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[next] drm/amd/display: fix incorrect null check on pointer

Message ID 20190426214811.12310-1-colin.king@canonical.com (mailing list archive)
State New, archived
Headers show
Series [next] drm/amd/display: fix incorrect null check on pointer | expand

Commit Message

Colin King April 26, 2019, 9:48 p.m. UTC
From: Colin Ian King <colin.king@canonical.com>

Currently an allocation is being made but the allocation failure
check is being performed on another pointer. Fix this by checking
the correct pointer. Also use the normal kernel idiom for null
pointer checks.

Addresses-Coverity: ("Resource leak")
Fixes: 43e3ac8389ef ("drm/amd/display: Add function to copy DC streams")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Alex Deucher April 29, 2019, 7:29 p.m. UTC | #1
On Fri, Apr 26, 2019 at 5:48 PM Colin King <colin.king@canonical.com> wrote:
>
> From: Colin Ian King <colin.king@canonical.com>
>
> Currently an allocation is being made but the allocation failure
> check is being performed on another pointer. Fix this by checking
> the correct pointer. Also use the normal kernel idiom for null
> pointer checks.
>
> Addresses-Coverity: ("Resource leak")
> Fixes: 43e3ac8389ef ("drm/amd/display: Add function to copy DC streams")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Applied.  Thanks!

Alex

> ---
>  drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
> index 6200df3edcd0..96e97d25d639 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
> @@ -168,7 +168,7 @@ struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream)
>         struct dc_stream_state *new_stream;
>
>         new_stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL);
> -       if (stream == NULL)
> +       if (!new_stream)
>                 return NULL;
>
>         memcpy(new_stream, stream, sizeof(struct dc_stream_state));
> --
> 2.20.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
diff mbox series

Patch

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 6200df3edcd0..96e97d25d639 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -168,7 +168,7 @@  struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream)
 	struct dc_stream_state *new_stream;
 
 	new_stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL);
-	if (stream == NULL)
+	if (!new_stream)
 		return NULL;
 
 	memcpy(new_stream, stream, sizeof(struct dc_stream_state));