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authorXunlei Pang <pang.xunlei@linaro.org>2015-04-01 20:34:38 -0700
committerIngo Molnar <mingo@kernel.org>2015-04-03 08:18:34 +0200
commit0fa88cb4b82b5cf7429bc1cef9db006ca035754e (patch)
treeb3800f619ee137e6914e56bf803968642bd389af /drivers/rtc
parent264bb3f79f2a465477cdcd2f0554e21aedc443a3 (diff)
downloadlinux-0fa88cb4b82b5cf7429bc1cef9db006ca035754e.tar.bz2
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')
-rw-r--r--drivers/rtc/class.c4
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;