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| author | Ingo Molnar <mingo@elte.hu> | 2010-10-07 09:43:11 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-07 09:43:11 +0200 |
| commit | d4f8f217b8a5d5bd02af979650418dca4caec472 (patch) | |
| tree | af047bfa9729c975e24cb7624107574e884d3a57 /drivers/rtc/rtc-bfin.c | |
| parent | 2dfbf4dfbe47a484bae20456c12b40763b9b6af7 (diff) | |
| parent | 773e3f93577ffb493fb7c39b1a6ecf39b5748e87 (diff) | |
| download | kernel_samsung_smdk4412-d4f8f217b8a5d5bd02af979650418dca4caec472.zip kernel_samsung_smdk4412-d4f8f217b8a5d5bd02af979650418dca4caec472.tar.gz kernel_samsung_smdk4412-d4f8f217b8a5d5bd02af979650418dca4caec472.tar.bz2 | |
Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu
Diffstat (limited to 'drivers/rtc/rtc-bfin.c')
| -rw-r--r-- | drivers/rtc/rtc-bfin.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c index 72b2bcc..d4fb82d 100644 --- a/drivers/rtc/rtc-bfin.c +++ b/drivers/rtc/rtc-bfin.c @@ -426,7 +426,7 @@ static int bfin_rtc_suspend(struct platform_device *pdev, pm_message_t state) enable_irq_wake(IRQ_RTC); bfin_rtc_sync_pending(&pdev->dev); } else - bfin_rtc_int_clear(-1); + bfin_rtc_int_clear(0); return 0; } @@ -435,8 +435,17 @@ static int bfin_rtc_resume(struct platform_device *pdev) { if (device_may_wakeup(&pdev->dev)) disable_irq_wake(IRQ_RTC); - else - bfin_write_RTC_ISTAT(-1); + + /* + * Since only some of the RTC bits are maintained externally in the + * Vbat domain, we need to wait for the RTC MMRs to be synced into + * the core after waking up. This happens every RTC 1HZ. Once that + * has happened, we can go ahead and re-enable the important write + * complete interrupt event. + */ + while (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_SEC)) + continue; + bfin_rtc_int_set(RTC_ISTAT_WRITE_COMPLETE); return 0; } |