Fix following coccicheck warning:
./drivers/staging/r8188eu/os_dep/ioctl_linux.c:1986:8-15: WARNING
opportunity for memdup_user.
Use memdup_user rather than duplicating its implementation, which
makes code simple and easy to understand.
Signed-off-by: Wan Jiabing <wanjiabing@xxxxxxxx>
---
drivers/staging/r8188eu/os_dep/ioctl_linux.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
index 4f0ae821d193..301a29984fad 100644
--- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
@@ -1983,14 +1983,9 @@ static int rtw_wx_read32(struct net_device *dev,
padapter = (struct adapter *)rtw_netdev_priv(dev);
p = &wrqu->data;
len = p->length;
- ptmp = kmalloc(len, GFP_KERNEL);
- if (!ptmp)
- return -ENOMEM;
-
- if (copy_from_user(ptmp, p->pointer, len)) {
- kfree(ptmp);
- return -EFAULT;
- }
+ ptmp = memdup_user(p->pointer, len);
+ if (IS_ERR(ptmp))
+ return PTR_ERR(ptmp);
bytes = 0;
addr = 0;
--
2.20.1
