From: Shawn Lin Date: Mon, 22 Aug 2016 08:52:25 +0000 (+0800) Subject: MMC: meson: don't use priv host structure before we verify it X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=41750067918b6bd4e0fe1025ef08f7fab2d1cf41;p=deliverable%2Flinux.git MMC: meson: don't use priv host structure before we verify it The code of meson_mmc_irq is going to use mmeson_host before the santity check of WARN_ON. I believe this's not the code's intention, fix it. Signed-off-by: Shawn Lin Signed-off-by: Kevin Hilman --- diff --git a/drivers/mmc/host/meson-gxbb.c b/drivers/mmc/host/meson-gxbb.c index 96cd8830a124..b226d529c0cb 100644 --- a/drivers/mmc/host/meson-gxbb.c +++ b/drivers/mmc/host/meson-gxbb.c @@ -626,7 +626,7 @@ static int meson_mmc_read_resp(struct mmc_host *mmc, struct mmc_command *cmd) static irqreturn_t meson_mmc_irq(int irq, void *dev_id) { struct meson_host *host = dev_id; - struct mmc_request *mrq = host->mrq; + struct mmc_request *mrq; struct mmc_command *cmd = host->cmd; u32 irq_en, status, raw_status; irqreturn_t ret = IRQ_HANDLED; @@ -634,6 +634,8 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) if (WARN_ON(!host)) return IRQ_NONE; + mrq = host->mrq; + if (WARN_ON(!mrq)) return IRQ_NONE;