[PATCH 4.9 03/32] media: vivid: check if the cec_adapter is valid

[Greg Kroah-Hartman]

From: Hans Verkuil <hverkuil@xxxxxxxxx>

commit ed356f110403f6acc64dcbbbfdc38662ab9b06c2 upstream.

If CEC is not enabled for the vivid driver, then the adap pointer is NULL
and 'adap->phys_addr' will fail.

Cc: <stable@xxxxxxxxxxxxxxx>      # for v4.12 and up
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
[ Naresh: Fixed rebase conflict ]
Signed-off-by: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/media/platform/vivid/vivid-vid-common.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/media/platform/vivid/vivid-vid-common.c
+++ b/drivers/media/platform/vivid/vivid-vid-common.c
@@ -841,6 +841,7 @@ int vidioc_g_edid(struct file *file, voi
 	if (edid->start_block + edid->blocks > dev->edid_blocks)
 		edid->blocks = dev->edid_blocks - edid->start_block;
 	memcpy(edid->edid, dev->edid, edid->blocks * 128);
-	cec_set_edid_phys_addr(edid->edid, edid->blocks * 128, adap->phys_addr);
+	if (adap)
+		cec_set_edid_phys_addr(edid->edid, edid->blocks * 128, adap->phys_addr);
 	return 0;
 }