can: xilinx_can: Check return value of set_reset_mode

Check return value of set_reset_mode() for error.

Addresses-Coverity: "check_return"
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/bac2c2b857986472a11db341b3f6f7a8905ad0dd.1600073396.git.michal.simek@xilinx.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index d3c41e6c275d2fd2f4f52f6b22f8df609db64a04..9ea6ad73b07d873ef194fd597d8cabdbd59af175 100644 (file)
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -1369,9 +1369,13 @@ static irqreturn_t xcan_interrupt(int irq, void *dev_id)
 static void xcan_chip_stop(struct net_device *ndev)
 {
        struct xcan_priv *priv = netdev_priv(ndev);
+       int ret;
 
        /* Disable interrupts and leave the can in configuration mode */
-       set_reset_mode(ndev);
+       ret = set_reset_mode(ndev);
+       if (ret < 0)
+               netdev_dbg(ndev, "set_reset_mode() Failed\n");
+
        priv->can.state = CAN_STATE_STOPPED;
 }