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staging: wilc1000: use memdup_user

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

Signed-off-by: Hari Prasath Gujulan Elango <hgujulan@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hari Prasath Gujulan Elango 2015-06-11 07:48:13 +00:00 committed by Greg Kroah-Hartman
parent 2235fb69ef
commit 4a01f1c3ab
1 changed files with 3 additions and 9 deletions
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12
drivers/staging/wilc1000/linux_wlan.c
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@ -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;
}