From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ezequiel Garcia Date: Tue, 23 Oct 2012 19:57:22 +0000 Subject: [PATCH 19/23] bttv: Replace memcpy with struct assignment Message-Id: <1351022246-8201-19-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 , 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; // Signed-off-by: Peter Senna Tschudin Signed-off-by: Ezequiel Garcia --- drivers/media/pci/bt8xx/bttv-i2c.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/media/pci/bt8xx/bttv-i2c.c b/drivers/media/pci/bt8xx/bttv-i2c.c index 580c8e6..7398afa 100644 --- a/drivers/media/pci/bt8xx/bttv-i2c.c +++ b/drivers/media/pci/bt8xx/bttv-i2c.c @@ -366,8 +366,7 @@ int __devinit init_bttv_i2c(struct bttv *btv) strlcpy(btv->c.i2c_adap.name, "bttv", sizeof(btv->c.i2c_adap.name)); - memcpy(&btv->i2c_algo, &bttv_i2c_algo_bit_template, - sizeof(bttv_i2c_algo_bit_template)); + btv->i2c_algo = bttv_i2c_algo_bit_template; btv->i2c_algo.udelay = i2c_udelay; btv->i2c_algo.data = btv; btv->c.i2c_adap.algo_data = &btv->i2c_algo; -- 1.7.4.4