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Fabien Lahoudere 666b5d1e9f rtc: rx8010: change lock mechanism 
Remove spinlock and use the "rtc->ops_lock" from RTC subsystem instead.
spin_lock_irqsave() is not needed here because we do not have hard IRQs.

This patch fixes the following issue:

root@GE004097290448 b850v3:~# hwclock --systohc
root@GE004097290448 b850v3:~# hwclock --systohc
root@GE004097290448 b850v3:~# hwclock --systohc
root@GE004097290448 b850v3:~# hwclock --systohc
root@GE004097290448 b850v3:~# hwclock --systohc
[   82.108175] BUG: spinlock wrong CPU on CPU#0, hwclock/855
[   82.113660]  lock: 0xedb4899c, .magic: dead4ead, .owner: hwclock/855, .owner_cpu: 1
[   82.121329] CPU: 0 PID: 855 Comm: hwclock Not tainted 4.8.0-00042-g09d5410-dirty #20
[   82.129078] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[   82.135609] Backtrace:
[   82.138090] [<8010d378>] (dump_backtrace) from [<8010d5c0>] (show_stack+0x20/0x24)
[   82.145664]  r7:ec936000 r6:600a0013 r5:00000000 r4:81031680
[   82.151402] [<8010d5a0>] (show_stack) from [<80401518>] (dump_stack+0xb4/0xe8)
[   82.158636] [<80401464>] (dump_stack) from [<8017b8b0>] (spin_dump+0x84/0xcc)
[   82.165775]  r10:00000000 r9:ec936000 r8:81056090 r7:600a0013 r6:edb4899c r5:edb4899c
[   82.173691]  r4:e5033e00 r3:00000000
[   82.177308] [<8017b82c>] (spin_dump) from [<8017bcb0>] (do_raw_spin_unlock+0x108/0x130)
[   82.185314]  r5:edb4899c r4:edb4899c
[   82.188938] [<8017bba8>] (do_raw_spin_unlock) from [<8094b93c>] (_raw_spin_unlock_irqrestore+0x34/0x54)
[   82.198333]  r5:edb4899c r4:600a0013
[   82.201953] [<8094b908>] (_raw_spin_unlock_irqrestore) from [<8065b090>] (rx8010_set_time+0x14c/0x188)
[   82.211261]  r5:00000020 r4:edb48990
[   82.214882] [<8065af44>] (rx8010_set_time) from [<80653fe4>] (rtc_set_time+0x70/0x104)
[   82.222801]  r7:00000051 r6:edb39da0 r5:edb39c00 r4:ec937e8c
[   82.228535] [<80653f74>] (rtc_set_time) from [<80655774>] (rtc_dev_ioctl+0x3c4/0x674)
[   82.236368]  r7:00000051 r6:7ecf1b74 r5:00000000 r4:edb39c00
[   82.242106] [<806553b0>] (rtc_dev_ioctl) from [<80284034>] (do_vfs_ioctl+0xa4/0xa6c)
[   82.249851]  r8:00000003 r7:80284a40 r6:ed1e9c80 r5:edb44e60 r4:7ecf1b74
[   82.256642] [<80283f90>] (do_vfs_ioctl) from [<80284a40>] (SyS_ioctl+0x44/0x6c)
[   82.263953]  r10:00000000 r9:ec936000 r8:7ecf1b74 r7:4024700a r6:ed1e9c80 r5:00000003
[   82.271869]  r4:ed1e9c80
[   82.274432] [<802849fc>] (SyS_ioctl) from [<80108520>] (ret_fast_syscall+0x0/0x1c)
[   82.282005]  r9:ec936000 r8:801086c4 r7:00000036 r6:00000000 r5:00000003 r4:0008e1bc
root@GE004097290448 b850v3:~#
Message from syslogd@GE004097290448 at Dec  3 11:17:08 ...
 kernel:[   82.108175] BUG: spinlock wrong CPU on CPU#0, hwclock/855

Message from syslogd@GE004097290448 at Dec  3 11:17:08 ...
 kernel:[   82.113660]  lock: 0xedb4899c, .magic: dead4ead, .owner: hwclock/855, .owner_cpu: 1
hwclock --systohc
root@GE004097290448 b850v3:~#

Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-04 23:39:15 +01:00
..
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
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
Kconfig
rtc: add support for EPSON TOYOCOM RTC-7301SF/DG
2016-12-19 00:59:21 +01:00
Makefile
rtc: add support for EPSON TOYOCOM RTC-7301SF/DG
2016-12-19 00:59:21 +01:00
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-ac100.c
rtc: ac100: Add NULL checking for devm_kzalloc call
2016-09-22 00:14:41 +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: fix module autoload
2016-10-19 08:45:48 +02:00
rtc-at32ap700x.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +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: Fix missing spin_lock_init()
2016-07-26 00:09:18 +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: bq32k: Fix handling of oscillator failure flag
2016-08-31 18:21:35 +02:00
rtc-bq4802.c
rtc: drop owner assignment from platform_drivers
2014-10-20 16:21:31 +02:00
rtc-cmos.c
RTC for 4.10
2016-12-18 18:18:03 -08:00
rtc-coh901331.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +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: explicitly set tm_sec = 0 for drivers with minute accurancy
2016-07-19 18:15:21 +02:00
rtc-da9055.c
rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
2016-07-19 18:15:21 +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: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
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: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
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: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-ds1305.c
rtc: simplify implementations of read_alarm
2016-07-09 10:24:45 +02:00
rtc-ds1307.c
rtc: ds1307: Add ACPI support
2016-12-19 00:59:07 +01:00
rtc-ds1343.c
rtc: simplify implementations of read_alarm
2016-07-09 10:24:45 +02:00
rtc-ds1347.c
rtc: ds1347: changed raw spi calls to register map calls
2016-09-22 00:14:40 +02:00
rtc-ds1374.c
rtc: ds1374: Merge conditional + WARN_ON()
2016-12-07 16:34:43 +01:00
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: constify rtc_class_ops structures
2016-09-02 01:24:06 +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: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy
2016-07-19 18:18:06 +02:00
rtc-imxdi.c
rtc: imxdi: (trivial) fix a typo
2016-12-07 16:47:47 +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-jz4740.c
rtc: jz4740: make the driver builtin only
2016-11-09 01:37:03 +01:00
rtc-lib.c
rtc: make rtc-lib explicitly non-modular
2016-11-04 23:31:29 +01:00
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: add suspend handlers for alarm IRQ
2016-07-21 20:06:57 +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: Fix whitespace and indentation.
2016-12-19 00:59:25 +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: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
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: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-omap.c
rtc: omap: prevent disabling of clock/module during suspend
2016-11-04 23:11:39 +01:00
rtc-opal.c
powerpc/opal: Add inline function to get rc from an ASYNC_COMP opal_msg
2016-06-29 17:33:18 +10:00
rtc-palmas.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-pcap.c
rtc: drop owner assignment from platform_drivers
2014-10-20 16:21:31 +02:00
rtc-pcf2123.c
rtc: pcf2123: Add missing error code assignment before test
2016-08-31 18:21:34 +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: explicitly set tm_sec = 0 for drivers with minute accurancy
2016-07-19 18:15:21 +02:00
rtc-pcf8583.c
rtc: Drop owner assignment from i2c_driver
2015-09-05 13:19:06 +02:00
rtc-pcf50633.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-pcf85063.c
rtc: pcf85063: do not register a RTC device if chip is not present
2016-11-04 23:08:59 +01:00
rtc-pic32.c
rtc: pic32: Delete owner assignment
2016-08-31 18:21:35 +02:00
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
rtc: pl031: remove misuse of IRQF_NO_SUSPEND flag
2015-11-08 14:12:24 +01:00
rtc-pm8xxx.c
rtc: rtc-pm8xxx: Add support for pm8018 rtc
2016-08-31 09:33:33 +01:00
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-r7301.c
rtc: add support for EPSON TOYOCOM RTC-7301SF/DG
2016-12-19 00:59:21 +01:00
rtc-r9701.c
spi: Drop owner assignment from spi_drivers
2015-10-28 10:30:17 +09:00
rtc-rc5t583.c
rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
2016-07-19 18:15:21 +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: rv8803: set VDETOFF and SWOFF via device tree
2016-10-12 13:24:39 +02:00
rtc-rx4581.c
spi: Drop owner assignment from spi_drivers
2015-10-28 10:30:17 +09:00
rtc-rx6110.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-rx8010.c
rtc: rx8010: change lock mechanism
2017-01-04 23:39:15 +01:00
rtc-rx8025.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +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: constify rtc_class_ops structures
2016-09-02 01:24:06 +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: sparc: make starfire explicitly non-modular
2016-11-04 23:31:31 +01:00
rtc-stk17ta8.c
rtc: remove useless DRV_VERSION
2016-05-20 12:33:51 +02:00
rtc-stmp3xxx.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-sun4v.c
rtc: sparc: make sun4v explicitly non-modular
2016-11-04 23:31:33 +01:00
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: sysfs: fix a cast removing the const attribute
2016-08-31 18:21:35 +02:00
rtc-tegra.c
rtc: constify rtc_class_ops structures
2016-09-02 01:24:06 +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: twl: make driver DT only
2016-11-30 21:21:33 +01:00
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
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: 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