linux/drivers/rtc
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: 211e5db19d ("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
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-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
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
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-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
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
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
rtc-goldfish.c rtc: rework rtc_register_device() resource management 2020-11-19 12:50:12 +01:00
rtc-hid-sensor-time.c
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-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-max8998.c
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
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
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
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
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
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
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