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8853bad7634fe941b9ff4e2de537b249bcf04ddd
linux/drivers/rtc
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Liu Dalin 63df0a22da rtc: loongson: Add missing alarm notifications for ACPI RTC events 
[ Upstream commit 5af9f1fa576874b24627d4c05e3a84672204c200 ]

When an application sets and enables an alarm on Loongson RTC devices,
the alarm notification fails to propagate to userspace because the
ACPI event handler omits calling rtc_update_irq().

As a result, processes waiting via select() or poll() on RTC device
files fail to receive alarm notifications.

The ACPI interrupt is also triggered multiple times. In loongson_rtc_handler,
we need to clear TOY_MATCH0_REG to resolve this issue.

Fixes: 09471d8f5b39 ("rtc: loongson: clear TOY_MATCH0_REG in loongson_rtc_isr()")
Fixes: 1b733a9ebc ("rtc: Add rtc driver for the Loongson family chips")
Signed-off-by: Liu Dalin <liudalin@kylinsec.com.cn>
Reviewed-by: Binbin Zhou <zhoubinbin@loongson.cn>
Link: https://lore.kernel.org/r/20250509084416.7979-1-liudalin@kylinsec.com.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-06-19 15:28:29 +02:00
..
class.c
rtc: Fix offset calculation for .start_secs < 0
2025-06-19 15:27:59 +02:00
dev.c
rtc: Remove unused rtc_dev_exit().
2022-06-24 21:24:02 +02:00
interface.c
rtc: check if __rtc_read_time was successful in rtc_timer_do_work()
2024-12-09 10:32:55 +01:00
Kconfig
rtc: mt6397: select IRQ_DOMAIN instead of depending on it
2024-03-26 18:20:06 -04:00
lib_test.c
rtc: test: Fix invalid format specifier.
2024-03-26 18:19:18 -04:00
lib.c
rtc: Make rtc_time64_to_tm() support dates before 1970
2025-06-19 15:27:59 +02:00
Makefile
rtc: Add rtc driver for the Loongson family chips
2023-06-26 01:19:11 +02:00
nvmem.c
nvmem: add explicit config option to read old syntax fixed OF cells
2024-05-17 12:01:55 +02:00
proc.c
rtc: fix snprintf() checking in is_rtc_hctosys()
2021-05-25 00:36:11 +02:00
rtc-88pm80x.c
rtc: 88pm80x: Convert to platform remove callback returning void
2023-03-17 23:03:16 +01:00
rtc-88pm860x.c
rtc: 88pm860x: Convert to platform remove callback returning void
2023-03-17 23:03:16 +01:00
rtc-ab8500.c
rtc: ab8500: Convert to platform remove callback returning void
2023-03-17 23:03:16 +01:00
rtc-ab-b5ze-s3.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-ab-eoz9.c
rtc: ab-eoz9: don't fail temperature reads on undervoltage notification
2024-12-09 10:32:57 +01:00
rtc-abx80x.c
rtc: abx80x: Fix WDT bit position of the status register
2024-12-09 10:32:55 +01:00
rtc-ac100.c
rtc: ac100: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-armada38x.c
rtc: remove redundant of_match_ptr()
2023-08-10 09:45:41 +02:00
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: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-aspeed.c
rtc: remove redundant of_match_ptr()
2023-08-10 09:45:41 +02:00
rtc-at91rm9200.c
rtc: remove redundant of_match_ptr()
2023-08-10 09:45:41 +02:00
rtc-at91sam9.c
rtc: at91sam9: fix OF node leak in probe() error path
2024-10-10 11:57:57 +02:00
rtc-au1xxx.c
rtc: au1xxx: convert to SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-bd70528.c
rtc: bd70528: Drop BD70528 support
2021-06-20 22:24:52 +02:00
rtc-bq32k.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +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: brcmstb-waketimer: support level alarm_irq
2023-11-20 11:59:30 +01:00
rtc-cadence.c
rtc: cadence: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-cmos.c
rtc: cmos: avoid taking rtc_lock for extended period of time
2024-12-14 20:00:16 +01:00
rtc-core.h
rtc: Remove unused rtc_dev_exit().
