From: Anti Sullin Date: Thu, 30 Aug 2007 14:15:16 +0000 (+0200) Subject: bug in AT91 MCI suspend routines X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e0cda54e4414e98f0bf72116d8522f4e434f6b4b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git bug in AT91 MCI suspend routines 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 Signed-off-by: Nicolas Ferre Signed-off-by: Pierre Ossman --- diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index bfebd2fa7ada..955ea60583b5 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -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)