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684ad537ab
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: Zero means that no persistent clock is available
and the absence of persistent clock should be quietly accepted.
Fixes: 3eca993740 ("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