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70c96dfac0
linux/drivers/rtc
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Alim Akhtar 70c96dfac0 rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq() 
As per code flow s3c_rtc_setfreq() will get called with rtc clock disabled
and in set_freq we perform h/w registers read/write, which results in a
kernel crash on exynos7 platform while probing rtc driver.
Below is code flow:
s3c_rtc_probe()
    clk_prepare_enable(info->rtc_clk) // rtc clock enabled
    s3c_rtc_gettime() // will enable clk if not done, and disable it upon exit
    s3c_rtc_setfreq() //then this will be called with clk disabled

This patch take cares of such issue by adding s3c_rtc_{enable/disable}_clk in
s3c_rtc_setfreq().

Fixes: 24e1455493 ("drivers/rtc/rtc-s3c.c: delete duplicate clock control")

Cc: <stable@vger.kernel.org>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Tested-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-07-19 17:48:06 +02:00
..
class.c rtc: make class.c explicitly non-modular 2016-03-14 17:08:18 +01:00
hctosys.c rtc: use more standard kernel logging styles 2015-04-17 09:04:02 -04:00
interface.c rtc: fix a typo and reduce three empty lines to one 2016-07-11 23:22:35 +02:00
Kconfig rtc: move mc146818 helper functions out-of-line 2016-06-26 01:20:08 +02:00
Makefile rtc: move mc146818 helper functions out-of-line 2016-06-26 01:20:08 +02:00
rtc-88pm80x.c rtc: 88pm80x: add device tree support 2015-09-05 13:19:05 +02:00
rtc-88pm860x.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-ab3100.c drivers/rtc/ab3100: Update driver to address y2038/y2106 issues 2015-04-03 08:18:25 +02:00
rtc-ab8500.c rtc: ab8500: remove misuse of IRQF_NO_SUSPEND flag 2015-11-08 14:12:25 +01:00
rtc-ab-b5ze-s3.c rtc: Export OF module alias information in missing drivers 2015-09-05 13:19:08 +02:00
rtc-abx80x.c rtc: abx80x: use devm_add_action_or_reset() 2016-07-19 17:27:42 +02:00
rtc-armada38x.c rtc: Fix module autoload for OF platform drivers 2015-09-05 19:37:22 +02:00
rtc-as3722.c rtc: as3722: Drop IRQF_EARLY_RESUME flag 2016-03-14 17:08:25 +01:00
rtc-asm9260.c rtc: asm9260: remove incorrect __init/__exit annotations 2016-03-19 00:02:55 +01:00
rtc-at32ap700x.c rtc: at32ap700x: update author email 2015-06-25 01:12:50 +02:00
rtc-at91rm9200.c rtc: at91rm9200: clear RTC alarm status flag prior to suspending 2015-11-08 14:12:28 +01:00
rtc-at91rm9200.h
rtc-at91sam9.c rtc: at91sam9: remove duplicate assignment of variable mr 2016-05-20 12:33:51 +02:00
rtc-au1xxx.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-bfin.c rtc: Drop (un)likely before IS_ERR(_OR_NULL) 2015-09-05 13:19:09 +02:00
rtc-bq32k.c rtc: Drop owner assignment from i2c_driver 2015-09-05 13:19:06 +02:00
rtc-bq4802.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-cmos.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-coh901331.c rtc: Fix module autoload for OF platform drivers 2015-09-05 19:37:22 +02:00
rtc-core.h rtc: switch to using is_visible() to control sysfs attributes 2015-09-05 13:19:07 +02:00
rtc-da9052.c rtc: da9053: fix access ordering error during RTC interrupt at system power on 2016-05-20 12:33:51 +02:00
rtc-da9055.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-da9063.c rtc: da9063: avoid writing undefined data to rtc 2016-01-11 20:19:57 +01:00
rtc-davinci.c rtc: davinci: remove incorrect reference to probe function 2015-11-08 14:12:29 +01:00
rtc-dev.c rtc: dev: properly manage lifetime of dev and cdev in rtc device 2015-09-05 13:19:07 +02:00
rtc-digicolor.c rtc: driver for Conexant Digicolor CX92755 on-chip RTC 2015-04-17 09:04:01 -04:00
rtc-dm355evm.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-ds1216.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-ds1286.c rtc: ds1286: move header to linux/rtc 2016-07-08 16:23:11 +02:00
rtc-ds1302.c rtc: ds1302: fix write value for day of week register 2016-05-20 12:33:51 +02:00
rtc-ds1305.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-ds1307.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-ds1343.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-ds1347.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
rtc-ds1374.c rtc: ds1374: Remove unused variable 2015-09-05 19:37:22 +02:00
rtc-ds1390.c RTC for 4.4 2015-11-10 10:01:21 -08:00
