shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

alarmtimer: Use EOPNOTSUPP instead of ENOTSUPP

Browse Source 
commit f18ddc13af 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: 1c6b39ad3f (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>
This commit is contained in:
Thadeu Lima de Souza Cascardo
2019-09-03 14:18:02 -03:00
committed by Greg Kroah-Hartman
parent 1347c743ff
commit 65b7a5a36a
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/time/alarmtimer.c
View File

@@ -544,7 +544,7 @@ static int alarm_timer_create(struct k_itimer *new_timer)
enum alarmtimer_type type;
if (!alarmtimer_get_rtcdev())
return -ENOTSUPP;
return -EOPNOTSUPP;
if (!capable(CAP_WAKE_ALARM))
return -EPERM;
@@ -772,7 +772,7 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
struct restart_block *restart;
if (!alarmtimer_get_rtcdev())
return -ENOTSUPP;
return -EOPNOTSUPP;
if (flags & ~TIMER_ABSTIME)
return -EINVAL;