[PATCH 5/9] MCI: imx-esdhc: Fix possible null pointer dereference

[Alexander Shiyan]

Signed-off-by: Alexander Shiyan <shc_work at mail.ru>
---
 drivers/mci/imx-esdhc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mci/imx-esdhc.c b/drivers/mci/imx-esdhc.c
index 8c2695c..8194b4d 100644
--- a/drivers/mci/imx-esdhc.c
+++ b/drivers/mci/imx-esdhc.c
@@ -450,10 +450,15 @@ static int esdhc_card_present(struct mci_host *mci)
 static int esdhc_init(struct mci_host *mci, struct device_d *dev)
 {
 	struct fsl_esdhc_host *host = to_fsl_esdhc(mci);
-	struct fsl_esdhc __iomem *regs = host->regs;
+	struct fsl_esdhc __iomem *regs;
 	int timeout = 1000;
 	int ret = 0;
 
+	if (!host)
+		return -EIO;
+
+	regs = host->regs;
+
 	/* Enable cache snooping */
 	if (host && !host->no_snoop)
 		esdhc_write32(&regs->scr, 0x00000040);
-- 
1.8.1.5