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Diffstat (limited to 'arch/i386/kernel/apm.c')
| -rw-r--r-- | arch/i386/kernel/apm.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c index b75cff25de4b..199016927541 100644 --- a/arch/i386/kernel/apm.c +++ b/arch/i386/kernel/apm.c @@ -785,7 +785,11 @@ static int apm_do_idle(void) polling = !!(current_thread_info()->status & TS_POLLING); if (polling) { current_thread_info()->status &= ~TS_POLLING; - smp_mb__after_clear_bit(); + /* + * TS_POLLING-cleared state must be visible before we + * test NEED_RESCHED: + */ + smp_mb(); } if (!need_resched()) { idled = 1; |