From e82374fd1a804e197fc2a54c3930e70c5d300abc Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Mon, 11 Aug 2008 22:22:27 +0200 Subject: pda_power: Check and handle return value of set_irq_wake The recent change in commit 2db873211ba47ef704c301f9ecf4a33413a0b649 forces the calls enable_irq_wake() and disable_irq_wake() to be balanced. But if in pda_power_suspend() the call to enable_irq_wake() fails (because attached gpio cannot wake up the CPU), the corresponding disable_irq_wake will WARN(). Fix it by storing success/failure of enable_irq_wake(). Signed-off-by: Robert Jarzmik Signed-off-by: Anton Vorontsov --- drivers/power/pda_power.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c index 0471ec743ab..d30bb766fce 100644 --- a/drivers/power/pda_power.c +++ b/drivers/power/pda_power.c @@ -334,13 +334,16 @@ static int pda_power_remove(struct platform_device *pdev) } #ifdef CONFIG_PM +static int ac_wakeup_enabled; +static int usb_wakeup_enabled; + static int pda_power_suspend(struct platform_device *pdev, pm_message_t state) { if (device_may_wakeup(&pdev->dev)) { if (ac_irq) - enable_irq_wake(ac_irq->start); + ac_wakeup_enabled = !enable_irq_wake(ac_irq->start); if (usb_irq) - enable_irq_wake(usb_irq->start); + usb_wakeup_enabled = !enable_irq_wake(usb_irq->start); } return 0; @@ -349,9 +352,9 @@ static int pda_power_suspend(struct platform_device *pdev, pm_message_t state) static int pda_power_resume(struct platform_device *pdev) { if (device_may_wakeup(&pdev->dev)) { - if (usb_irq) + if (usb_irq && usb_wakeup_enabled) disable_irq_wake(usb_irq->start); - if (ac_irq) + if (ac_irq && ac_wakeup_enabled) disable_irq_wake(ac_irq->start); } -- cgit v1.2.3-18-g5258