[IrDA]: Memory allocations cleanups

This patch replaces the bunch of arbitrary 64 and 128 bytes alloc_skb() calls
with more accurate allocation sizes.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/irda/iriap.c b/net/irda/iriap.c
index 61128aa..415cf4e 100644
--- a/net/irda/iriap.c
+++ b/net/irda/iriap.c
@@ -345,10 +345,11 @@
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
 
-	tx_skb = alloc_skb(64, GFP_ATOMIC);
+	tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
 	if (tx_skb == NULL) {
-		IRDA_DEBUG(0, "%s(), Could not allocate an sk_buff of length %d\n", 
-			__FUNCTION__, 64);
+		IRDA_DEBUG(0,
+			   "%s(), Could not allocate an sk_buff of length %d\n",
+			   __FUNCTION__, LMP_MAX_HEADER);
 		return;
 	}
 
@@ -701,7 +702,7 @@
 	IRDA_ASSERT(self != NULL, return;);
 	IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
 
-	tx_skb = alloc_skb(64, GFP_ATOMIC);
+	tx_skb = alloc_skb(LMP_MAX_HEADER + 1, GFP_ATOMIC);
 	if (!tx_skb)
 		return;