A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-16 01:33:10 -04:00
Code Issues Projects Releases Packages Wiki Activity
android_kernel_motorola_sm6375/drivers/rtc
History
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Pratyush Anand 970fc7f4af rtc: cmos: Initialize hpet timer before irq is registered 
We have observed on few x86 machines with rtc-cmos device that
hpet_rtc_interrupt() is called just after irq registration and before
cmos_do_probe() could call hpet_rtc_timer_init().

So, neither hpet_default_delta nor hpet_t1_cmp is initialized by the time
interrupt is raised in the given situation, and this results in NMI
watchdog LOCKUP.

It has only been observed sporadically on kdump secondary kernels.

See the call trace:
---<-snip->---
[   27.913194] Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 0
[   27.915371] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.0-342.el7.x86_64 #1
[   27.917503] Hardware name: HP ProLiant DL160 Gen8, BIOS J03 02/10/2014
[   27.919455]  ffffffff8186a728 0000000059c82488 ffff880034e05af0 ffffffff81637bd4
[   27.921870]  ffff880034e05b70 ffffffff8163144a 0000000000000010 ffff880034e05b80
[   27.924257]  ffff880034e05b20 0000000059c82488 0000000000000000 0000000000000000
[   27.926599] Call Trace:
[   27.927352]  <NMI>  [<ffffffff81637bd4>] dump_stack+0x19/0x1b
[   27.929080]  [<ffffffff8163144a>] panic+0xd8/0x1e7
[   27.930588]  [<ffffffff8111d3e0>] ? restart_watchdog_hrtimer+0x50/0x50
[   27.932502]  [<ffffffff8111d4a2>] watchdog_overflow_callback+0xc2/0xd0
[   27.934427]  [<ffffffff811612c1>] __perf_event_overflow+0xa1/0x250
[   27.936232]  [<ffffffff81161d94>] perf_event_overflow+0x14/0x20
[   27.937957]  [<ffffffff81032ae8>] intel_pmu_handle_irq+0x1e8/0x470
[   27.939799]  [<ffffffff8164164b>] perf_event_nmi_handler+0x2b/0x50
[   27.941649]  [<ffffffff81640d99>] nmi_handle.isra.0+0x69/0xb0
[   27.943348]  [<ffffffff81640f49>] do_nmi+0x169/0x340
[   27.944802]  [<ffffffff816401d3>] end_repeat_nmi+0x1e/0x2e
[   27.946424]  [<ffffffff81056ee5>] ? hpet_rtc_interrupt+0x85/0x380
[   27.948197]  [<ffffffff81056ee5>] ? hpet_rtc_interrupt+0x85/0x380
[   27.949992]  [<ffffffff81056ee5>] ? hpet_rtc_interrupt+0x85/0x380
[   27.951816]  <<EOE>>  <IRQ>  [<ffffffff8108f5a3>] ? run_timer_softirq+0x43/0x340
[   27.954114]  [<ffffffff8111e24e>] handle_irq_event_percpu+0x3e/0x1e0
[   27.955962]  [<ffffffff8111e42d>] handle_irq_event+0x3d/0x60
[   27.957635]  [<ffffffff811210c7>] handle_edge_irq+0x77/0x130
[   27.959332]  [<ffffffff8101704f>] handle_irq+0xbf/0x150
[   27.960949]  [<ffffffff8164a86f>] do_IRQ+0x4f/0xf0
[   27.962434]  [<ffffffff8163faed>] common_interrupt+0x6d/0x6d
[   27.964101]  <EOI>  [<ffffffff8163f43b>] ? _raw_spin_unlock_irqrestore+0x1b/0x40
[   27.966308]  [<fffff8111ff07>] __setup_irq+0x2a7/0x570
[   28.067859]  [<ffffffff81056e60>] ? hpet_cpuhp_notify+0x140/0x140
[   28.069709]  [<ffffffff8112032c>] request_threaded_irq+0xcc/0x170
[   28.071585]  [<ffffffff814b24a6>] cmos_do_probe+0x1e6/0x450
[   28.073240]  [<ffffffff814b2710>] ? cmos_do_probe+0x450/0x450
[   28.074911]  [<ffffffff814b27cb>] cmos_pnp_probe+0xbb/0xc0
[   28.076533]  [<ffffffff8139b245>] pnp_device_probe+0x65/0xd0
[   28.078198]  [<ffffffff813f8ca7>] driver_probe_device+0x87/0x390
[   28.079971]  [<ffffffff813f9083>] __driver_attach+0x93/0xa0
[   28.081660]  [<ffffffff813f8ff0>] ? __device_attach+0x40/0x40
[   28.083662]  [<ffffffff813f6a13>] bus_for_each_dev+0x73/0xc0
[   28.085370]  [<ffffffff813f86fe>] driver_attach+0x1e/0x20
[   28.086974]  [<ffffffff813f8250>] bus_add_driver+0x200/0x2d0
[   28.088634]  [<ffffffff81ade49a>] ? rtc_sysfs_init+0xe/0xe
[   28.090349]  [<ffffffff813f9704>] driver_register+0x64/0xf0
[   28.091989]  [<ffffffff8139b070>] pnp_register_driver+0x20/0x30
[   28.093707]  [<ffffffff81ade4ab>] cmos_init+0x11/0x71
---<-snip->---

