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72dd71f0dae47183efdf92279927ff26f0ed9f3f
linux-st/drivers/rtc
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Jeffy Chen 72dd71f0da rtc: cros-ec: return -ETIME when refused to set alarms in the past 
Since accessing a Chrome OS EC based rtc is a slow operation, there is a
race window where if the alarm is set for the next second and the second
ticks over right before calculating the alarm offset.

In this case the current driver is setting a 0-second alarm, which would
be considered as disabling alarms by the EC(EC_RTC_ALARM_CLEAR).

This breaks, e.g., hwclock which relies on RTC_UIE_ON ->
rtc_update_irq_enable(), which sets a 1-second alarm and expects it to
fire an interrupt.

So return -ETIME when the alarm is in the past, follow __rtc_set_alarm().

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-03-17 14:20:53 +01:00
..
class.c
rtc: remove nvmem_config
2018-03-01 10:49:23 +01:00
hctosys.c
…
interface.c
rtc: Add tracepoints for RTC system
2018-02-13 21:30:22 +01:00
Kconfig
rtc: at91sam: add 'depends on HAS_IOMEM' to fix unmet dependency
2018-03-17 14:20:52 +01:00
Makefile
rtc: isl12026: new driver.
2018-03-17 14:20:51 +01:00
nvmem.c
rtc: export rtc_nvmem_register() to drivers
2018-03-01 10:49:15 +01:00
rtc-88pm80x.c
…
rtc-88pm860x.c
…
rtc-ab3100.c
rtc: stop validating rtc_time after rtc_time64_to_tm
2018-03-01 10:49:41 +01:00
rtc-ab8500.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-ab-b5ze-s3.c
rtc: ab-b5ze-s3: stop validating rtc_time in .read_time
2018-03-02 10:09:59 +01:00
rtc-abx80x.c
rtc: abx80x: remove useless message
2018-03-02 10:12:23 +01:00
rtc-ac100.c
rtc: ac100: Fix ac100 determine rate bug
2018-03-17 14:20:50 +01:00
rtc-armada38x.c
rtc: armada38x: add support for trimming the RTC
2017-10-25 23:05:52 +02:00
rtc-as3722.c
…
rtc-asm9260.c
…
rtc-at91rm9200.c
rtc: at91rm9200: fix reading alarm value
2017-11-10 16:24:32 +01:00
rtc-at91rm9200.h
…
rtc-at91sam9.c
…
rtc-au1xxx.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-bfin.c
…
rtc-bq32k.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-bq4802.c
…
rtc-brcmstb-waketimer.c
rtc: brcmstb-waketimer: Set wktmr prescaler
2018-03-17 14:20:51 +01:00
rtc-cmos.c
rtc: cmos: let the core handle invalid time
2018-03-01 10:49:39 +01:00
rtc-coh901331.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-core.h
rtc: export rtc_nvmem_register() to drivers
2018-03-01 10:49:15 +01:00
rtc-cpcap.c
rtc: cpcap: stop validating rtc_time in .read_time
2018-03-02 10:09:59 +01:00
rtc-cros-ec.c
rtc: cros-ec: return -ETIME when refused to set alarms in the past
2018-03-17 14:20:53 +01:00
rtc-da9052.c
rtc: diasemi: stop validating rtc_time in .read_time
2018-03-02 10:11:02 +01:00
rtc-da9055.c
rtc: diasemi: stop validating rtc_time in .read_time
2018-03-02 10:11:02 +01:00
rtc-da9063.c
rtc: diasemi: stop validating rtc_time in .read_time
2018-03-02 10:11:02 +01:00
rtc-davinci.c
…
rtc-dev.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
rtc-digicolor.c
…
rtc-dm355evm.c
…
rtc-ds1216.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1286.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1302.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1305.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1307.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1343.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1347.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1374.c
…
rtc-ds1390.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1511.c
rtc: ds1511: let the core handle invalid time
2018-03-01 10:49:38 +01:00
rtc-ds1553.c
rtc: ds1553: let the core handle invalid time
2018-03-01 10:49:39 +01:00
rtc-ds1672.c
rtc: constify i2c_device_id
2017-09-01 01:10:11 +02:00
rtc-ds1685.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds1742.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds2404.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ds3232.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-efi-platform.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rtc-efi.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-em3027.c
rtc: constify i2c_device_id
2017-09-01 01:10:11 +02:00
rtc-ep93xx.c
…
rtc-fm3130.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-ftrtc010.c
…
rtc-generic.c
…
rtc-goldfish.c
rtc: goldfish: Add missing MODULE_LICENSE
2018-02-13 21:46:04 +01:00
rtc-hid-sensor-time.c
…
rtc-hym8563.c
…
rtc-imxdi.c
…
rtc-isl1208.c
rtc: isl1208: Fix unintended clear of SR bits
2018-03-01 10:49:36 +01:00
rtc-isl12022.c
rtc: isl12022: remove useless indirection
2018-03-02 10:12:19 +01:00
rtc-isl12026.c
rtc: isl12026: fixup nvmem registration
2018-03-17 14:20:51 +01:00
rtc-jz4740.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-lib.c
rtc: fix rtc_time64_to_tm for 3477
2018-03-17 14:20:50 +01:00
rtc-lp8788.c
…
rtc-lpc24xx.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-lpc32xx.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-ls1x.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-m41t80.c
rtc: m41t80: remove useless indirection
2018-03-17 14:20:48 +01:00
rtc-m41t93.c
rtc: m41t93: stop validating rtc_time in .read_time
2018-03-02 10:12:19 +01:00
rtc-m41t94.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-m48t35.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-m48t59.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-m48t86.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-max6900.c
