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    Subject[PATCH 4.14 088/109] media: davinci: vpif_capture: add NULL check on devm_kzalloc return value
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>


    [ Upstream commit 5a18c2434f8bfc8bc2fb0f8af3e44f7408d63e4f ]

    Check return value from call to devm_kzalloc() in order to prevent
    a NULL pointer dereference.

    This issue was detected with the help of Coccinelle.

    Fixes: 4a5f8ae50b66 ("[media] davinci: vpif_capture: get subdevs from DT when available")

    Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
    Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/media/platform/davinci/vpif_capture.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/drivers/media/platform/davinci/vpif_capture.c
    +++ b/drivers/media/platform/davinci/vpif_capture.c
    @@ -1545,6 +1545,8 @@ vpif_capture_get_pdata(struct platform_d
    sizeof(*chan->inputs) *
    VPIF_CAPTURE_NUM_CHANNELS,
    GFP_KERNEL);
    + if (!chan->inputs)
    + return NULL;

    chan->input_count++;
    chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;

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