Commits
Thadeu Lima de Souza Cascardo committed 3784576fc63
alarmtimer: Use EOPNOTSUPP instead of ENOTSUPP commit f18ddc13af981ce3c7b7f26925f099e7c6929aba upstream. ENOTSUPP is not supposed to be returned to userspace. This was found on an OpenPower machine, where the RTC does not support set_alarm. On that system, a clock_nanosleep(CLOCK_REALTIME_ALARM, ...) results in "524 Unknown error 524" Replace it with EOPNOTSUPP which results in the expected "95 Operation not supported" error. Fixes: 1c6b39ad3f01 (alarmtimers: Return -ENOTSUPP if no RTC device is present) Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190903171802.28314-1-cascardo@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>