net: fix network drivers ndo_start_xmit() return values (part 5)

net: fix network drivers ndo_start_xmit() return values (part 5)

[Patrick McHardy]

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commit a457e7b57fba9fe2209890bb068ecae60285d0db
Author: Patrick McHardy <kaber@trash.net>
Date:   Fri Jun 12 17:07:07 2009 +0200

    net: fix network drivers ndo_start_xmit() return values (part 5)
    
    Fix up s390 drivers that return an errno value to qdisc_restart(), causing
    qdisc_restart() to print a warning an requeue/retransmit the skb.
    
    - claw: impossible condition, simply remove it
    
    Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 30a43cc..7b6f46d 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -338,12 +338,6 @@ claw_tx(struct sk_buff *skb, struct net_device *dev)
 
 	CLAW_DBF_TEXT(4, trace, "claw_tx");
         p_ch=&privptr->channel[WRITE];
-        if (skb == NULL) {
-                privptr->stats.tx_dropped++;
-		privptr->stats.tx_errors++;
-		CLAW_DBF_TEXT_(2, trace, "clawtx%d", -EIO);
-                return -EIO;
-        }
         spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags);
         rc=claw_hw_tx( skb, dev, 1 );
         spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags);