can: bittiming: can_validate_bitrate(): simplify bit rate checking

This patch simplifies the validation of the fixed bit rates. If a
supported bit rate is found, directly return 0.

If no valid bit rate is found return -EINVAL;

Link: https://lore.kernel.org/all/20220124215642.3474154-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/dev/bittiming.c b/drivers/net/can/dev/bittiming.c
index d5fca3b..1b1d149 100644 (file)
--- a/drivers/net/can/dev/bittiming.c
+++ b/drivers/net/can/dev/bittiming.c
@@ -248,18 +248,14 @@ can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt,
                     const u32 *bitrate_const,
                     const unsigned int bitrate_const_cnt)
 {
-       struct can_priv *priv = netdev_priv(dev);
        unsigned int i;
 
        for (i = 0; i < bitrate_const_cnt; i++) {
                if (bt->bitrate == bitrate_const[i])
-                       break;
+                       return 0;
        }
 
-       if (i >= priv->bitrate_const_cnt)
-               return -EINVAL;
-
-       return 0;
+       return -EINVAL;
 }
 
 int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,