luck/tmp_suning_uos_patched
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bug in AT91 MCI suspend routines

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This patch fixes a bug in AT91 mmc host driver, that enables the wakeup
from suspend on card detection pin even if the card detect pin is not
available (==0). If not card detection pin is defined, IRQ0 == FIQ gets
enabled and if some activity is present on that pin, the system gets a
FIQ request, that causes a crash.

Signed-off-by: Anti Sullin <anti.sullin@artecdesign.ee>
Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Anti Sullin 2007-08-30 16:15:16 +02:00 committed by Pierre Ossman
parent b67ac3f339
commit e0cda54e44
1 changed files with 3 additions and 3 deletions
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6
drivers/mmc/host/at91_mci.c
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@ -941,7 +941,7 @@ static int __exit at91_mci_remove(struct platform_device *pdev)
host = mmc_priv(mmc);
if (host->present != -1) {
if (host->board->det_pin) {
device_init_wakeup(&pdev->dev, 0);
free_irq(host->board->det_pin, host);
cancel_delayed_work(&host->mmc->detect);
@ -972,7 +972,7 @@ static int at91_mci_suspend(struct platform_device *pdev, pm_message_t state)
struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
if (device_may_wakeup(&pdev->dev))
if (host->board->det_pin && device_may_wakeup(&pdev->dev))
enable_irq_wake(host->board->det_pin);
if (mmc)
@ -987,7 +987,7 @@ static int at91_mci_resume(struct platform_device *pdev)
struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
if (device_may_wakeup(&pdev->dev))
if (host->board->det_pin && device_may_wakeup(&pdev->dev))
disable_irq_wake(host->board->det_pin);
if (mmc)