Messages in this thread Patch in this message | | | Date | Mon, 30 Jul 2018 04:48:52 -0700 | From | tip-bot for Pavel Tatashin <> | Subject | [tip:x86/timers] timekeeping: Warning when persistent clock is not available |
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Commit-ID: b8becb6ca494ddb84f5752ecdb6d56ae49d9ab8a Gitweb: https://git.kernel.org/tip/b8becb6ca494ddb84f5752ecdb6d56ae49d9ab8a Author: Pavel Tatashin <pasha.tatashin@oracle.com> AuthorDate: Wed, 25 Jul 2018 16:00:18 -0400 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Mon, 30 Jul 2018 13:45:20 +0200
timekeeping: Warning when persistent clock is not available
On arches with no persistent clock a message like this is printed during boot:
[ 0.000000] Persistent clock returned invalid value
The value is not invalid: it simply zero meaning no persistent clock and the absence of persistent clock should be quietly accepted.
Fixes: 3eca993740b8 ("timekeeping: Replace read_boot_clock64() with read_persistent_wall_and_boot_offset()") Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: steven.sistare@oracle.com Cc: daniel.m.jordan@oracle.com Cc: sboyd@kernel.org Cc: john.stultz@linaro.org Link: https://lkml.kernel.org/r/20180725200018.23722-1-pasha.tatashin@oracle.com
--- kernel/time/timekeeping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 30d7f64ffc87..6183e7460138 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1536,7 +1536,7 @@ void __init timekeeping_init(void) if (timespec64_valid_strict(&wall_time) && timespec64_to_ns(&wall_time) > 0) { persistent_clock_exists = true; - } else { + } else if (timespec64_to_ns(&wall_time) != 0) { pr_warn("Persistent clock returned invalid value"); wall_time = (struct timespec64){0}; }
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