[PATCH 5/5] video: imx-ipu-v3: fix possible NULL ptr dereference

[Lucas Stach]

Signed-off-by: Lucas Stach <dev at lynxeye.de>
---
 drivers/video/imx-ipu-v3/ipu-dmfc.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/video/imx-ipu-v3/ipu-dmfc.c b/drivers/video/imx-ipu-v3/ipu-dmfc.c
index 7b54e25001c6..61704f4a9c06 100644
--- a/drivers/video/imx-ipu-v3/ipu-dmfc.c
+++ b/drivers/video/imx-ipu-v3/ipu-dmfc.c
@@ -146,16 +146,18 @@ EXPORT_SYMBOL_GPL(ipu_dmfc_disable_channel);
 static int ipu_dmfc_setup_channel(struct dmfc_channel *dmfc, int slots,
 		int segment, int burstsize)
 {
-	struct ipu_dmfc_priv *priv = dmfc->priv;
+	struct ipu_dmfc_priv *priv;
 	u32 val, field;
 
+	if (!dmfc)
+		return -EINVAL;
+
+	priv = dmfc->priv;
+
 	dev_dbg(priv->dev,
 			"dmfc: using %d slots starting from segment %d for IPU channel %d\n",
 			slots, segment, dmfc->data->ipu_channel);
 
-	if (!dmfc)
-		return -EINVAL;
-
 	switch (slots) {
 	case 1:
 		field = DMFC_FIFO_SIZE_64;
-- 
1.9.0