rtc: max6900: remove useless indirection
2018-03-17 14:20:46 +01:00
rtc-max6902.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-max6916.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-max8907.c
…
rtc-max8925.c
…
rtc-max8997.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-max8998.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-max77686.c
rtc: max77686: stop validating rtc_time in .read_time
2018-03-02 10:12:20 +01:00
rtc-mc13xxx.c
rtc: stop validating rtc_time after rtc_time64_to_tm
2018-03-01 10:49:41 +01:00
rtc-mc146818-lib.c
…
rtc-mcp795.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-moxart.c
…
rtc-mpc5121.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-mrst.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-msm6242.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-mt6397.c
…
rtc-mt7622.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-mv.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-mxc_v2.c
rtc: mxc_v2: Fix _iomem pointer notation
2018-03-01 10:49:36 +01:00
rtc-mxc.c
…
rtc-nuc900.c
rtc: nuc900: stop validating rtc_time in .read_time
2018-03-02 10:12:17 +01:00
rtc-omap.c
rtc: omap: stop validating rtc_time in .set_time and .set_alarm
2018-03-02 10:12:21 +01:00
rtc-opal.c
rtc-opal: Fix handling of firmware error codes, prevent busy loops
2018-01-27 21:15:59 +11:00
rtc-palmas.c
…
rtc-pcap.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-pcf2123.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-pcf2127.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-pcf8523.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-pcf8563.c
rtc: pcf8563: don't alway enable the alarm
2017-11-09 01:16:36 +01:00
rtc-pcf8583.c
…
rtc-pcf50633.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-pcf85063.c
rtc: pcf85063: remove useless indirection
2018-03-17 14:20:47 +01:00
rtc-pcf85363.c
rtc: pcf85363: set time accurately
2018-03-17 14:20:49 +01:00
rtc-pic32.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-pl030.c
…
rtc-pl031.c
rtc: pl031: make interrupt optional
2017-10-12 16:30:30 +02:00
rtc-pm8xxx.c
rtc: pm8xxx: Fix issue in RTC write path
2018-03-17 14:20:52 +01:00
rtc-proc.c
…
rtc-ps3.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-puv3.c
…
rtc-pxa.c
…
rtc-r7301.c
rtc: r7301: stop validating rtc_time in .read_time
2018-03-02 10:12:18 +01:00
rtc-r9701.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-rc5t583.c
…
rtc-rk808.c
rtc: rk808: fix possible race condition
2018-03-17 14:20:42 +01:00
rtc-rp5c01.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-rs5c313.c
…
rtc-rs5c348.c
rtc: rs5c348: let the core handle invalid time
2018-03-01 10:49:40 +01:00
rtc-rs5c372.c
rtc: rs5c372: remove useless indirection
2018-03-17 14:20:45 +01:00
rtc-rtd119x.c
rtc: Add Realtek RTD1295
2017-09-05 09:55:02 +02:00
rtc-rv3029c2.c
rtc: rv3029: Clean up error handling in rv3029_eeprom_write()
2017-10-12 16:24:19 +02:00
rtc-rv8803.c
rtc: rv8803: fix possible race condition
2018-03-01 10:49:23 +01:00
rtc-rx4581.c
rtc: rx4581: remove useless message
2018-03-02 10:12:24 +01:00
rtc-rx6110.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-rx8010.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-rx8025.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-rx8581.c
rtc: rx8581: remove useless message
2018-03-02 10:12:24 +01:00
rtc-s3c.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-s3c.h
…
rtc-s5m.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-s35390a.c
rtc: s35390a: remove useless indirection
2018-03-17 14:20:44 +01:00
rtc-sa1100.c
…
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: sc27xx: stop validating rtc_time in .read_time
2018-03-02 10:12:18 +01:00
rtc-sh.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-sirfsoc.c
rtc: sirfsoc: remove useless sirfsoc_rtc_ioctl
2018-03-01 10:49:27 +01:00
rtc-snvs.c
…
rtc-spear.c
rtc: spear: stop validating rtc_time in .set_time and .set_alarm
2018-03-02 10:12:21 +01:00
rtc-st-lpc.c
…
rtc-starfire.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-stk17ta8.c
rtc: stk17ta8: let the core handle invalid time
2018-03-01 10:49:40 +01:00
rtc-stm32.c
rtc: stm32: Fix copyright
2017-11-29 22:20:56 +01:00
rtc-stmp3xxx.c
…
rtc-sun4v.c
…
rtc-sun6i.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-sunxi.c
rtc: stop validating rtc_time in .read_time
2018-03-02 10:09:58 +01:00
rtc-sysfs.c
rtc: sysfs: Use time64_t variables to set time/alarm
2017-11-10 09:57:38 +01:00
rtc-tegra.c
rtc: tegra: stop validating rtc_time in .set_time
2018-03-02 10:12:22 +01:00
rtc-test.c
…
rtc-tile.c
…
rtc-tps6586x.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-tps65910.c
…
rtc-tps80031.c
…
rtc-twl.c
mfd: twl: Move header file out of I2C realm
2017-09-04 14:41:02 +01:00
rtc-tx4939.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-v3020.c
…
rtc-vr41xx.c
…
rtc-vt8500.c
…
rtc-wm831x.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-wm8350.c
…
rtc-x1205.c
…
rtc-xgene.c
rtc: stop validating rtc_time after rtc_time_to_tm
2018-03-01 10:49:41 +01:00
rtc-zynqmp.c
rtc: stop validating rtc_time after rtc_time64_to_tm
2018-03-01 10:49:41 +01:00
systohc.c
rtc: Allow rtc drivers to specify the tv_nsec value for ntp
2017-10-30 15:03:24 -07:00