net: fix network drivers ndo_start_xmit() return values (part 2)
Fix up IRDA drivers that return an errno value to qdisc_restart(), causing
qdisc_restart() to print a warning an requeue/retransmit the skb.
- donauboe: intention appears to be to have the skb retransmitted without
error message
- irda-usb: intention is to drop silently according to comment
- kingsub-sir: skb is freed: use after free
- ks959-sir: skb is freed: use after free
- ksdazzle-sir: skb is freed: use after free
- mcs7880: skb is freed: use after free
All but donauboe compile tested.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/irda/kingsun-sir.c b/drivers/net/irda/kingsun-sir.c
index 9d813bc..c3e4e2c 100644
--- a/drivers/net/irda/kingsun-sir.c
+++ b/drivers/net/irda/kingsun-sir.c
@@ -156,9 +156,6 @@
int wraplen;
int ret = 0;
- if (skb == NULL || netdev == NULL)
- return -EINVAL;
-
netif_stop_queue(netdev);
/* the IRDA wrapping routines don't deal with non linear skb */
@@ -197,7 +194,7 @@
dev_kfree_skb(skb);
spin_unlock(&kingsun->lock);
- return ret;
+ return NETDEV_TX_OK;
}
/* Receive callback function */