Revert "media: rcar_drif: fix a memory disclosure"

commit 3e465fc3846734e9489273d889f19cc17b4cf4bd upstream.

This reverts commit d39083234c60519724c6ed59509a2129fd2aed41.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, it was determined that this commit is not needed at all as
the media core already prevents memory disclosure on this codepath, so
just drop the extra memset happening here.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Fixes: d39083234c60 ("media: rcar_drif: fix a memory disclosure")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/platform/rcar_drif.c b/drivers/media/platform/rcar_drif.c
index b677d014e7bab68905096b893f5a7166da6cb44b..81413ab52475d4132ef6c0c08f6c034f82395b25 100644 (file)
--- a/drivers/media/platform/rcar_drif.c
+++ b/drivers/media/platform/rcar_drif.c
@@ -912,7 +912,6 @@ static int rcar_drif_g_fmt_sdr_cap(struct file *file, void *priv,
 {
        struct rcar_drif_sdr *sdr = video_drvdata(file);
 
-       memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
        f->fmt.sdr.pixelformat = sdr->fmt->pixelformat;
        f->fmt.sdr.buffersize = sdr->fmt->buffersize;