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 11/23] au0828: Replace memcpy with struct assignment Date: Tue, 23 Oct 2012 16:57:14 -0300 [thread overview] Message-ID: <1351022246-8201-11-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/usb/au0828/au0828-cards.c | 2 +- drivers/media/usb/au0828/au0828-i2c.c | 9 +++------ 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-cards.c b/drivers/media/usb/au0828/au0828-cards.c index 448361c..8830d6d 100644 --- a/drivers/media/usb/au0828/au0828-cards.c +++ b/drivers/media/usb/au0828/au0828-cards.c @@ -192,7 +192,7 @@ void au0828_card_setup(struct au0828_dev *dev) dprintk(1, "%s()\n", __func__); - memcpy(&dev->board, &au0828_boards[dev->boardnr], sizeof(dev->board)); + dev->board = au0828_boards[dev->boardnr]; if (dev->i2c_rc == 0) { dev->i2c_client.addr = 0xa0 >> 1; diff --git a/drivers/media/usb/au0828/au0828-i2c.c b/drivers/media/usb/au0828/au0828-i2c.c index 4ded17f..71fbe59 100644 --- a/drivers/media/usb/au0828/au0828-i2c.c +++ b/drivers/media/usb/au0828/au0828-i2c.c @@ -364,12 +364,9 @@ int au0828_i2c_register(struct au0828_dev *dev) { dprintk(1, "%s()\n", __func__); - memcpy(&dev->i2c_adap, &au0828_i2c_adap_template, - sizeof(dev->i2c_adap)); - memcpy(&dev->i2c_algo, &au0828_i2c_algo_template, - sizeof(dev->i2c_algo)); - memcpy(&dev->i2c_client, &au0828_i2c_client_template, - sizeof(dev->i2c_client)); + dev->i2c_adap = au0828_i2c_adap_template; + dev->i2c_algo = au0828_i2c_algo_template; + dev->i2c_client = au0828_i2c_client_template; dev->i2c_adap.dev.parent = &dev->usbdev->dev; -- 1.7.4.4
WARNING: multiple messages have this Message-ID (diff)
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 11/23] au0828: Replace memcpy with struct assignment Date: Tue, 23 Oct 2012 19:57:14 +0000 [thread overview] Message-ID: <1351022246-8201-11-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/usb/au0828/au0828-cards.c | 2 +- drivers/media/usb/au0828/au0828-i2c.c | 9 +++------ 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-cards.c b/drivers/media/usb/au0828/au0828-cards.c index 448361c..8830d6d 100644 --- a/drivers/media/usb/au0828/au0828-cards.c +++ b/drivers/media/usb/au0828/au0828-cards.c @@ -192,7 +192,7 @@ void au0828_card_setup(struct au0828_dev *dev) dprintk(1, "%s()\n", __func__); - memcpy(&dev->board, &au0828_boards[dev->boardnr], sizeof(dev->board)); + dev->board = au0828_boards[dev->boardnr]; if (dev->i2c_rc = 0) { dev->i2c_client.addr = 0xa0 >> 1; diff --git a/drivers/media/usb/au0828/au0828-i2c.c b/drivers/media/usb/au0828/au0828-i2c.c index 4ded17f..71fbe59 100644 --- a/drivers/media/usb/au0828/au0828-i2c.c +++ b/drivers/media/usb/au0828/au0828-i2c.c @@ -364,12 +364,9 @@ int au0828_i2c_register(struct au0828_dev *dev) { dprintk(1, "%s()\n", __func__); - memcpy(&dev->i2c_adap, &au0828_i2c_adap_template, - sizeof(dev->i2c_adap)); - memcpy(&dev->i2c_algo, &au0828_i2c_algo_template, - sizeof(dev->i2c_algo)); - memcpy(&dev->i2c_client, &au0828_i2c_client_template, - sizeof(dev->i2c_client)); + dev->i2c_adap = au0828_i2c_adap_template; + dev->i2c_algo = au0828_i2c_algo_template; + dev->i2c_client = au0828_i2c_client_template; dev->i2c_adap.dev.parent = &dev->usbdev->dev; -- 1.7.4.4
next prev parent reply other threads:[~2012-10-23 20:04 UTC|newest] Thread overview: 74+ 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 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 02/23] cx231xx: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 03/23] usbvision: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 04/23] sn9c102: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-24 0:50 ` 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 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 06/23] pvrusb2: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 07/23] hdpvr: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 08/23] cx25840: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 22:20 ` Andy Walls 2012-10-23 22:20 ` Andy Walls 2012-10-23 19:57 ` [PATCH 09/23] zr36067: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 10/23] dvb-usb/friio-fe: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia [this message] 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 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 13/23] tuners/xc2028: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 22:36 ` Andy Walls 2012-10-23 22:36 ` Andy Walls 2012-10-23 19:57 ` [PATCH 14/23] tuners/tda18271: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 15/23] ivtv: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 22:08 ` Andy Walls 2012-10-23 22:08 ` Andy Walls 2012-10-24 0:28 ` Ezequiel Garcia 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 2012-10-23 19:57 ` [PATCH 17/23] cx23885: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 22:16 ` Andy Walls 2012-10-23 22:16 ` Andy Walls 2012-10-24 0:52 ` Ezequiel Garcia 2012-10-24 0:52 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 18/23] cx18: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 22:17 ` Andy Walls 2012-10-23 22:17 ` Andy Walls 2012-10-23 19:57 ` [PATCH 19/23] bttv: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 20/23] dvb-core: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 21/23] dvb-frontends: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 22/23] radio-wl1273: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-23 19:57 ` [PATCH 23/23] wl128x: " Ezequiel Garcia 2012-10-23 19:57 ` Ezequiel Garcia 2012-10-24 22:35 ` [PATCH 01/23] uvc: " Laurent Pinchart 2012-10-24 22:35 ` Laurent Pinchart 2012-10-24 23:10 ` Andy Walls 2012-10-24 23:10 ` Andy Walls 2012-12-27 21:12 ` Ezequiel Garcia 2012-12-27 21:12 ` Ezequiel Garcia 2012-12-27 23:49 ` Mauro Carvalho Chehab 2012-12-27 23:49 ` Mauro Carvalho Chehab 2013-01-10 0:19 ` Laurent Pinchart 2013-01-10 0:19 ` Laurent Pinchart 2013-01-12 17:44 ` Ezequiel Garcia 2013-01-12 17:44 ` Ezequiel Garcia
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