From: Hari Prasath Gujulan Elango <hguju...@visteon.com>

This patch replaces the kmalloc followed by copy_from_user by the
wrapper routine memdup_user.

Signed-off-by: Hari Prasath Gujulan Elango <hguju...@visteon.com>
---
 drivers/staging/wilc1000/linux_wlan.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/wilc1000/linux_wlan.c 
b/drivers/staging/wilc1000/linux_wlan.c
index e92ba59..173b958 100644
--- a/drivers/staging/wilc1000/linux_wlan.c
+++ b/drivers/staging/wilc1000/linux_wlan.c
@@ -2459,16 +2459,10 @@ int mac_ioctl(struct net_device *ndev, struct ifreq 
*req, int cmd)
                size = wrq->u.data.length;
 
                if (size && wrq->u.data.pointer) {
-                       buff = kmalloc(size, GFP_KERNEL);
-                       if (!buff) {
-                               s32Error = -ENOMEM;
-                               goto done;
-                       }
 
-                       if (copy_from_user
-                                   (buff, wrq->u.data.pointer,
-                                   wrq->u.data.length)) {
-                               s32Error = -EFAULT;
+                       buff = memdup_user(wrq->u.data.pointer, 
wrq->u.data.length);
+                       if (IS_ERR(buff)) {
+                               s32Error = PTR_ERR(buff);
                                goto done;
                        }
 
-- 
1.9.1
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