

drivers/rtc/rtc-lp8788.c: remove empty function

2013-07-03 16:07:53 -07:00

rtc-lpc32xx.c

rtc: rtc-lpc32xx: remove unnecessary OOM messages

2014-04-03 16:21:18 -07:00

rtc-ls1x.c

drivers/rtc/rtc-ls1x.c: remove empty function

2013-07-03 16:07:53 -07:00

rtc-m41t80.c

drivers/rtc/rtc-m41t80.c: add support for MicroCrystal rv4162

2014-06-06 16:08:07 -07:00

rtc-m41t93.c

drivers/rtc/rtc-m41t93.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-m41t94.c

drivers/rtc/rtc-m41t94.c: remove empty function

2013-07-03 16:07:57 -07:00

rtc-m48t35.c

drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO

2013-07-16 16:06:00 +09:30

rtc-m48t59.c

drivers/rtc/rtc-m48t59.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-m48t86.c

drivers/rtc/rtc-m48t86.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-max6900.c

drivers/rtc/rtc-max6900.c: remove redundant checks

2013-11-13 12:09:27 +09:00

rtc-max6902.c

drivers/rtc/rtc-max6902.c: remove empty function

2013-07-03 16:07:57 -07:00

rtc-max8907.c

rtc: max8907: weekday encoding fixes

2014-01-23 16:37:00 -08:00

rtc-max8925.c

drivers/rtc/rtc-max8925.c: remove empty function

2013-07-03 16:07:53 -07:00

rtc-max8997.c

drivers/rtc/rtc-max8997.c: remove empty function

2013-07-03 16:07:57 -07:00

rtc-max8998.c

For the 3.11 merge we only have one new MFD driver for the Kontron PLD.

2013-07-10 11:10:27 -07:00

rtc-max77686.c

drivers/rtc/rtc-max77686.c: Fix wrong register

2013-09-11 15:58:56 -07:00

rtc-mc13xxx.c

drivers/rtc/rtc-mc13xxx.c: fix potential race condition

2014-04-03 16:21:23 -07:00

rtc-mcp795.c

drivers/rtc: add support for Microchip MCP795

2014-06-06 16:08:08 -07:00

rtc-moxart.c

rtc: rtc-moxart: remove unnecessary OOM messages

2014-04-03 16:21:17 -07:00

rtc-mpc5121.c

drivers: clean-up prom.h implicit includes

2013-10-09 20:04:04 -05:00

rtc-mrst.c

drivers/rtc/rtc-mrst.c: remove redundant dev_set_drvdata

2013-11-13 12:09:27 +09:00

rtc-msm6242.c

drivers/rtc/rtc-msm6242.c: remove empty function

2013-07-03 16:07:53 -07:00

rtc-mv.c

rtc: rtc-mv: make of_device_id array const

2014-06-06 16:08:08 -07:00

rtc-mxc.c

drivers/rtc/rtc-mxc.c: check the return value from clk_prepare_enable()

2014-01-23 16:36:59 -08:00

rtc-nuc900.c

rtc: rtc-nuc900: remove unnecessary OOM messages

2014-04-03 16:21:17 -07:00

rtc-omap.c

drivers/rtc/rtc-omap.c: add support for enabling 32khz clock

2014-06-06 16:08:08 -07:00

rtc-palmas.c

rtc: rtc-palmas: make of_device_id array const

2014-06-06 16:08:08 -07:00

rtc-pcap.c

rtc: rtc-pcap: remove unnecessary platform_set_drvdata()

2013-07-03 16:07:51 -07:00

rtc-pcf2123.c

drivers/rtc/rtc-pcf2123.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-pcf2127.c

drivers/rtc/rtc-pcf2127.c: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO

2014-01-23 16:37:00 -08:00

rtc-pcf8523.c

drivers/rtc/rtc-pcf8523.c: fix month definition

2014-05-06 13:04:58 -07:00

rtc-pcf8563.c

drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO

2013-07-16 16:06:00 +09:30

rtc-pcf8583.c

drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO

2013-07-16 16:06:00 +09:30

rtc-pcf50633.c

rtc: rtc-pcf50633: use devm_*() functions

2013-04-29 18:28:38 -07:00

rtc-pl030.c

drivers/rtc/rtc-pl030.c: use devm_kzalloc() instead of kmalloc()

2013-11-13 12:09:31 +09:00

rtc-pl031.c

drivers/rtc/rtc-pl03x.c: remove unnecessary amba_set_drvdata()

2013-11-13 12:09:31 +09:00

rtc-pm8xxx.c

rtc: pm8xxx: move device_init_wakeup() before rtc_register

2014-04-03 16:21:23 -07:00

rtc-proc.c

procfs: new helper - PDE_DATA(inode)

2013-04-09 14:13:32 -04:00

rtc-ps3.c

drivers/rtc/rtc-ps3.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-puv3.c

drivers/rtc/rtc-puv3.c: use dev_dbg() instead of pr_debug()

2013-11-13 12:09:31 +09:00

rtc-pxa.c

rtc: pxa: drop unused #define TIMER_FREQ

2013-12-20 11:41:33 +01:00

rtc-r9701.c

rtc: rtc-r9701: use spi_set_drvdata()

