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| author |   Xunlei Pang <pang.xunlei@linaro.org> | 2015-04-01 20:34:38 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-04-03 08:18:34 +0200 |
| commit | 0fa88cb4b82b5cf7429bc1cef9db006ca035754e (patch) | |
| tree | b3800f619ee137e6914e56bf803968642bd389af /drivers/rtc/class.c | |
| parent | time: Fix a bug in timekeeping_suspend() with no persistent clock (diff) | |
| download | wireguard-linux-0fa88cb4b82b5cf7429bc1cef9db006ca035754e.tar.xz wireguard-linux-0fa88cb4b82b5cf7429bc1cef9db006ca035754e.zip | |
time, drivers/rtc: Don't bother with rtc_resume() for the nonstop clocksource
If a system does not provide a persistent_clock(), the time
will be updated on resume by rtc_resume(). With the addition
of the non-stop clocksources for suspend timing, those systems
set the time on resume in timekeeping_resume(), but may not
provide a valid persistent_clock().
This results in the rtc_resume() logic thinking no one has set
the time and it then will over-write the suspend time again,
which is not necessary and only increases clock error.
So, fix this for rtc_resume().
This patch also improves the name of persistent_clock_exist to
make it more grammatical.
Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1427945681-29972-19-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/rtc/class.c')
| -rw-r--r-- | drivers/rtc/class.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index d40760aa4553..c29ba7e14304 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -55,7 +55,7 @@ static int rtc_suspend(struct device *dev) struct timespec64 delta, delta_delta; int err; - if (has_persistent_clock()) + if (timekeeping_rtc_skipsuspend()) return 0; if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0) @@ -102,7 +102,7 @@ static int rtc_resume(struct device *dev) struct timespec64 sleep_time; int err; - if (has_persistent_clock()) + if (timekeeping_rtc_skipresume()) return 0; rtc_hctosys_ret = -ENODEV; |