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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        =?UTF-8?q?Andr=C3=A9=20Almeida?= <andrealmeid@collabora.com>,
        Helen Koike <helen.koike@collabora.com>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 070/293] media: vimc: cap: check v4l2_fill_pixfmt return value
Date:   Mon, 29 Jul 2019 21:19:21 +0200
Message-Id: <20190729190830.038735151@linuxfoundation.org>
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[ Upstream commit 77ae46e11df5c96bb4582633851f838f5d954df4 ]

v4l2_fill_pixfmt() returns -EINVAL if the pixelformat used as parameter is
invalid or if the user is trying to use a multiplanar format with the
singleplanar API. Currently, the vimc_cap_try_fmt_vid_cap() returns such
value, but vimc_cap_s_fmt_vid_cap() is ignoring it. Fix that and returns
an error value if vimc_cap_try_fmt_vid_cap() has failed.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Suggested-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/vimc/vimc-capture.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
index a078ad18909a..091921ed09dd 100644
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ b/drivers/media/platform/vimc/vimc-capture.c
@@ -131,12 +131,15 @@ static int vimc_cap_s_fmt_vid_cap(struct file *file, void *priv,
 				  struct v4l2_format *f)
 {
 	struct vimc_cap_device *vcap = video_drvdata(file);
+	int ret;
 
 	/* Do not change the format while stream is on */
 	if (vb2_is_busy(&vcap->queue))
 		return -EBUSY;
 
-	vimc_cap_try_fmt_vid_cap(file, priv, f);
+	ret = vimc_cap_try_fmt_vid_cap(file, priv, f);
+	if (ret)
+		return ret;
 
 	dev_dbg(vcap->dev, "%s: format update: "
 		"old:%dx%d (0x%x, %d, %d, %d, %d) "
-- 
2.20.1