2013-04-29 18:28:34 -07:00

rtc-rc5t583.c

rtc: rtc-rc5t583: use platform_{get,set}_drvdata()

2013-07-03 16:07:55 -07:00

rtc-rp5c01.c

rtc: rtc-rp5c01: remove unnecessary platform_set_drvdata()

2013-07-03 16:07:52 -07:00

rtc-rs5c313.c

drivers/rtc/rtc-rs5c313.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-rs5c348.c

drivers/rtc/rtc-rs5c348.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-rs5c372.c

drivers/rtc/rtc-rs5c372.c: add R2221T/L variant to the driver

2013-05-07 18:38:26 -07:00

rtc-rv3029c2.c

drivers/rtc/rtc-rv3029c2.c: fix potential race condition

2014-04-03 16:21:24 -07:00

rtc-rx4581.c

drivers/rtc/rtc-rx4581.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-rx8025.c

rtc: rtc-rx8025: remove unnecessary OOM messages

2014-04-03 16:21:18 -07:00

rtc-rx8581.c

drivers/rtc/rtc-rx8581.c: add SMBus-only adapters support

2014-01-23 16:37:00 -08:00

rtc-s3c.c

drivers/rtc/rtc-s3c.c: remove NO_IRQ macro

2014-04-03 16:21:24 -07:00

rtc-s3c.h

rtc: s3c: make header file local

2013-04-19 13:51:25 +02:00

rtc-s5m.c

drivers/rtc/rtc-s5m.c: s5m_rtc_{suspend,resume}() should depend on CONFIG_PM_SLEEP

2014-01-23 16:37:00 -08:00

rtc-s35390a.c

rtc: rtc-s35390a: use devm_*() functions

2013-04-29 18:28:38 -07:00

rtc-sa1100.c

rtc: rtc-sa1100: remove unnecessary platform_set_drvdata()

2013-07-03 16:07:51 -07:00

rtc-sh.c

drivers/rtc/rtc-sh.c: use dev_get_platdata()

2013-11-13 12:09:30 +09:00

rtc-sirfsoc.c

drivers/rtc/rtc-sirfsoc.c: fix kernel panic of backing from hibernation

2014-04-03 16:21:19 -07:00

rtc-snvs.c

drivers/rtc/rtc-snvs.c: remove redundant of_match_ptr

2013-11-13 12:09:30 +09:00

rtc-spear.c

rtc: rtc-spear: remove unnecessary OOM messages

2014-04-03 16:21:18 -07:00

rtc-starfire.c

drivers/rtc/rtc-starfire.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-stk17ta8.c

rtc: treewide: remove excess rtc_device validation

2014-04-03 16:21:24 -07:00

rtc-stmp3xxx.c

drivers/rtc/rtc-stmp3xxx.c: remove redundant of_match_ptr

2013-11-13 12:09:30 +09:00

rtc-sun4v.c

drivers/rtc/rtc-sun4v.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-sunxi.c

rtc: sunxi: change compatibles

2014-04-03 16:21:21 -07:00

rtc-sysfs.c

rtc: convert class code to use dev_groups

2013-07-29 13:10:58 -07:00

rtc-tegra.c

drivers/rtc: don't check resource with devm_ioremap_resource

2013-05-18 11:57:07 +02:00

rtc-test.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-tile.c

drivers/rtc/rtc-tile.c: remove empty function

2013-07-03 16:07:53 -07:00

rtc-tps6586x.c

drivers/rtc/rtc-tps6586x.c: device wakeup flags correction

2013-06-12 16:29:45 -07:00

rtc-tps65910.c

drivers/rtc/rtc-tps65910.c: remove unnecessary include

2013-11-13 12:09:31 +09:00

rtc-tps80031.c

drivers/rtc/rtc-tps80031.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-twl.c

drivers/rtc/rtc-twl.c: use devm_*() functions

2014-01-23 16:36:59 -08:00

rtc-tx4939.c

rtc: treewide: remove excess rtc_device validation

2014-04-03 16:21:24 -07:00

rtc-v3020.c

drivers/rtc/rtc-v3020.c: use dev_get_platdata()

2013-11-13 12:09:30 +09:00

rtc-vr41xx.c

drivers/rtc/rtc-vr41xx.c: use devm_*() functions

2014-01-23 16:36:59 -08:00

rtc-vt8500.c

rtc: rtc-vt8500: use devm_ioremap_resource()

2014-04-03 16:21:19 -07:00

rtc-wm831x.c

drivers/rtc/rtc-wm831x.c: remove empty function

2013-07-03 16:07:59 -07:00

rtc-wm8350.c

rtc: rtc-wm8350: switch to using SIMPLE_DEV_PM_OPS

2013-04-29 18:28:32 -07:00

rtc-x1205.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-xgene.c

drivers/rtc: add APM X-Gene SoC RTC driver

2014-06-06 16:08:06 -07:00

systohc.c

NTP: Add a CONFIG_RTC_SYSTOHC configuration

2013-01-15 18:16:06 -08:00