ia64: sn: Use kmemdup rather than duplicating its implementation

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

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 485c42d97e83..dfac09ab027a 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -150,12 +150,11 @@ struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *sn_irq_info,
          * 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);