rtc-ds1511.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-ds1553.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-ds1672.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-ds1685.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-ds1742.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-ds2404.c rtc: ds2404: move rtc-ds2404.h to platform_data 2016-06-27 10:48:28 +02:00
rtc-ds3232.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-efi-platform.c rtc: use more standard kernel logging styles 2015-04-17 09:04:02 -04:00
rtc-efi.c rtc: efi: Fail probing if RTC reads don't work 2016-06-06 17:07:33 +02:00
rtc-em3027.c drivers/rtc/rtc-em3027.c: add device tree support 2015-04-17 09:03:59 -04:00
rtc-ep93xx.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-fm3130.c rtc: Drop owner assignment from i2c_driver 2015-09-05 13:19:06 +02:00
rtc-gemini.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-generic.c rtc: generic: remove get_rtc_time/set_rtc_time wrappers 2016-06-04 00:23:35 +02:00
rtc-hid-sensor-time.c rtc: hid-sensor-time: Constify platform_device_id 2015-06-19 20:03:20 +02:00
rtc-hym8563.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-imxdi.c rtc: imxdi: fix spelling mistake in warning message 2016-01-11 20:19:58 +01:00
rtc-isl1208.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-isl12022.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-isl12057.c rtc: isl12057: let the rtc core interpret the partial alarm 2016-07-11 23:22:32 +02:00
rtc-jz4740.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-lib.c rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement 2014-11-21 12:00:00 -08:00
rtc-lp8788.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-lpc24xx.c rtc: add rtc-lpc24xx driver 2015-09-05 13:19:06 +02:00
rtc-lpc32xx.c rtc: lpc32xx: remove irq > NR_IRQS check from probe() 2016-01-11 20:19:59 +01:00
rtc-ls1x.c MIPS: Loongson: Naming style cleanup and rework 2015-06-21 21:53:59 +02:00
rtc-m41t80.c rtc: m41t80: use devm_add_action_or_reset() 2016-07-19 17:27:40 +02:00
rtc-m41t93.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
rtc-m41t94.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
rtc-m48t35.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-m48t59.c rtc: m48t59: clean up m48t59_nvram_read()/m48t59_nvram_write() 2015-09-05 13:19:10 +02:00
rtc-m48t86.c rtc: m48t86: move m48t86.h to platform_data 2016-06-27 18:15:25 +02:00
rtc-max6900.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-max6902.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
rtc-max6916.c rtc: add support for Maxim max6916 2016-06-04 16:05:59 +02:00
rtc-max8907.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-max8925.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-max8997.c rtc: Fix module autoload for rtc-{ab8500,max8997,s5m} drivers 2015-09-05 19:37:21 +02:00
rtc-max8998.c rtc: ds1672, max6900, max8998: Add MODULE_DEVICE_TABLE 2015-06-25 01:13:36 +02:00
rtc-max77686.c rtc: max77686: Use REGMAP_IRQ_REG for regmap-rtc-irqs initialisation 2016-03-14 17:08:27 +01:00
rtc-mc13xxx.c rtc: mc13xxx: remove UIE signaling 2016-05-20 12:33:51 +02:00
rtc-mc146818-lib.c rtc: move mc146818 helper functions out-of-line 2016-06-26 01:20:08 +02:00
rtc-mcp795.c rtc: mcp795: add devicetree support 2016-03-21 22:55:29 +01:00
rtc-moxart.c rtc: Fix module autoload for OF platform drivers 2015-09-05 19:37:22 +02:00
rtc-mpc5121.c rtc: Fix module autoload for OF platform drivers 2015-09-05 19:37:22 +02:00
rtc-mrst.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-msm6242.c rtc: use more standard kernel logging styles 2015-04-17 09:04:02 -04:00
rtc-mt6397.c rtc: mt6397: Remove plaform module alias 2016-03-14 17:08:26 +01:00
rtc-mv.c rtc: Fix module autoload for OF platform drivers 2015-09-05 19:37:22 +02:00
rtc-mxc.c rtc: mxc: remove UIE signaling 2016-05-20 12:33:51 +02:00
rtc-nuc900.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-omap.c rtc: omap: Add external clock enabling support 2015-09-05 19:37:21 +02:00
rtc-opal.c powerpc: Remove broken GregorianDay() 2015-12-16 12:54:04 +11:00
rtc-palmas.c rtc: palmas: Drop IRQF_EARLY_RESUME flag 2016-03-14 17:08:22 +01:00
rtc-pcap.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-pcf2123.c rtc: pcf2123: use sign_extend32() for sign extension 2016-06-04 15:50:44 +02:00
rtc-pcf2127.c rtc: pcf2127: add pcf2129 device id 2016-03-14 17:08:41 +01:00
rtc-pcf8523.c rtc: pcf8523: properly handle oscillator stop bit 2016-03-14 17:08:30 +01:00
rtc-pcf8563.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-pcf8583.c rtc: Drop owner assignment from i2c_driver 2015-09-05 13:19:06 +02:00
