linux-kernel - [PATCH v3 10/12] media: sun6i-isp: capture: Fix uninitialized variable use

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Date:   Thu,  8 Dec 2022 15:20:04 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev
Cc:     Yong Deng <yong.deng@...ewell.com>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Sakari Ailus <sakari.ailus@....fi>,
        Conor Dooley <conor@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH v3 10/12] media: sun6i-isp: capture: Fix uninitialized variable use

While the stride_chroma variable was previously initialized to zero,
it's actually stride_chroma_div4 that is set to hardware registers.

Initialize it to zero instead to avoid an uninitialized variable use
and get rid of the associated smatch warning.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Fixes: e3185e1d7c14 ("media: staging: media: Add support for the Allwinner A31 ISP")
---
 drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
index 4b592820845a..1595a9607775 100644
--- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
@@ -108,8 +108,8 @@ sun6i_isp_capture_buffer_configure(struct sun6i_isp_device *isp_dev,
 void sun6i_isp_capture_configure(struct sun6i_isp_device *isp_dev)
 {
 	unsigned int width, height;
-	unsigned int stride_luma, stride_chroma = 0;
-	unsigned int stride_luma_div4, stride_chroma_div4;
+	unsigned int stride_luma, stride_chroma;
+	unsigned int stride_luma_div4, stride_chroma_div4 = 0;
 	const struct sun6i_isp_capture_format *format;
 	const struct v4l2_format_info *info;
 	u32 pixelformat;
-- 
2.38.1