media: mc-entity.c: use & to check pad flags, not ==

commit 044041cd5227ec9ccf969f4bf1cc08bffe13b9d3 upstream.

These are bits so to test if a pad is a sink you use & but not ==.

It looks like the only reason this hasn't caused problems before is that
media_get_pad_index() is currently only used with pads that do not set the
MEDIA_PAD_FL_MUST_CONNECT flag. So a pad really had only the SINK or SOURCE
flag set and nothing else.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: <stable@vger.kernel.org>      # for v5.3 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c
index 7c429ce98bae66424c7e70a36e3c29166fa17fba..668770e9f609000ffb15c834a059a14ea1750d51 100644 (file)
--- a/drivers/media/mc/mc-entity.c
+++ b/drivers/media/mc/mc-entity.c
@@ -639,9 +639,9 @@ int media_get_pad_index(struct media_entity *entity, bool is_sink,
                return -EINVAL;
 
        for (i = 0; i < entity->num_pads; i++) {
-               if (entity->pads[i].flags == MEDIA_PAD_FL_SINK)
+               if (entity->pads[i].flags & MEDIA_PAD_FL_SINK)
                        pad_is_sink = true;
-               else if (entity->pads[i].flags == MEDIA_PAD_FL_SOURCE)
+               else if (entity->pads[i].flags & MEDIA_PAD_FL_SOURCE)
                        pad_is_sink = false;
                else
                        continue;       /* This is an error! */