[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/af_irda.c b/net/irda/af_irda.c
index 7fae48a..17699ee 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -308,7 +308,7 @@
 
 	IRDA_ASSERT(self != NULL, return;);
 
-	skb = dev_alloc_skb(64);
+	skb = alloc_skb(64, GFP_ATOMIC);
 	if (skb == NULL) {
 		IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
 			   __FUNCTION__);