diff options
| author | Shaohua Li <shaohua.li@intel.com> | 2006-05-01 12:16:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-01 18:17:47 -0700 |
| commit | 6ba815ded3fef03e888a9fc8eae3113938ff5349 (patch) | |
| tree | e05297499d19a85e374a5efd1df5f3826dce31f7 /arch | |
| parent | 160bd18e5e545cbb4e5c26f54414485f8ac291ec (diff) | |
| download | linux-6ba815ded3fef03e888a9fc8eae3113938ff5349.tar.bz2 | |
[PATCH] timer TSC check suspend notifier change
At suspend time, the TSC CPUFREQ_SUSPENDCHANGE notifier change might
wrongly enable interrupt. cpufreq driver suspend/resume is in interrupt
disabled environment.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/timers/timer_tsc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/i386/kernel/timers/timer_tsc.c b/arch/i386/kernel/timers/timer_tsc.c index 5e41ee29c8cf..f1187ddb0d0f 100644 --- a/arch/i386/kernel/timers/timer_tsc.c +++ b/arch/i386/kernel/timers/timer_tsc.c @@ -279,7 +279,7 @@ time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, { struct cpufreq_freqs *freq = data; - if (val != CPUFREQ_RESUMECHANGE) + if (val != CPUFREQ_RESUMECHANGE && val != CPUFREQ_SUSPENDCHANGE) write_seqlock_irq(&xtime_lock); if (!ref_freq) { if (!freq->old){ @@ -312,7 +312,7 @@ time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, } end: - if (val != CPUFREQ_RESUMECHANGE) + if (val != CPUFREQ_RESUMECHANGE && val != CPUFREQ_SUSPENDCHANGE) write_sequnlock_irq(&xtime_lock); return 0; |