linux-kernel - [PATCH linux-next] cdrom: Remove redundant variable and its assignment.

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Date:   Wed, 20 Oct 2021 02:42:29 +0000
From:   luo penghao <cgel.zte@...il.com>
To:     Phillip Potter <phil@...lpotter.co.uk>
Cc:     linux-kernel@...r.kernel.org, luo penghao <luo.penghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] cdrom: Remove redundant variable and its assignment.

Variable is not used in functions, and its assignment is redundant too.
So it should be deleted. Also the inner-most set of parentheses is no
longer needed.

The clang_analyzer complains as follows:

drivers/cdrom/cdrom.c:877: warning:

Although the value stored to 'ret' is used in the enclosing expression,
the value is never actually read from 'ret'.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: luo penghao <luo.penghao@....com.cn>
---
 drivers/cdrom/cdrom.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index feb827e..40970b8 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -864,7 +864,7 @@ static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
 {
 	struct packet_command cgc;
 	char buffer[32];
-	int ret, mmc3_profile;
+	int mmc3_profile;
 
 	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
 
@@ -874,7 +874,7 @@ static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
 	cgc.cmd[8] = sizeof(buffer);		/* Allocation Length */
 	cgc.quiet = 1;
 
-	if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
+	if (cdi->ops->generic_packet(cdi, &cgc))
 		mmc3_profile = 0xffff;
 	else
 		mmc3_profile = (buffer[6] << 8) | buffer[7];
-- 
2.15.2