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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-23 14:45:58 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-28 09:19:23 +0200 |
| commit | 0587d409ec53312f735d2004d5f47f8effee1ea9 (patch) | |
| tree | 7ab956aaf3d7d238f8bd40a8f50d60302cb3363a /arch/s390/kernel/time.c | |
| parent | s390/kprobes: add support for compare and branch instructions (diff) | |
| download | linux-0587d409ec53312f735d2004d5f47f8effee1ea9.tar.xz linux-0587d409ec53312f735d2004d5f47f8effee1ea9.zip | |
s390/time: return with irqs disabled from psw_idle
Modify the psw_idle waiting logic in entry[64].S to return with
interrupts disabled. This avoids potential issues with udelay
and interrupt loops as interrupts are not reenabled after
clock comparator interrupts.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/time.c')
| -rw-r--r-- | arch/s390/kernel/time.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 876546b9cfa1..064c3082ab33 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -92,7 +92,6 @@ void clock_comparator_work(void) struct clock_event_device *cd; S390_lowcore.clock_comparator = -1ULL; - set_clock_comparator(S390_lowcore.clock_comparator); cd = &__get_cpu_var(comparators); cd->event_handler(cd); } |