linux-kernel - [PATCH] media: test_drivers: remove redundant assignment to variable checksum

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Date:   Wed, 19 Oct 2022 22:52:12 +0100
From:   Colin Ian King <colin.i.king@...il.com>
To:     Hans Verkuil <hverkuil@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] media: test_drivers: remove redundant assignment to variable checksum

Variable checksum is assigned a value that is never read, it is assigned
a new value in a following for-loop. The assignment is redundant and can
be removed.

Cleans up clang scan build warning:
drivers/media/test-drivers/vivid/vivid-vbi-gen.c:197:2: warning: Value
stored to 'checksum' is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/media/test-drivers/vivid/vivid-vbi-gen.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-gen.c b/drivers/media/test-drivers/vivid/vivid-vbi-gen.c
index a141369a7a63..70a4024d461e 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-gen.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-gen.c
@@ -194,7 +194,6 @@ static void vivid_vbi_gen_set_time_of_day(u8 *packet)
 	for (checksum = i = 0; i <= 8; i++)
 		checksum += packet[i] & 0x7f;
 	packet[9] = calc_parity(0x100 - checksum);
-	checksum = 0;
 	packet[10] = calc_parity(0x07);
 	packet[11] = calc_parity(0x04);
 	if (sys_tz.tz_minuteswest >= 0)
-- 
2.37.3