From 0b21d55f8904ff3d52262e91867f9eb2c0b472f3 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 1 Jul 2010 01:33:15 -0300 Subject: [PATCH] V4L/DVB: drivers/media/video/uvc: Use kmemdup Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // Signed-off-by: Julia Lawall Signed-off-by: Douglas Schilling Landgraf Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_driver.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index 838b56f097cf..45aac1041862 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -637,14 +637,13 @@ static int uvc_parse_streaming(struct uvc_device *dev, } streaming->header.bControlSize = n; - streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL); + streaming->header.bmaControls = kmemdup(&buffer[size], p * n, + GFP_KERNEL); if (streaming->header.bmaControls == NULL) { ret = -ENOMEM; goto error; } - memcpy(streaming->header.bmaControls, &buffer[size], p*n); - buflen -= buffer[0]; buffer += buffer[0]; -- GitLab