This patch moves hpet_rtc_timer_init() before IRQ registration, so that we
can gracefully handle such spurious interrupts. It also masks HPET RTC
interrupts, in case IRQ registration fails.

We were able to reproduce the problem in maximum 15 trials of kdump
secondary kernel boot on an hp-dl160gen8 FCoE host machine without this
patch.  However, more than 35 trials went fine after applying this patch.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Pratyush Anand <panand@redhat.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-09-20 00:22:00 +02:00
..
class.c rtc: make class.c explicitly non-modular 2016-03-14 17:08:18 +01:00
hctosys.c
interface.c rtc: fix a typo and reduce three empty lines to one 2016-07-11 23:22:35 +02:00
Kconfig rtc: asm9260: allow COMPILE_TEST 2016-09-05 17:15:50 +02:00
Makefile rtc: isl12057: remove driver 2016-08-31 18:21:34 +02:00
rtc-88pm80x.c
rtc-88pm860x.c
rtc-ab-b5ze-s3.c
rtc-ab3100.c
rtc-ab8500.c rtc: ab8500: remove misuse of IRQF_NO_SUSPEND flag 2015-11-08 14:12:25 +01:00
rtc-abx80x.c rtc: abx80x: use devm_add_action_or_reset() 2016-07-19 17:27:42 +02:00
rtc-ac100.c rtc: ac100: support clock-output-names in device tree binding 2016-08-31 18:23:50 +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: rework locking 2016-09-05 17:15:59 +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-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-cmos.c rtc: cmos: Initialize hpet timer before irq is registered 2016-09-20 00:22:00 +02:00
rtc-coh901331.c rtc: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
rtc-core.h
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-digicolor.c rtc: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
rtc-dm355evm.c
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 Intersil ISL12057 support 2016-08-31 18:21:34 +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-efi.c rtc: efi: Fail probing if RTC reads don't work 2016-06-06 17:07:33 +02:00
rtc-em3027.c
rtc-ep93xx.c rtc: remove useless DRV_VERSION 2016-05-20 12:33:51 +02:00
rtc-fm3130.c
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-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: 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-jz4740.c rtc: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
rtc-lib.c
rtc-lp8788.c
rtc-lpc24xx.c
rtc-lpc32xx.c rtc: lpc32xx: remove irq > NR_IRQS check from probe() 2016-01-11 20:19:59 +01:00
rtc-ls1x.c
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-max8925.c
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-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: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
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-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: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
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-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-pcf50633.c rtc: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
rtc-pcf85063.c rtc: pcf85063: Add support for the PCF85063A device 2016-07-19 19:11:54 +02:00
rtc-pic32.c rtc: pic32: Delete owner assignment 2016-08-31 18:21:35 +02:00
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
rtc-proc.c rtc: fix module reference count in rtc-proc 2016-01-11 20:19:55 +01:00
rtc-ps3.c
rtc-puv3.c
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: 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: Clear V1F when setting the time 2016-07-28 09:59:43 +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: simplify implementations of read_alarm 2016-07-09 10:24:45 +02:00
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-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-starfire.c
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-sun6i.c
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
rtc-tile.c
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: constify rtc_class_ops structures 2016-09-02 01:24:06 +02:00
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-zynqmp.c rtc: zynqmp: Update seconds time programming logic 2016-05-20 12:33:51 +02:00
systohc.c