Hi,
On Fri, 2018-12-07 at 06:13 -0500, Mauro Carvalho Chehab wrote:
> As warned by smatch:
>
> drivers/staging/media/sunxi/cedrus/cedrus.c:
> drivers/staging/media/sunxi/cedrus/cedrus.c:93 cedrus_init_ctrls() error:
> potential null dereference 'ctx->ctrls'. (kzalloc returns null)
>
> While here, remove the memset(), as kzalloc() already zeroes the
> struct.
Good catch, thanks for the patch!
> Signed-off-by: Mauro Carvalho Chehab
Acked-by: Paul Kocialkowski
> ---
> drivers/staging/media/sunxi/cedrus/cedrus.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c
> b/drivers/staging/media/sunxi/cedrus/cedrus.c
> index 44c45c687503..24b89cd2b692 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
> @@ -72,7 +72,8 @@ static int cedrus_init_ctrls(struct cedrus_dev *dev, struct
> cedrus_ctx *ctx)
> ctrl_size = sizeof(ctrl) * CEDRUS_CONTROLS_COUNT + 1;
>
> ctx->ctrls = kzalloc(ctrl_size, GFP_KERNEL);
> - memset(ctx->ctrls, 0, ctrl_size);
> + if (!ctx->ctrls)
> + return -ENOMEM;
>
> for (i = 0; i < CEDRUS_CONTROLS_COUNT; i++) {
> struct v4l2_ctrl_config cfg = { NULL };
--
Paul Kocialkowski, Bootlin (formerly Free Electrons)
Embedded Linux and kernel engineering
https://bootlin.com
