linux-kernel - [PATCH 2/2] net: can: comparison of unsigned variable

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Message-Id: <1416318427-28676-2-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Tue, 18 Nov 2014 19:17:07 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Wolfgang Grandegger <wg@...ndegger.com>,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	Michal Simek <michal.simek@...inx.com>,
	Sören Brinkmann <soren.brinkmann@...inx.com>
Cc:	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	linux-can@...r.kernel.org, netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] net: can: comparison of unsigned variable

err was of the type u32. it was being compared with < 0, and being
an unsigned variable the comparison would have been always false.

moreover, err was getting the return value from set_reset_mode()
and xcan_set_bittiming(), and both are returning int.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
 drivers/net/can/xilinx_can.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index 72fe96f..67c2dd4 100644
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -300,7 +300,8 @@ static int xcan_set_bittiming(struct net_device *ndev)
 static int xcan_chip_start(struct net_device *ndev)
 {
 	struct xcan_priv *priv = netdev_priv(ndev);
-	u32 err, reg_msr, reg_sr_mask;
+	u32 reg_msr, reg_sr_mask;
+	int err;
 	unsigned long timeout;
 
 	/* Check if it is in reset mode */
-- 
1.8.1.2

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