2022-06-24 21:24:02 +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: cros-ec: Detect and report supported alarm window size
2023-08-27 23:50:22 +02:00
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: da9063: Mark the alarm IRQ as a wake IRQ
2023-08-17 01:09:50 +02:00
rtc-digicolor.c
rtc: digicolor: quiet maybe-unused variable warning
2021-02-06 00:58:24 +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 unnecessary spi_set_drvdata()
2022-11-15 21:01:51 +01:00
rtc-ds1305.c
rtc: ds1305: Report maximum alarm limit to rtc core
2023-08-27 23:50:22 +02:00
rtc-ds1307.c
rtc: ds1307: stop disabling alarms on probe
2025-06-04 14:42:01 +02:00
rtc-ds1343.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
rtc-ds1347.c
rtc: ds1347: fix value written to century register
2022-11-15 21:01:51 +01:00
rtc-ds1374.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-ds1390.c
rtc: ds1390: mark OF related data as maybe unused
2023-03-17 23:23:22 +01:00
rtc-ds1511.c
rtc: ds1511: remove unused function
2021-04-17 11:21:04 +02:00
rtc-ds1553.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1672.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-ds1685.c
rtc: ds1685: use EXPORT_SYMBOL_GPL for ds1685_rtc_poweroff
2023-08-02 11:18:22 -07:00
rtc-ds1742.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-ds2404.c
rtc: ds2404: Convert to GPIO descriptors
2023-08-17 00:55:56 +02:00
rtc-ds3232.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-efi.c
rtc: efi: Avoid spamming the log on RTC read failure
2023-02-22 21:07:53 +01:00
rtc-em3027.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
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: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-fsl-ftm-alarm.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-ftrtc010.c
rtc: ftrtc010: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-gamecube.c
rtc: gamecube: Always reset HW_SRNPROT after read
2022-08-23 22:27:58 +02:00
rtc-generic.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
rtc-goldfish.c
clocksource/drivers: Add a goldfish-timer clocksource
2022-04-11 11:48:01 +02:00
rtc-hid-sensor-time.c
rtc: hid-sensor-time: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-hym8563.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-imx-sc.c
rtc: imx-sc: remove .read_alarm
2021-04-29 23:03:26 +02:00
rtc-imxdi.c
rtc: imxdi: add wakeup support
2021-05-25 00:41:25 +02:00
rtc-isl1208.c
rtc: isl1208: Fix return value of nvmem callbacks
2024-08-03 08:54:29 +02:00
rtc-isl12022.c
rtc: isl12022: implement support for the #clock-cells DT property
2023-08-16 01:27:01 +02:00
rtc-isl12026.c
rtc: isl12026: Drop "_new" from probe callback name
2023-07-27 23:32:08 +02:00
rtc-jz4740.c
rtc: jz4740: fix Wvoid-pointer-to-enum-cast warning
2023-08-16 01:32:08 +02:00
rtc-loongson.c
rtc: loongson: Add missing alarm notifications for ACPI RTC events
2025-06-19 15:28:29 +02:00
rtc-lp8788.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-lpc24xx.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-lpc32xx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-m41t80.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
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: m48t59: use platform_get_irq_optional
2021-03-11 09:48:09 +01:00
rtc-m48t86.c
rtc: m48t86: add DT support for m48t86
2023-08-28 00:01:51 +02:00
rtc-max6900.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
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
rtc: max8907: Drop unused i2c include
2023-02-01 09:13:35 +01:00
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: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-mc13xxx.c
rtc: mc13xxx: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-mc146818-lib.c
rtc: Extend timeout for waiting for UIP to clear to 1s
2024-01-31 16:18:56 -08:00
rtc-mcp795.c
rtc: mcp795: Add SPI ID table
2021-10-01 23:28:28 +02:00
rtc-meson-vrtc.c
rtc: meson-vrtc: Use ktime_get_real_ts64() to get the current time
2023-03-21 21:15:10 +01:00
rtc-meson.c
rtc: meson: Fix email address in MODULE_AUTHOR
2022-05-18 00:20:39 +02:00
rtc-moxart.c
rtc: moxart: switch to using gpiod API
2023-02-09 23:31:46 +01:00
rtc-mpc5121.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-mpfs.c
rtc: mpfs: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-msc313.c
rtc: msc313: Fix function prototype mismatch in msc313_rtc_probe()
2022-12-11 18:14:01 +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: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-mt7622.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-mv.c
rtc: mv: remove mv_rtc_alarm_ops
2021-01-16 23:19:26 +01:00
rtc-mxc_v2.c
rtc: mxc_v2: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-mxc.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-nct3018y.c
rtc: nct3018y: fix possible NULL dereference
2024-08-29 17:33:39 +02:00
rtc-ntxec.c
rtc: New driver for RTC in Netronix embedded controller
2021-03-10 11:06:33 +00:00
rtc-nxp-bbnsm.c
rtc: bbnsm: Add the bbnsm rtc support
2023-02-22 12:25:32 +01:00
rtc-omap.c
rtc: omap: Do not check for 0 return after calling platform_get_irq()
2023-08-17 01:17:34 +02:00
rtc-opal.c
rtc: opal: switch to RTC_FEATURE_UPDATE_INTERRUPT
