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authorMukesh Ojha <mojha@codeaurora.org>2018-07-17 12:01:29 +0530
committerJohn Stultz <john.stultz@linaro.org>2018-07-19 17:08:51 -0700
commitf473e5f467f6049370575390b08dc42131315d60 (patch)
tree5872330f85209273d677eb28891048f72215e350 /kernel/time/clocksource.c
parent985e695074d35768cb04d65f58bca45f7bf1a99d (diff)
time: Fix extra sleeptime injection when suspend fails
Currently, there exists a corner case assuming when there is only one clocksource e.g RTC, and system failed to go to suspend mode. While resume rtc_resume() injects the sleeptime as timekeeping_rtc_skipresume() returned 'false' (default value of sleeptime_injected) due to which we can see mismatch in timestamps. This issue can also come in a system where more than one clocksource are present and very first suspend fails. Success case: ------------ {sleeptime_injected=false} rtc_suspend() => timekeeping_suspend() => timekeeping_resume() => (sleeptime injected) rtc_resume() Failure case: ------------ {failure in sleep path} {sleeptime_injected=false} rtc_suspend() => rtc_resume() {sleeptime injected again which was not required as the suspend failed} Fix this by handling the boolean logic properly. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Miroslav Lichvar <mlichvar@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <sboyd@kernel.org> Originally-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/time/clocksource.c')
0 files changed, 0 insertions, 0 deletions