[PATCH] Mmc: host - Fix possible NULL derefrence.

[Shailendra Verma]

of_match_device could return NULL, and so can cause a NULL
pointer dereference later.

Signed-off-by: Shailendra Verma <shailendra.v@xxxxxxxxxxx>
---
 drivers/mmc/host/mxs-mmc.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 44ecebd..d12a5b7 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -581,6 +581,11 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 	struct regulator *reg_vmmc;
 	struct mxs_ssp *ssp;
 
+	if (!of_id) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
+
 	irq_err = platform_get_irq(pdev, 0);
 	if (irq_err < 0)
 		return irq_err;
-- 
1.7.9.5