rtc-pcf50633.c
rtc-pcf85063.c rtc: pcf85063: remove struct pcf85063 2016-03-14 17:08:30 +01:00
rtc-pic32.c rtc: pic32: Add PIC32 real time clock driver 2016-03-14 17:08:21 +01:00
rtc-pl030.c
rtc-pl031.c rtc: pl031: remove misuse of IRQF_NO_SUSPEND flag 2015-11-08 14:12:24 +01:00
rtc-pm8xxx.c Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next 2014-11-03 19:53:56 -08:00
rtc-proc.c rtc: fix module reference count in rtc-proc 2016-01-11 20:19:55 +01:00
rtc-ps3.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-puv3.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-pxa.c rtc: sa1100/pxa: convert to run-time register mapping 2015-09-05 19:37:16 +02:00
rtc-r9701.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
rtc-rc5t583.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-rk808.c rtc: rk808: Compensate for Rockchip calendar deviation on November 31st 2015-12-20 13:39:00 +01:00
rtc-rp5c01.c rtc: rp5c01: clean up rp5c01_nvram_read()/rp5c01_nvram_write() 2015-09-05 13:19:10 +02:00
rtc-rs5c313.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-rs5c348.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-rs5c372.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-rv3029c2.c rtc: rv3029: hide unused i2c device table 2016-05-21 17:07:16 +02:00
rtc-rv8803.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-rx4581.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
rtc-rx6110.c rtc: add driver for RX6110SA real time clock 2016-03-14 17:08:10 +01:00
rtc-rx8010.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-rx8025.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-rx8581.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-s3c.c rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq() 2016-07-19 17:48:06 +02:00
rtc-s3c.h
rtc-s5m.c rtc: s5m: De-inline large functions to save space 2016-03-14 17:08:18 +01:00
rtc-s35390a.c rtc: s35390a: improve two comments in .set_alarm 2016-07-11 23:22:35 +02:00
rtc-sa1100.c rtc: sa1100/pxa: convert to run-time register mapping 2015-09-05 19:37:16 +02:00
rtc-sa1100.h rtc: sa1100/pxa: convert to run-time register mapping 2015-09-05 19:37:16 +02:00
rtc-sh.c rtc: sh: don't validate alarm time provided to .set_alarm 2016-07-11 23:22:33 +02:00
rtc-sirfsoc.c rtc: sirfsoc: move to regmap APIs from platform-specific APIs 2015-09-05 13:19:06 +02:00
rtc-snvs.c rtc: snvs: return error in case enable_irq_wake fails 2016-05-20 12:33:51 +02:00
rtc-spear.c rtc: simplify use of devm_ioremap_resource 2015-06-25 01:13:40 +02:00
rtc-st-lpc.c rtc: st: Update IP layout information to include Clocksource 2015-07-23 17:07:35 +01:00
rtc-starfire.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-stk17ta8.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-stmp3xxx.c rtc: stmp3xxx: print message on error 2016-05-20 12:33:51 +02:00
rtc-sun4v.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-sun6i.c rtc: sun6i: Add sun6i RTC driver 2014-09-19 12:39:19 +02:00
rtc-sunxi.c rtc: sunxi: use of_device_get_match_data 2016-01-11 20:19:57 +01:00
rtc-sysfs.c rtc: implement a sysfs interface for clock offset 2016-03-14 17:08:16 +01:00
rtc-tegra.c rtc: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
rtc-test.c drivers/rtc/test: Update driver to address y2038/y2106 issues 2015-04-03 08:18:24 +02:00
rtc-tile.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-tps6586x.c rtc: tps6586x: rename so module can be autoloaded 2016-05-21 17:07:17 +02:00
rtc-tps65910.c rtc: tps65910: Drop IRQF_EARLY_RESUME flag 2016-03-14 17:08:23 +01:00
rtc-tps80031.c rtc: tps80031: Drop IRQF_EARLY_RESUME flag 2016-03-14 17:08:24 +01:00
rtc-twl.c rtc: use more standard kernel logging styles 2015-04-17 09:04:02 -04:00
rtc-tx4939.c rtc: tx4939: clean up tx4939_rtc_nvram_read()/tx4939_rtc_nvram_write() 2015-09-05 13:19:10 +02:00
rtc-v3020.c rtc: v3020: move rtc-v3020.h to platform_data 2016-07-09 10:24:21 +02:00
rtc-vr41xx.c rtc: vr41xx: Wire up alarm_irq_enable 2016-03-14 17:08:25 +01:00
rtc-vt8500.c rtc: Fix module autoload for OF platform drivers 2015-09-05 19:37:22 +02:00
rtc-wm831x.c
rtc-wm8350.c
rtc-x1205.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-xgene.c rtc: drop owner assignment from platform_drivers 2014-10-20 16:21:31 +02:00
rtc-zynqmp.c rtc: zynqmp: Update seconds time programming logic 2016-05-20 12:33:51 +02:00
systohc.c rtc: NTP: Add CONFIG_RTC_SYSTOHC_DEVICE for NTP synchronization 2015-06-25 01:13:42 +02:00