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linux/drivers/rtc
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Thomas Gleixner ebb22a0594 rtc: mc146818: Dont test for bit 0-5 in Register D 
The recent change to validate the RTC turned out to be overly tight.

While it cures the problem on the reporters machine it breaks machines
with Intel chipsets which use bit 0-5 of the D register. So check only
for bit 6 being 0 which is the case on these Intel machines as well.

Fixes: 211e5db19d15 ("rtc: mc146818: Detect and handle broken RTCs")
Reported-by: Serge Belyshev <belyshev@depni.sinp.msu.ru>
Reported-by: Dirk Gouders <dirk@gouders.net>
Reported-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Dirk Gouders <dirk@gouders.net>
Tested-by: Len Brown <len.brown@intel.com>
Tested-by: Borislav Petkov <bp@suse.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/87zh0nbnha.fsf@nanos.tec.linutronix.de
2021-02-02 20:35:02 +01:00
..
class.c
RTC for 5.11
2020-12-20 10:12:06 -08:00
dev.c
compat_ioctl: move rtc handling into drivers/rtc/dev.c
2019-10-23 17:23:43 +02:00
interface.c
rtc: interface: fix kerneldoc comments
2019-11-27 09:31:08 +01:00
Kconfig
rtc: mxc{,_v2}: enable COMPILE_TEST
2020-12-03 23:42:36 +01:00
lib.c
rtc: lib: check whether tm->tm_year in int32 range
2019-04-06 15:05:31 +02:00
Makefile
ntp, rtc: Move rtc_set_ntp_time() to ntp code
2020-12-11 10:40:52 +01:00
nvmem.c
rtc: nvmem: emit an error message when nvmem registration fails
2020-11-19 12:50:12 +01:00
proc.c
rtc: core: correct trivial checkpatch warnings
2019-04-04 10:07:08 +02:00
rtc-88pm80x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-88pm860x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ab3100.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ab8500.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ab-b5ze-s3.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ab-eoz9.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-abx80x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ac100.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-armada38x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-as3722.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
rtc-asm9260.c
rtc: asm9260: add the missed check for devm_clk_get
2019-12-23 11:16:23 +01:00
rtc-aspeed.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-at91rm9200.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-at91sam9.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-au1xxx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-bd70528.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-bq32k.c
rtc: Replace HTTP links with HTTPS ones
2020-07-16 11:17:52 +02:00
rtc-bq4802.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
rtc-brcmstb-waketimer.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-cadence.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-cmos.c
rtc: mc146818: Dont test for bit 0-5 in Register D
2021-02-02 20:35:02 +01:00
rtc-coh901331.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-core.h
rtc: move rtc_add_group/s definitions
2018-09-28 14:20:59 +02:00
rtc-cpcap.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-cros-ec.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-da9052.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-da9055.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-da9063.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-davinci.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-digicolor.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-dm355evm.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1216.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-ds1286.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-ds1302.c
rtc: ds1302: Remove unused DRV_NAME
2019-11-15 11:58:14 +01:00
rtc-ds1305.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1307.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1343.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1347.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1374.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1390.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-ds1511.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1553.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1672.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1685.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1742.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds2404.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds3232.c
rtc: add devm_ prefix to rtc_nvmem_register()
2020-11-19 12:50:11 +01:00
rtc-efi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-em3027.c
rtc: em3027: correct month value
2019-11-08 16:14:09 +01:00
rtc-ep93xx.c
rtc: ep93xx: Fix NULL pointer dereference in ep93xx_rtc_read_time
2020-12-03 23:49:31 +01:00
rtc-fm3130.c
RTC for 5.3
2019-07-17 10:03:50 -07:00
rtc-fsl-ftm-alarm.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ftrtc010.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-generic.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
rtc-goldfish.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-hid-sensor-time.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335
2019-06-05 17:37:06 +02:00
rtc-hym8563.c
rtc: hym8563: enable wakeup when applicable
2020-11-14 23:36:10 +01:00
rtc-imx-sc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-imxdi.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-isl1208.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-isl12022.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-isl12026.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-jz4740.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-lp8788.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-lpc24xx.c
rtc: remove unnecessary error message after platform_get_irq
2020-04-15 09:56:17 +02:00
rtc-lpc32xx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ls1x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-m41t80.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-m41t93.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-m41t94.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-m48t35.c
rtc: m48t35: remove SGI-IP27 kludge
2020-03-16 11:12:11 +01:00
rtc-m48t59.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-m48t86.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-max6900.c
