wireless: Remove unnecessary alloc/OOM messages, alloc cleanups

alloc failures already get standardized OOM
messages and a dump_stack.

Convert kzalloc's with multiplies to kcalloc.
Convert kmalloc's with multiplies to kmalloc_array.
Remove now unused variables.
Remove unnecessary memset after kzalloc->kcalloc.
Whitespace cleanups for these changes.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/orinoco/main.c b/drivers/net/wireless/orinoco/main.c
index 1e802f8..38ec8d1 100644
--- a/drivers/net/wireless/orinoco/main.c
+++ b/drivers/net/wireless/orinoco/main.c
@@ -853,12 +853,8 @@
 	int err;
 
 	desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
-	if (!desc) {
-		printk(KERN_WARNING
-		       "%s: Can't allocate space for RX descriptor\n",
-		       dev->name);
+	if (!desc)
 		goto update_stats;
-	}
 
 	rxfid = hermes_read_regn(hw, RXFID);
 
@@ -1336,10 +1332,9 @@
 	unsigned long flags;
 
 	sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
-	if (!sd) {
-		printk(KERN_ERR "%s: failed to alloc memory\n", __func__);
+	if (!sd)
 		return;
-	}
+
 	sd->buf = buf;
 	sd->len = len;
 	sd->type = type;
@@ -1357,10 +1352,9 @@
 	unsigned long flags;
 
 	sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
-	if (!sd) {
-		printk(KERN_ERR "%s: failed to alloc memory\n", __func__);
+	if (!sd)
 		return;
-	}
+
 	sd->len = -1; /* Abort */
 
 	spin_lock_irqsave(&priv->scan_lock, flags);