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[10/10] mmc: dw_mmc: Fix NULL pointer dereference

Message ID 1393321708-9719-10-git-send-email-sachin.kamat@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Sachin Kamat Feb. 25, 2014, 9:48 a.m. UTC 
If mrq->sbc is not NULL but data->stop happens to be NULL,
it will lead to NULL pointer dereferencing. Avoid this by
having a NULL check for data->stop.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
---
 drivers/mmc/host/dw_mmc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 55cd110a49c4..0c56faa6730e 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1345,7 +1345,7 @@  static void dw_mci_tasklet_func(unsigned long priv)
 
 			if (!err) {
 				if (!data->stop || mrq->sbc) {
-					if (mrq->sbc)
+					if (mrq->sbc && data->stop)
 						data->stop->error = 0;
 					dw_mci_request_end(host, mrq);
 					goto unlock;