1 files changed, 4 insertions, 10 deletions

diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index e087b9a6daaa..43b77271532b 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c
@@ -2038,16 +2038,10 @@ fst_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 
                 /* Now copy the data to the card. */
 
-                buf = kmalloc(wrthdr.size, GFP_KERNEL);
-                if (!buf)
-                        return -ENOMEM;
-
-                if (copy_from_user(buf,
-                                   ifr->ifr_data + sizeof (struct fstioc_write),
-                                   wrthdr.size)) {
-                        kfree(buf);
-                        return -EFAULT;
-                }
+                buf = memdup_user(ifr->ifr_data + sizeof(struct fstioc_write),
+                                  wrthdr.size);
+                if (IS_ERR(buf))
+                        return PTR_ERR(buf);
 
                 memcpy_toio(card->mem + wrthdr.offset, buf, wrthdr.size);
                 kfree(buf);