netdev - [PATCH net-next 1/2] drivers: net: davicom: Fixed unused but set variable with W=1

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Message-Id: <20201031005833.1060316-2-andrew@lunn.ch>
Date:   Sat, 31 Oct 2020 01:58:32 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next 1/2] drivers: net: davicom: Fixed unused but set variable with W=1

drivers/net/ethernet/davicom//dm9000.c: In function ‘dm9000_dumpblk_8bit’:
drivers/net/ethernet/davicom//dm9000.c:235:6: warning: variable ‘tmp’ set but not used [-Wunused-but-set-variable]

The driver needs to read packet data from the device even when the
packet is known bad. There is no need to assign the data to a variable
during this discard operation.

Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
 drivers/net/ethernet/davicom/dm9000.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 5c6c8c5ec747..3fdc70dab5c1 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -232,32 +232,29 @@ static void dm9000_inblk_32bit(void __iomem *reg, void *data, int count)
 static void dm9000_dumpblk_8bit(void __iomem *reg, int count)
 {
 	int i;
-	int tmp;
 
 	for (i = 0; i < count; i++)
-		tmp = readb(reg);
+		readb(reg);
 }
 
 static void dm9000_dumpblk_16bit(void __iomem *reg, int count)
 {
 	int i;
-	int tmp;
 
 	count = (count + 1) >> 1;
 
 	for (i = 0; i < count; i++)
-		tmp = readw(reg);
+		readw(reg);
 }
 
 static void dm9000_dumpblk_32bit(void __iomem *reg, int count)
 {
 	int i;
-	int tmp;
 
 	count = (count + 3) >> 2;
 
 	for (i = 0; i < count; i++)
-		tmp = readl(reg);
+		readl(reg);
 }
 
 /*
-- 
2.28.0