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linux/drivers/rtc
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Thomas Gleixner b0ecd8e8c5 rtc: cmos: Make rtc_cmos sync offset correct 
The offset for rtc_cmos must be -500ms to work correctly with the current
implementation of rtc_set_ntp_time() due to the following:

  tsched       twrite(t2.tv_sec - 1) 	 t2 (seconds increment)

twrite - tsched is the transport time for the write to hit the device,
which is negligible for this chip because it's accessed directly.

t2 - twrite = 500ms according to the datasheet.

But rtc_set_ntp_time() calculation of tsched is:

    tsched = t2 - 1sec - (t2 - twrite)

The default for the sync offset is 500ms which means that the write happens
at t2 - 1.5 seconds which is obviously off by a second for this device.

Make the offset -500ms so it works correct.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201206220541.830517160@linutronix.de
2020-12-11 10:40:52 +01:00
..
class.c
rtc: class: remove redundant assignment to variable err
2020-04-02 18:47:30 +02:00
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: rv3032: Add a driver for Microcrystal RV-3032
2020-10-19 22:47:56 +02:00
lib.c
rtc: lib: check whether tm->tm_year in int32 range
2019-04-06 15:05:31 +02:00
Makefile
rtc: rv3032: Add a driver for Microcrystal RV-3032
2020-10-19 22:47:56 +02:00
nvmem.c
rtc: core: correct trivial checkpatch warnings
2019-04-04 10:07:08 +02:00
proc.c
rtc: core: correct trivial checkpatch warnings
2019-04-04 10:07:08 +02:00
rtc-88pm80x.c
rtc: remove superfluous error message
2019-08-21 09:57:23 +02:00
rtc-88pm860x.c
rtc: 88pm860x: remove useless range check
2020-04-18 22:42:06 +02:00
rtc-ab3100.c
rtc: ab3100: convert to SPDX identifier
2019-04-11 16:42:55 +02:00
rtc-ab8500.c
rtc: ab8500: switch to rtc_time64_to_tm/rtc_tm_to_time64
2020-03-16 11:12:11 +01:00
rtc-ab-b5ze-s3.c
rtc: Replace HTTP links with HTTPS ones
2020-07-16 11:17:52 +02:00
rtc-ab-eoz9.c
rtc: remove superfluous error message
2019-08-21 09:57:23 +02:00
rtc-abx80x.c
rtc: abx80x: Provide debug feedback for invalid dt properties
2020-06-06 00:16:24 +02:00
rtc-ac100.c
rtc: remove superfluous error message
2019-08-21 09:57:23 +02:00
rtc-armada38x.c
rtc: armada38x: Use of_device_get_match_data()
2019-10-07 15:49:20 +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: add the missed check for devm_clk_get
2019-12-23 11:16:23 +01:00
rtc-aspeed.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-at91rm9200.c
rtc: at91rm9200: use FIELD_PREP/FIELD_GET
2020-01-15 15:11:10 +01:00
rtc-at91sam9.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-au1xxx.c
rtc: au1xxx: switch to rtc_time64_to_tm/rtc_tm_to_time64
2020-03-16 11:12:09 +01:00
rtc-bd70528.c
rtc: bd70528: Avoid double error messaging when IRQ absent
2020-03-23 09:27:17 +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: brcmstb-waketimer: add missed clk_disable_unprepare
2019-11-08 16:14:09 +01:00
rtc-cadence.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-cmos.c
rtc: cmos: Make rtc_cmos sync offset correct
2020-12-11 10:40:52 +01:00
rtc-coh901331.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-core.h
rtc: move rtc_add_group/s definitions
2018-09-28 14:20:59 +02:00
rtc-cpcap.c
rtc: cpcap: fix range
2020-07-02 22:32:00 +02:00
rtc-cros-ec.c
cros_ec: treewide: Remove 'include/linux/mfd/cros_ec.h'
2020-01-07 17:36:46 +01:00
rtc-da9052.c
rtc: da9052: switch to rtc_time64_to_tm/rtc_tm_to_time64
2020-04-01 12:33:43 +02:00
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: Handle invalid IRQ from platform_get_irq_byname()
2019-10-07 15:49:18 +02:00
rtc-davinci.c
rtc: davinci: remove useless error handling
2020-03-16 11:12:09 +01:00
rtc-digicolor.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-dm355evm.c
rtc: dm355evm: convert to SPDX identifier
2019-04-04 10:07:09 +02:00
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: ds1305: switch to rtc_tm_to_time64
2020-03-16 11:12:10 +01:00
rtc-ds1307.c
rtc: ds1307: enable rx8130's backup battery, make it chargeable optionally
2020-09-24 09:56:04 +02:00
rtc-ds1343.c
rtc: ds1343: Remove unused struct spi_device in struct ds1343_priv
2019-12-23 11:22:32 +01:00
rtc-ds1347.c
rtc: ds1347: handle century register
2019-10-07 15:49:38 +02:00
rtc-ds1374.c
