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Subject[PATCH] drivers: media: platform: vivid: Fix possible null derefrence
Check for dev_fmt being null before derefrencing it, to assign it
to planes.

Found using Coccinelle.

Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
---
drivers/media/platform/vivid/vivid-vid-out.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/vivid/vivid-vid-out.c b/drivers/media/platform/vivid/vivid-vid-out.c
index 39ff79f..8f081bb 100644
--- a/drivers/media/platform/vivid/vivid-vid-out.c
+++ b/drivers/media/platform/vivid/vivid-vid-out.c
@@ -114,7 +114,7 @@ static int vid_out_buf_prepare(struct vb2_buffer *vb)
{
struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
unsigned long size;
- unsigned planes = dev->fmt_out->planes;
+ unsigned planes;
unsigned p;

dprintk(dev, 1, "%s\n", __func__);
@@ -122,6 +122,8 @@ static int vid_out_buf_prepare(struct vb2_buffer *vb)
if (WARN_ON(NULL == dev->fmt_out))
return -EINVAL;

+ planes = dev->fmt_out->planes;
+
if (dev->buf_prepare_error) {
/*
* Error injection: test what happens if buf_prepare() returns
--
1.7.9.5


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