Thomas Gleixner 211e5db19d rtc: mc146818: Detect and handle broken RTCs ... The recent fix for handling the UIP bit unearthed another issue in the RTC code. If the RTC is advertised but the readout is straight 0xFF because it's not available, the old code just proceeded with crappy values, but the new code hangs because it waits for the UIP bit to become low. Add a sanity check in the RTC CMOS probe function which reads the RTC_VALID register (Register D) which should have bit 0-6 cleared. If that's not the case then fail to register the CMOS. Add the same check to mc146818_get_time(), warn once when the condition is true and invalidate the rtc_time data. Reported-by: Mickaël Salaün <mic@digikod.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Mickaël Salaün <mic@linux.microsoft.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/87tur3fx7w.fsf@nanos.tec.linutronix.de		2021-01-27 09:36:22 +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-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-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-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: Detect and handle broken RTCs	2021-01-27 09:36:22 +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
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-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
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
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
rtc-m41t94.c
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
rtc-max6916.c
rtc-max8907.c
rtc-max8925.c
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: Detect and handle broken RTCs	2021-01-27 09:36:22 +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.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-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
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-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
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
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
rtc-s5m.c
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
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