linux-kernel - [PATCH] input: cyapa: remove redundant assignment to 'pwr

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 17 Jan 2018 10:45:19 +0000
From:   Colin King <colin.king@...onical.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Guenter Roeck <linux@...ck-us.net>, linux-input@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] input: cyapa: remove redundant assignment to 'pwr_cmd'

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

The variable pwr_cmd is being assigned to cyapa->suspend_power_mode
twice, once during the declaration and once after taking an
interruptible mutex lock.  Remove the redundant first assignment
since the value is never read and it is outside the mutex lock.

Cleans up clang warning:
drivers/input/mouse/cyapa.c:743:5: warning: Value stored to 'pwr_cmd'
during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/input/mouse/cyapa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c
index fd8865c65caf..dfd3873513e4 100644
--- a/drivers/input/mouse/cyapa.c
+++ b/drivers/input/mouse/cyapa.c
@@ -740,7 +740,7 @@ static ssize_t cyapa_show_suspend_scanrate(struct device *dev,
 					   char *buf)
 {
 	struct cyapa *cyapa = dev_get_drvdata(dev);
-	u8 pwr_cmd = cyapa->suspend_power_mode;
+	u8 pwr_cmd;
 	u16 sleep_time;
 	int len;
 	int error;
-- 
2.15.1