>From b7be39e0bbac3950057078ac66900ebc0871f77e Mon Sep 17 00:00:00 2001 From: Zhangfei Gao <zhangfei.gao@xxxxxxxxxxx> Date: Fri, 21 Jan 2011 18:02:47 -0500 Subject: [PATCH] mmc: clear all interrupt in suspend before free_irq When debugging wifi host sleep, race condition about SDHCI_INT_CARD_INT happens. Host free_irq in suspend and request_irq when resume back. However SDHCI_INT_CARD_INT is not cleared, so interrupt will immediately happen after request_irq. mmc_signal_sdio_irq will be called and wakeup sdio_irq_thread. As a result irq_handler in sdio driver is called even before host resume back. The correct case is mmc_sdio_resume calls mmc_signal_sdio_irq to wakeup sdio_irq_thread Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxxx> --- drivers/mmc/host/sdhci.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index aacd78c..97074ae 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1707,6 +1707,7 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state) ret = mmc_suspend_host(host->mmc); if (ret) return ret; + sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, 0); free_irq(host->irq, host); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
