From: Ezequiel Garcia <elezegarcia@gmail.com>
To: <linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>
Cc: Julia.Lawall@lip6.fr, kernel-janitors@vger.kernel.org,
Ezequiel Garcia <elezegarcia@gmail.com>,
Peter Senna Tschudin <peter.senna@gmail.com>
Subject: [PATCH 17/23] cx23885: Replace memcpy with struct assignment
Date: Tue, 23 Oct 2012 16:57:20 -0300 [thread overview]
Message-ID: <1351022246-8201-17-git-send-email-elezegarcia@gmail.com> (raw)
In-Reply-To: <1351022246-8201-1-git-send-email-elezegarcia@gmail.com>
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/)
// <smpl>
@@
identifier struct_name;
struct struct_name to;
struct struct_name from;
expression E;
@@
-memcpy(&(to), &(from), E);
+to = from;
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
---
drivers/media/pci/cx23885/cx23885-video.c | 3 +--
drivers/media/pci/cx23885/cx23888-ir.c | 6 ++----
2 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/media/pci/cx23885/cx23885-video.c b/drivers/media/pci/cx23885/cx23885-video.c
index 1a21926..62be144 100644
--- a/drivers/media/pci/cx23885/cx23885-video.c
+++ b/drivers/media/pci/cx23885/cx23885-video.c
@@ -1818,8 +1818,7 @@ int cx23885_video_register(struct cx23885_dev *dev)
spin_lock_init(&dev->slock);
/* Initialize VBI template */
- memcpy(&cx23885_vbi_template, &cx23885_video_template,
- sizeof(cx23885_vbi_template));
+ cx23885_vbi_template = cx23885_video_template;
strcpy(cx23885_vbi_template.name, "cx23885-vbi");
dev->tvnorm = cx23885_video_template.current_norm;
diff --git a/drivers/media/pci/cx23885/cx23888-ir.c b/drivers/media/pci/cx23885/cx23888-ir.c
index c2bc39c..e448146 100644
--- a/drivers/media/pci/cx23885/cx23888-ir.c
+++ b/drivers/media/pci/cx23885/cx23888-ir.c
@@ -1236,13 +1236,11 @@ int cx23888_ir_probe(struct cx23885_dev *dev)
cx23888_ir_write4(dev, CX23888_IR_IRQEN_REG, 0);
mutex_init(&state->rx_params_lock);
- memcpy(&default_params, &default_rx_params,
- sizeof(struct v4l2_subdev_ir_parameters));
+ default_params = default_rx_params;
v4l2_subdev_call(sd, ir, rx_s_parameters, &default_params);
mutex_init(&state->tx_params_lock);
- memcpy(&default_params, &default_tx_params,
- sizeof(struct v4l2_subdev_ir_parameters));
+ default_params = default_tx_params;
v4l2_subdev_call(sd, ir, tx_s_parameters, &default_params);
} else {
kfifo_free(&state->rx_kfifo);
--
1.7.4.4
next prev parent reply other threads:[~2012-10-23 19:59 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-23 19:57 [PATCH 01/23] uvc: Replace memcpy with struct assignment Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 02/23] cx231xx: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 03/23] usbvision: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 04/23] sn9c102: " Ezequiel Garcia
2012-10-24 0:50 ` Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 05/23] pwc: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 06/23] pvrusb2: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 07/23] hdpvr: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 08/23] cx25840: " Ezequiel Garcia
2012-10-23 22:20 ` Andy Walls
2012-10-23 19:57 ` [PATCH 09/23] zr36067: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 10/23] dvb-usb/friio-fe: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 11/23] au0828: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 12/23] tuners/xc4000: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 13/23] tuners/xc2028: " Ezequiel Garcia
2012-10-23 22:36 ` Andy Walls
2012-10-23 19:57 ` [PATCH 14/23] tuners/tda18271: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 15/23] ivtv: " Ezequiel Garcia
2012-10-23 22:08 ` Andy Walls
2012-10-24 0:28 ` Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 16/23] cx88: " Ezequiel Garcia
2012-10-23 19:57 ` Ezequiel Garcia [this message]
2012-10-23 22:16 ` [PATCH 17/23] cx23885: " Andy Walls
2012-10-24 0:52 ` Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 18/23] cx18: " Ezequiel Garcia
2012-10-23 22:17 ` Andy Walls
2012-10-23 19:57 ` [PATCH 19/23] bttv: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 20/23] dvb-core: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 21/23] dvb-frontends: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 22/23] radio-wl1273: " Ezequiel Garcia
2012-10-23 19:57 ` [PATCH 23/23] wl128x: " Ezequiel Garcia
2012-10-24 22:35 ` [PATCH 01/23] uvc: " Laurent Pinchart
2012-10-24 23:10 ` Andy Walls
2012-12-27 21:12 ` Ezequiel Garcia
2012-12-27 23:49 ` Mauro Carvalho Chehab
2013-01-10 0:19 ` Laurent Pinchart
2013-01-12 17:44 ` Ezequiel Garcia
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