On 20/11/2023 08:15:51-0600, Mario Limonciello wrote: > A number of users have reported their system will have a failure reading > the RTC around s2idle entry or exit. > > This failure manifests as UIP clear taking longer than 10ms. > > By a debugging patch provided by Mateusz Jończyk it is shown that this > has taken upwards of 300ms in some cases. > > This series adjusts the UIP timeout to be configurable by the caller and > changes some callers which aren't called in an interrupt context to allow > longer timeouts. > > Mario Limonciello (4): > rtc: mc146818-lib: Adjust failure return code for mc146818_get_time() > rtc: Adjust failure return code for cmos_set_alarm() > rtc: Add support for configuring the UIP timeout for RTC reads > rtc: Extend timeout for waiting for UIP to clear to 1s > > arch/alpha/kernel/rtc.c | 2 +- > arch/x86/kernel/hpet.c | 2 +- > arch/x86/kernel/rtc.c | 2 +- Please also copy the x86 maintainers so they know I'm going to carry patches that may affect them (which I doubt will cause any issues) > drivers/base/power/trace.c | 2 +- > drivers/rtc/rtc-cmos.c | 10 ++++----- > drivers/rtc/rtc-mc146818-lib.c | 37 +++++++++++++++++++++++++--------- > include/linux/mc146818rtc.h | 3 ++- > 7 files changed, 39 insertions(+), 19 deletions(-) > > > base-commit: 98b1cc82c4affc16f5598d4fa14b1858671b2263 > -- > 2.34.1 > -- Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