2022-03-23 19:58:39 +01:00
rtc-optee.c
rtc: optee: add RTC driver for OP-TEE RTC PTA
2022-03-25 11:42:50 +01:00
rtc-palmas.c
rtc: palmas: Convert to platform remove callback returning void
2023-03-17 23:03:17 +01:00
rtc-pcap.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pcf2123.c
rtc: pcf2123: use IRQ flags obtained from fwnode
2023-02-01 09:13:35 +01:00
rtc-pcf2127.c
rtc: pcf2127: remove useless check
2023-08-27 23:53:06 +02:00
rtc-pcf8523.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-pcf8563.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-pcf8583.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-pcf50633.c
rtc: pcf50633: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-pcf85063.c
rtc: pcf85063: do a SW reset if POR failed
2025-05-02 07:50:57 +02:00
rtc-pcf85363.c
rtc: pcf85363: fix wrong mask/val parameters in regmap_update_bits call
2023-11-20 11:59:30 +01:00
rtc-pic32.c
rtc: pic32: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-pl030.c
amba: Make the remove callback return void
2021-02-02 14:25:50 +01:00
rtc-pl031.c
rtc: pl031: fix rtc features null pointer dereference
2022-03-23 19:58:37 +01:00
rtc-pm8xxx.c
rtc: pm8xxx: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-ps3.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pxa.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-r7301.c
rtc: r7301: Replace spin_lock_irqsave with spin_lock in hard IRQ
2021-02-06 00:50:47 +01:00
rtc-r9701.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rc5t583.c
rtc: rc5t583: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-rc5t619.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rk808.c
rtc: rk808: reduce 'struct rk808' usage
2022-12-11 20:56:33 +01:00
rtc-rp5c01.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rs5c313.c
rtc: rs5c313: correct some spelling mistakes
2022-12-15 23:34:31 +01:00
rtc-rs5c348.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rs5c372.c
rtc: rs5c372: fix Wvoid-pointer-to-enum-cast warning
2023-08-16 01:32:08 +02:00
rtc-rtd119x.c
rtc: rtd119x: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-rv3028.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-rv3029c2.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-rv3032.c
rtc: rv3032: fix EERD location
2025-06-04 14:41:58 +02:00
rtc-rv8803.c
rtc: rv8803: fix Wvoid-pointer-to-enum-cast warning
2023-08-16 01:32:08 +02:00
rtc-rx4581.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-rx6110.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-rx8010.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-rx8025.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-rx8581.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-rzn1.c
rtc: rzn1: fix BCD to rtc_time conversion errors
2024-12-09 10:32:56 +01:00
rtc-s3c.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
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: Drop S5M8763 support
2023-04-26 11:40:26 +01:00
rtc-s35390a.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-sa1100.c
rtc: sa1100: Convert to platform remove callback returning void
2023-03-17 23:03:18 +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: sc27xx: Fix format of SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-sd3078.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-sh.c
rtc: sh: assign correct interrupts with DT
2025-06-19 15:28:28 +02:00
rtc-snvs.c
rtc: snvs: Allow a time difference on clock register read
2022-11-15 21:25:44 +01:00
rtc-spear.c
rtc: spear: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-st-lpc.c
rtc: st-lpc: Use IRQF_NO_AUTOEN flag in request_irq()
2024-12-09 10:32:55 +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: Use NOIRQ_SYSTEM_SLEEP_PM_OPS()
2023-08-17 00:53:00 +02:00
rtc-stmp3xxx.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-sun4v.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sun6i.c
rtc: sun6i: remove unnecessary message
2023-09-06 01:26:04 +02:00
rtc-sunplus.c
rtc: sunplus: Clean up redundant dev_err_probe()
2023-08-10 09:35:28 +02:00
rtc-sunxi.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-tegra.c
rtc: tegra: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-test.c
rtc: test: remove debug message
2020-12-03 23:43:23 +01:00
rtc-ti-k3.c
rtc: Explicitly include correct DT includes
2023-07-27 23:31:29 +02:00
rtc-tps6586x.c
rtc: tps6586x: Report maximum alarm limit to rtc core
2023-08-27 23:50:22 +02:00
rtc-tps65910.c
rtc: tps65910: Remove redundant dev_warn() and do not check for 0 return after calling platform_get_irq()
2023-08-17 01:17:34 +02:00
rtc-twl.c
rtc: twl: remove unnecessary messages
2023-09-06 01:26:04 +02:00
rtc-vt8500.c
rtc: vt8500: Convert to platform remove callback returning void
2023-03-17 23:03:18 +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: wm8350: remove unnecessary messages
2023-09-06 01:26:04 +02:00
rtc-x1205.c
rtc: Switch i2c drivers back to use .probe()
2023-06-06 23:29:37 +02:00
rtc-xgene.c
rtc: xgene: Convert to platform remove callback returning void
2023-03-17 23:03:18 +01:00
rtc-zynqmp.c
rtc: zynqmp: Fix optional clock name property
2025-02-17 09:40:41 +01:00
sysfs.c
rtc: Include <linux/kstrtox.h> when appropriate
2022-11-15 21:01:51 +01:00