rtc: ds1374: remove unused define
2020-07-21 09:56:46 +02:00
rtc-ds1390.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-ds1511.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-ds1553.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-ds1672.c
rtc: ds1672: remove unnecessary check
2019-08-21 09:57:23 +02:00
rtc-ds1685.c
rtc: ds1685: Fix bank switching to avoid endless loop
2020-09-15 11:24:29 +02:00
rtc-ds1742.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-ds2404.c
rtc: ds2404: use hw endiannes variable
2019-05-23 17:42:25 +02:00
rtc-ds3232.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
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: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-fm3130.c
RTC for 5.3
2019-07-17 10:03:50 -07:00
rtc-fsl-ftm-alarm.c
rtc: fsl-ftm-alarm: update acpi device id
2020-08-21 00:20:38 +02:00
rtc-ftrtc010.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
rtc-generic.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
rtc-goldfish.c
rtc: goldfish: Enable interrupt in set_alarm() when necessary
2020-07-16 11:15:43 +02:00
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: Read the valid flag directly instead of caching it
2019-12-23 11:18:06 +01:00
rtc-imx-sc.c
rtc: imx-sc: Align imx sc msg structs to 4
2020-03-29 22:08:35 +02:00
rtc-imxdi.c
rtc: imxdi: fix trivial typos
2020-07-02 22:32:01 +02:00
rtc-isl1208.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-isl12022.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-isl12026.c
rtc: isl12026: convert to i2c_new_dummy_device
2019-07-22 22:30:19 +02:00
rtc-jz4740.c
rtc: ingenic: Reset regulator register in probe
2020-05-11 16:35:05 +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: remove unnecessary error message after platform_get_irq
2020-04-15 09:56:17 +02:00
rtc-lpc32xx.c
rtc: lpc32xx: remove .remove
2019-11-08 16:14:09 +01:00
rtc-ls1x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-m41t80.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-m48t86.c
rtc: Use devm_platform_ioremap_resource()
2019-10-06 21:04:51 +02:00
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: mc13xxx: fix a double-unlock issue
2020-05-11 16:21:50 +02:00
rtc-mc146818-lib.c
rtc: mc146818: Reduce spinlock section in mc146818_set_time()
2020-12-11 10:40:52 +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: meson: simplify the return expression of meson_vrtc_probe
2020-09-29 22:19:15 +02:00
rtc-meson.c
rtc: meson: remove redundant assignment to variable retries
2019-11-27 09:31:13 +01:00
rtc-moxart.c
rtc: moxart: Convert to SPDX identifier
2019-12-23 11:23:49 +01:00
rtc-mpc5121.c
rtc: mpc5121: Use correct return value for mpc5121_rtc_probe()
2020-05-30 04:12:38 +02:00
rtc-mrst.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
rtc-msm6242.c
rtc: msm6242: Remove unneeded msm6242_set()/msm6242_clear() functions
2019-11-18 15:23:54 +01:00
rtc-mt2712.c
rtc: mt2712: switch to devm_platform_ioremap_resource
2020-04-18 22:42:04 +02:00
rtc-mt6397.c
rtc: mt6397: Remove unused member dev
2020-10-15 12:01:29 +02:00
rtc-mt7622.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-mv.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-mxc_v2.c
rtc: mxc_v2: use devm_platform_ioremap_resource() to simplify code
2019-07-22 22:16:12 +02:00
rtc-mxc.c
rtc: mxc: Use devm_add_action_or_reset() for calls to clk_disable_unprepare()
2020-03-22 22:10:41 +01:00
rtc-omap.c
rtc: omap: drop unused dt-bindings header
2020-03-23 09:27:17 +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: constify rtc_class_ops structures
2016-09-02 01:24:06 +02:00
rtc-pcap.c
rtc: pcap: convert to SPDX identifier
2019-05-08 22:14:36 +02:00
rtc-pcf2123.c
rtc: pcf2123: add proper compatible string
2019-08-20 21:42:19 +02:00
rtc-pcf2127.c
rtc: pcf2127: fix a bug when not specify interrupts property
2020-09-15 12:25:44 +02:00
rtc-pcf8523.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
rtc-pcf8563.c
rtc: pcf8563: Use BIT
2019-12-23 11:23:53 +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
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
rtc-pcf85363.c
rtc: pcf85363/pcf85263: fix regmap error in set_time
2019-09-01 08:48:28 +02:00
rtc-pic32.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-pl030.c
