diff options
| author | Lennart Sorensen <lsorense@csclub.uwaterloo.ca> | 2014-10-31 18:28:54 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-31 21:17:56 +0100 |
| commit | 6f979eb3fcfb4c3f42f230d174db4bbad0080710 (patch) | |
| tree | a5773dd32b92bda204ac7d91280e6aef51918924 /drivers/net/ethernet/ti | |
| parent | net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0 (diff) | |
| download | linux-6f979eb3fcfb4c3f42f230d174db4bbad0080710.tar.xz linux-6f979eb3fcfb4c3f42f230d174db4bbad0080710.zip | |
drivers: net: cpsw: Fix broken loop condition in switch mode
0d961b3b52f566f823070ce2366511a7f64b928c (drivers: net: cpsw: fix buggy
loop condition) accidentally fixed a loop comparison in too many places
while fixing a real bug.
It was correct to fix the dual_emac mode section since there 'i' is used
as an index into priv->slaves which is a 0 based array.
However the other two changes (which are only used in switch mode)
are wrong since there 'i' is actually the ALE port number, and port 0
is the host port, while port 1 and up are the slave ports.
Putting the loop condition back in the switch mode section fixes it.
A comment has been added to point out the intent clearly to avoid future
confusion. Also a comment is fixed that said the opposite of what was
actually happening.
Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ti')
| -rw-r--r-- | drivers/net/ethernet/ti/cpsw.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index d81b84b5e3df..fd4577d30c5d 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -591,8 +591,8 @@ static void cpsw_set_promiscious(struct net_device *ndev, bool enable) if (enable) { unsigned long timeout = jiffies + HZ; - /* Disable Learn for all ports */ - for (i = 0; i < priv->data.slaves; i++) { + /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */ + for (i = 0; i <= priv->data.slaves; i++) { cpsw_ale_control_set(ale, i, ALE_PORT_NOLEARN, 1); cpsw_ale_control_set(ale, i, @@ -616,11 +616,11 @@ static void cpsw_set_promiscious(struct net_device *ndev, bool enable) cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1); dev_dbg(&ndev->dev, "promiscuity enabled\n"); } else { - /* Flood All Unicast Packets to Host port */ + /* Don't Flood All Unicast Packets to Host port */ cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0); - /* Enable Learn for all ports */ - for (i = 0; i < priv->data.slaves; i++) { + /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */ + for (i = 0; i <= priv->data.slaves; i++) { cpsw_ale_control_set(ale, i, ALE_PORT_NOLEARN, 0); cpsw_ale_control_set(ale, i, |