From 4cc5bed1caeb6d40f2f41c4c5eb83368691fbffb Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Fri, 19 Aug 2016 05:50:05 -0300 Subject: [PATCH] [media] uvcvideo: Use memdup_user() rather than duplicating its implementation Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/uvc/uvc_v4l2.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 05eed4be25df..a7e12fd20adc 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -70,14 +70,9 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain, } size = xmap->menu_count * sizeof(*map->menu_info); - map->menu_info = kmalloc(size, GFP_KERNEL); - if (map->menu_info == NULL) { - ret = -ENOMEM; - goto done; - } - - if (copy_from_user(map->menu_info, xmap->menu_info, size)) { - ret = -EFAULT; + map->menu_info = memdup_user(xmap->menu_info, size); + if (IS_ERR(map->menu_info)) { + ret = PTR_ERR(map->menu_info); goto done; } -- 2.39.5