linux-kernel - [PATCH] char: pcmcia: remove set but not used variable 'uc'

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Message-ID: <20210514062131.3533460-1-yukuai3@huawei.com>
Date:   Fri, 14 May 2021 14:21:31 +0800
From:   Yu Kuai <yukuai3@...wei.com>
To:     <laforge@...monks.org>, <arnd@...db.de>,
        <gregkh@...uxfoundation.org>, <akpm@...l.org>
CC:     <linux-kernel@...r.kernel.org>, <yukuai3@...wei.com>,
        <yi.zhang@...wei.com>
Subject: [PATCH] char: pcmcia: remove set but not used variable 'uc'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/char/pcmcia/cm4040_cs.c:224:16: warning: variable ‘uc’
set but not used [-Wunused-but-set-variable]

It is never used and so can be removed.

Fixes: 77c44ab1d8e9 ("[PATCH] New Omnikey Cardman 4040 driver")
Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/char/pcmcia/cm4040_cs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index d5e43606339c..827711911da4 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -221,7 +221,6 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
 	unsigned long i;
 	size_t min_bytes_to_read;
 	int rc;
-	unsigned char uc;
 
 	DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
 
@@ -308,7 +307,7 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
 			return -EIO;
 	}
 
-	uc = xinb(iobase + REG_OFFSET_BULK_IN);
+	xinb(iobase + REG_OFFSET_BULK_IN);
 
 	DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
 	return min_bytes_to_read;
-- 
2.25.4