usb: cdc-wdm: use memdup_user
authorGeliang Tang <geliangtang@gmail.com>
Mon, 8 May 2017 15:14:39 +0000 (23:14 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 May 2017 10:20:53 +0000 (12:20 +0200)
commit64b9533ec14bdfb8e77bbe1ae4f4842043d22aeb
treed5ae1cd229b8fedbb4f9877cd7bdee6dea1b24b1
parent2ea659a9ef488125eb46da6eb571de5eae5c43f6
usb: cdc-wdm: use memdup_user

Use memdup_user() helper instead of open-coding to simplify the code.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-wdm.c