irttp: 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: David S. Miller <davem@davemloft.net>

diff --git a/net/irda/irttp.c b/net/irda/irttp.c
index 32e3bb0..5c93f29 100644 (file)
--- a/net/irda/irttp.c
+++ b/net/irda/irttp.c
@@ -1461,14 +1461,12 @@ struct tsap_cb *irttp_dup(struct tsap_cb *orig, void *instance)
        }
 
        /* Allocate a new instance */
-       new = kmalloc(sizeof(struct tsap_cb), GFP_ATOMIC);
+       new = kmemdup(orig, sizeof(struct tsap_cb), GFP_ATOMIC);
        if (!new) {
                IRDA_DEBUG(0, "%s(), unable to kmalloc\n", __func__);
                spin_unlock_irqrestore(&irttp->tsaps->hb_spinlock, flags);
                return NULL;
        }
-       /* Dup */
-       memcpy(new, orig, sizeof(struct tsap_cb));
        spin_lock_init(&new->lock);
 
        /* We don't need the old instance any more */