linux-kernel - [PATCH] media: zr364xx: remove redundant assigmnent to idx, clean up code

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Message-Id: <20191025134612.30703-1-colin.king@canonical.com>
Date:   Fri, 25 Oct 2019 14:46:12 +0100
From:   Colin King <colin.king@...onical.com>
To:     Antoine Jacquet <royale@...ezo.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-usb@...r.kernel.org, linux-media@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] media: zr364xx: remove redundant assigmnent to idx, clean up code

From: Colin Ian King <colin.king@...onical.com>

The variable cable_type is being initialized with a value that
is never read and is being re-assigned a little later on. Replace
the redundant initializtion with the assignment that occurs a little
later. Also initialize frm too rather than have a later assignment.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/media/usb/zr364xx/zr364xx.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/media/usb/zr364xx/zr364xx.c b/drivers/media/usb/zr364xx/zr364xx.c
index aff78d63b869..57dbcc8083bf 100644
--- a/drivers/media/usb/zr364xx/zr364xx.c
+++ b/drivers/media/usb/zr364xx/zr364xx.c
@@ -555,14 +555,12 @@ static int zr364xx_read_video_callback(struct zr364xx_camera *cam,
 {
 	unsigned char *pdest;
 	unsigned char *psrc;
-	s32 idx = -1;
-	struct zr364xx_framei *frm;
+	s32 idx = cam->cur_frame;
+	struct zr364xx_framei *frm = &cam->buffer.frame[idx];
 	int i = 0;
 	unsigned char *ptr = NULL;
 
 	_DBG("buffer to user\n");
-	idx = cam->cur_frame;
-	frm = &cam->buffer.frame[idx];
 
 	/* swap bytes if camera needs it */
 	if (cam->method == METHOD0) {
-- 
2.20.1