[PATCH] ia64: sn: Use kmemdup rather than duplicating itsimplementation

[Thomas Meyer]

The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.

Signed-off-by: Thomas Meyer <thomas@xxxxxxxx>
---

diff -u -p a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
--- a/arch/ia64/sn/kernel/irq.c 2011-11-07 19:37:22.046225104 +0100
+++ b/arch/ia64/sn/kernel/irq.c 2011-11-08 11:01:33.601378758 +0100
@@ -150,12 +150,11 @@ struct sn_irq_info *sn_retarget_vector(s
 	 * PROM does not support SAL_INTR_REDIRECT, or it failed.
 	 * Revert to old method.
 	 */
-	new_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_ATOMIC);
+	new_irq_info = kmemdup(sn_irq_info, sizeof(struct sn_irq_info),
+			       GFP_ATOMIC);
 	if (new_irq_info == NULL)
 		return NULL;
 
-	memcpy(new_irq_info, sn_irq_info, sizeof(struct sn_irq_info));
-
 	/* Free the old PROM new_irq_info structure */
 	sn_intr_free(local_nasid, local_widget, new_irq_info);
 	unregister_intr_pda(new_irq_info);
--
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