rtc: max6900: remove useless indirection
2018-03-17 14:20:46 +01:00
rtc-max6902.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max6916.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max8907.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max8925.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max8997.c
rtc: max8997: Fix the returned value in case of error in 'max8997_rtc_read_alarm()'
2018-11-22 18:11:35 +01:00
rtc-max8998.c
rtc: maxim: Add SPDX license identifiers
2018-08-14 23:38:45 +02:00
rtc-max77686.c
rtc: max77686: Fix wake-ups for max77620
2020-08-07 23:29:47 +02:00
rtc-mc13xxx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mc146818-lib.c
rtc: mc146818: Dont test for bit 0-5 in Register D
2021-02-02 20:35:02 +01:00
rtc-mcp795.c
rtc: Replace HTTP links with HTTPS ones
2020-07-16 11:17:52 +02:00
rtc-meson-vrtc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-meson.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-moxart.c
rtc: moxart: Convert to SPDX identifier
2019-12-23 11:23:49 +01:00
rtc-mpc5121.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mrst.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-msm6242.c
rtc: msm6242: Remove unneeded msm6242_set()/msm6242_clear() functions
2019-11-18 15:23:54 +01:00
rtc-mt2712.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mt6397.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mt7622.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-mv.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mxc_v2.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mxc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-omap.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-opal.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114
2019-05-24 17:39:01 +02:00
rtc-palmas.c
…
rtc-pcap.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pcf2123.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pcf2127.c
rtc: pcf2127: only use watchdog when explicitly available
2020-12-19 01:57:44 +01:00
rtc-pcf8523.c
rtc: pcf8523: use BIT
2020-11-19 12:52:25 +01:00
rtc-pcf8563.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pcf8583.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-pcf50633.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-pcf85063.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pcf85363.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pic32.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pl030.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pl031.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pm8xxx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ps3.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pxa.c
rtc: Remove dev_err() usage after platform_get_irq()
2019-08-13 10:53:10 +02:00
rtc-r7301.c
rtc: Use devm_platform_ioremap_resource()
2019-10-06 21:04:51 +02:00
rtc-r9701.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rc5t583.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
rtc-rc5t619.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rk808.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rp5c01.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rs5c313.c
rtc: rtc-rs5c313: Convert to module_platform_driver()
2020-08-21 00:13:44 +02:00
rtc-rs5c348.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rs5c372.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-rtd119x.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-rv3028.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rv3029c2.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rv3032.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rv8803.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rx4581.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-rx6110.c
rtc: rx6110: add i2c support
2020-11-17 20:30:30 +01:00
rtc-rx8010.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rx8025.c
rtc: rx8025: Remove struct i2c_client from struct rx8025_data
2019-12-23 11:22:21 +01:00
rtc-rx8581.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-s3c.c
rtc: s3c: Remove dead code related to periodic tick handling
2020-12-03 23:51:30 +01:00
rtc-s3c.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-s5m.c
rtc: s5m: convert to i2c_new_dummy_device
2019-07-23 20:34:31 +02:00
rtc-s35390a.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sa1100.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sa1100.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rtc-sc27xx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sd3078.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sh.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sirfsoc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-snvs.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-spear.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-st-lpc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-starfire.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-stk17ta8.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-stm32.c
rtc: stm32: add missed clk_disable_unprepare in error path of resume
2019-12-10 14:29:23 +01:00
rtc-stmp3xxx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sun4v.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sun6i.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sunxi.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-tegra.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-test.c
rtc: test: remove debug message
2020-12-03 23:43:23 +01:00
rtc-tps6586x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-tps65910.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-tps80031.c
…
rtc-twl.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-tx4939.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-v3020.c
rtc: v3020: remove set but unused variable
2019-11-27 09:31:13 +01:00
rtc-vr41xx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-vt8500.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-wilco-ec.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-wm831x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-wm8350.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-x1205.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-xgene.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-zynqmp.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
sysfs.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00