rtc: pl030: switch to rtc_time64_to_tm/rtc_tm_to_time64
2020-03-16 11:12:09 +01:00
rtc-pl031.c
rtc: pl031: fix set_alarm by adding back call to alarm_irq_enable
2020-07-16 11:27:03 +02:00
rtc-pm8xxx.c
rtc: pm8xxx: clear alarm register when alarm is not enabled
2020-03-23 09:27:17 +01:00
rtc-ps3.c
rtc: ps3: set range
2019-04-04 10:07:10 +02:00
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: r9701: set range
2020-10-19 22:48:55 +02:00
rtc-rc5t583.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
rtc-rc5t619.c
rtc: rc5t619: Fix an ERR_PTR vs NULL check
2020-04-15 09:58:24 +02:00
rtc-rk808.c
rtc: Remove dev_err() usage after platform_get_irq()
2019-08-13 10:53:10 +02:00
rtc-rp5c01.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
rtc-rs5c313.c
rtc: rtc-rs5c313: Convert to module_platform_driver()
2020-08-21 00:13:44 +02:00
rtc-rs5c348.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
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: rv3028: ensure ram configuration registers are saved
2020-10-15 12:09:35 +02:00
rtc-rv3029c2.c
rtc: rv3029: remove useless error messages
2019-12-23 11:16:23 +01:00
rtc-rv3032.c
rtc: rv3032: Add a driver for Microcrystal RV-3032
2020-10-19 22:47:56 +02:00
rtc-rv8803.c
rtc: rv8803: simplify the return expression of rv8803_nvram_write
2020-09-29 22:20:10 +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: rx6110: Convert to SPDX identifier
2019-11-15 11:58:12 +01:00
rtc-rx8010.c
rtc: rx8010: rename rx8010_init_client() to rx8010_init()
2020-09-29 22:18:10 +02:00
rtc-rx8025.c
rtc: rx8025: Remove struct i2c_client from struct rx8025_data
2019-12-23 11:22:21 +01:00
rtc-rx8581.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-s3c.c
rtc: s3c: Simplify with dev_err_probe()
2020-09-15 10:42:36 +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: convert to i2c_new_dummy_device
2019-07-23 20:34:31 +02:00
rtc-s35390a.c
rtc: s35390a: set range
2019-10-19 22:33:05 +02:00
rtc-sa1100.c
rtc: sa1100: switch to rtc_time64_to_tm/rtc_tm_to_time64
2020-03-16 11:12:09 +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: remove .remove
2019-11-08 16:14:09 +01:00
rtc-sd3078.c
rtc: remove superfluous error message
2019-08-21 09:57:23 +02:00
rtc-sh.c
rtc: sh: Restore devm_ioremap() alignment
2020-02-12 12:21:40 +01:00
rtc-sirfsoc.c
rtc: sirfsoc: switch to rtc_time64_to_tm/rtc_tm_to_time64
2020-03-16 11:12:09 +01:00
rtc-snvs.c
rtc: snvs: Add necessary clock operations for RTC APIs
2020-05-30 03:17:48 +02:00
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: st-lpc: Constify st_rtc_ops
2020-09-15 11:21:50 +02:00
rtc-starfire.c
rtc: starfire: switch to rtc_time64_to_tm
2020-03-16 11:12:09 +01:00
rtc-stk17ta8.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
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
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
rtc-sun4v.c
rtc: sun4v: switch to SPDX identifier
2019-04-04 10:07:10 +02:00
rtc-sun6i.c
rtc: sun6i: let the core handle rtc range
2020-04-02 18:47:29 +02:00
rtc-sunxi.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-tegra.c
rtc: tegra: remove set but unused variable
2019-11-27 09:31:13 +01:00
rtc-test.c
rtc: test: enable wakeup flags
2019-05-23 17:44:52 +02:00
rtc-tps6586x.c
rtc: tps6586x: Use IRQ_NOAUTOEN flag
2020-01-25 21:50:18 +01:00
rtc-tps65910.c
rtc: tps65910: allow using RTC without alarm interrupt
2019-11-17 22:24:33 +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: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-v3020.c
rtc: v3020: remove set but unused variable
2019-11-27 09:31:13 +01:00
rtc-vr41xx.c
compat_ioctl: move rtc handling into drivers/rtc/dev.c
2019-10-23 17:23:43 +02:00
rtc-vt8500.c
rtc: vt8500: let the core handle rtc range
2019-10-19 22:33:15 +02:00
rtc-wilco-ec.c
rtc: wilco-ec: Handle reading invalid times
2019-10-14 17:49:17 +02:00
rtc-wm831x.c
rtc: wm831x: Add IRQF_ONESHOT flag
2019-07-13 21:39:51 +02:00
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: xgene: Remove unused struct device in struct xgene_rtc_dev
2019-11-27 09:31:14 +01:00
rtc-zynqmp.c
rtc: zynqmp: Clear alarm interrupt status before interrupt enable
2020-02-12 12:21:42 +01:00
sysfs.c
rtc: sysfs: use kobj_to_dev
2020-03-16 11:12:08 +01:00
systohc.c
rtc: drop set_mms and set_mmss64
2019-05-08 22:14:36 +02:00