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| author | Ben Dooks <ben-linux@fluff.org> | 2011-05-11 15:13:28 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-21 15:13:10 -0700 |
| commit | b3ec0162bf3d8de20df658daac7abee0dcaf98d0 (patch) | |
| tree | 9ea31d2b4b2458fa53811f7c955823ce6aa801da /drivers/rtc | |
| parent | 0d88dc66b6ca8011870d03b7fb1e65500a02bc4b (diff) | |
| download | lwn-b3ec0162bf3d8de20df658daac7abee0dcaf98d0.tar.gz lwn-b3ec0162bf3d8de20df658daac7abee0dcaf98d0.zip | |
drivers/rtc/rtc-s3c.c: fixup wake support for rtc
commit 52cd4e5c620af9e21b5298bf01844b98573505a7 upstream.
The driver is not balancing set_irq and disable_irq_wake() calls, so
ensure that it keeps track of whether the wake is enabled.
The fixes the following error on S3C6410 devices:
WARNING: at kernel/irq/manage.c:382 set_irq_wake+0x84/0xec()
Unbalanced IRQ 92 wake disable
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index b80fa2882408..637b012007aa 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -46,6 +46,7 @@ static struct clk *rtc_clk; static void __iomem *s3c_rtc_base; static int s3c_rtc_alarmno = NO_IRQ; static int s3c_rtc_tickno = NO_IRQ; +static bool wake_en; static enum s3c_cpu_type s3c_rtc_cpu_type; static DEFINE_SPINLOCK(s3c_rtc_pie_lock); @@ -597,8 +598,12 @@ static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state) } s3c_rtc_enable(pdev, 0); - if (device_may_wakeup(&pdev->dev)) - enable_irq_wake(s3c_rtc_alarmno); + if (device_may_wakeup(&pdev->dev) && !wake_en) { + if (enable_irq_wake(s3c_rtc_alarmno) == 0) + wake_en = true; + else + dev_err(&pdev->dev, "enable_irq_wake failed\n"); + } return 0; } @@ -614,8 +619,10 @@ static int s3c_rtc_resume(struct platform_device *pdev) writew(tmp | ticnt_en_save, s3c_rtc_base + S3C2410_RTCCON); } - if (device_may_wakeup(&pdev->dev)) + if (device_may_wakeup(&pdev->dev) && wake_en) { disable_irq_wake(s3c_rtc_alarmno); + wake_en = false; + } return 0; } |