[IrDA]: Use alloc_skb() in IrDA TX path

As pointed out by Christoph Hellwig, dev_alloc_skb() is not intended to be
used for allocating TX sk_buff. The IrDA stack was exclusively calling
dev_alloc_skb() on the TX path, and this patch fixes that.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/irda/ircomm/ircomm_param.c b/net/irda/ircomm/ircomm_param.c
index 6009bab..a39f573 100644
--- a/net/irda/ircomm/ircomm_param.c
+++ b/net/irda/ircomm/ircomm_param.c
@@ -121,7 +121,7 @@
 
 	skb = self->ctrl_skb;	
 	if (!skb) {
-		skb = dev_alloc_skb(256);
+		skb = alloc_skb(256, GFP_ATOMIC);
 		if (!skb) {
 			spin_unlock_irqrestore(&self->spinlock, flags);
 			return -ENOMEM;