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media: cetrus: return an error if alloc fails

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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.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2018-12-07 06:13:48 -05:00
parent e82a34fa89
commit 9ed5d5fb8b
1 changed files with 2 additions and 1 deletions
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3
drivers/staging/media/sunxi/cedrus/cedrus.c
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@ -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 = { 0 };