From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ezequiel Garcia Date: Tue, 23 Oct 2012 19:57:08 +0000 Subject: [PATCH 05/23] pwc: Replace memcpy with struct assignment Message-Id: <1351022246-8201-5-git-send-email-elezegarcia@gmail.com> List-Id: References: <1351022246-8201-1-git-send-email-elezegarcia@gmail.com> In-Reply-To: <1351022246-8201-1-git-send-email-elezegarcia@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Cc: Julia.Lawall@lip6.fr, kernel-janitors@vger.kernel.org, Ezequiel Garcia , Hans de Goede , Peter Senna Tschudin This kind of memcpy() is error-prone. Its replacement with a struct assignment is prefered because it's type-safe and much easier to read. Found by coccinelle. Hand patched and reviewed. Tested by compilation only. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ identifier struct_name; struct struct_name to; struct struct_name from; expression E; @@ -memcpy(&(to), &(from), E); +to = from; // Cc: Hans de Goede Signed-off-by: Peter Senna Tschudin Signed-off-by: Ezequiel Garcia --- drivers/media/usb/pwc/pwc-if.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c index 42e36ba..cc5c7d8 100644 --- a/drivers/media/usb/pwc/pwc-if.c +++ b/drivers/media/usb/pwc/pwc-if.c @@ -1003,7 +1003,7 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id vb2_queue_init(&pdev->vb_queue); /* Init video_device structure */ - memcpy(&pdev->vdev, &pwc_template, sizeof(pwc_template)); + pdev->vdev = pwc_template; strcpy(pdev->vdev.name, name); pdev->vdev.queue = &pdev->vb_queue; pdev->vdev.queue->lock = &pdev->vb_queue_lock; -- 1.7.4.4