drivers: net: cpsw: fix buggy loop condition

Commit 0cd8f9cc0654c06adde353c6532114c5f53a18e8 ("drivers: net: cpsw:
enable promiscuous mode support")

Enable promiscuous mode support for CPSW.

Introduced a crash on an am335x based board (similiar to am335x-evm).
Reason is buggy end condition in for loop in cpsw_set_promiscious()

for (i = 0; i <= priv->data.slaves; i++)

should be

for (i = 0; i < priv->data.slaves; i++)

Fix this ...

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Markus Pargmann <mpa@pengutronix.de>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 542c511..651087b 100644 (file)
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -554,7 +554,7 @@ static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
                 * common for both the interface as the interface shares
                 * the same hardware resource.
                 */
-               for (i = 0; i <= priv->data.slaves; i++)
+               for (i = 0; i < priv->data.slaves; i++)
                        if (priv->slaves[i].ndev->flags & IFF_PROMISC)
                                flag = true;
 
@@ -578,7 +578,7 @@ static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
                        unsigned long timeout = jiffies + HZ;
 
                        /* Disable Learn for all ports */
-                       for (i = 0; i <= priv->data.slaves; i++) {
+                       for (i = 0; i < priv->data.slaves; i++) {
                                cpsw_ale_control_set(ale, i,
                                                     ALE_PORT_NOLEARN, 1);
                                cpsw_ale_control_set(ale, i,
@@ -606,7 +606,7 @@ static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
                        cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
 
                        /* Enable Learn for all ports */
-                       for (i = 0; i <= priv->data.slaves; i++) {
+                       for (i = 0; i < priv->data.slaves; i++) {
                                cpsw_ale_control_set(ale, i,
                                                     ALE_PORT_NOLEARN, 0);
                                cpsw_ale_control_set(ale, i,