From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ezequiel Garcia Date: Tue, 23 Oct 2012 19:57:21 +0000 Subject: [PATCH 18/23] cx18: Replace memcpy with struct assignment Message-Id: <1351022246-8201-18-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 , Andy Walls , 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: Andy Walls Signed-off-by: Peter Senna Tschudin Signed-off-by: Ezequiel Garcia --- drivers/media/pci/cx18/cx18-i2c.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/media/pci/cx18/cx18-i2c.c b/drivers/media/pci/cx18/cx18-i2c.c index 51609d5..930d40f 100644 --- a/drivers/media/pci/cx18/cx18-i2c.c +++ b/drivers/media/pci/cx18/cx18-i2c.c @@ -240,15 +240,13 @@ int init_cx18_i2c(struct cx18 *cx) for (i = 0; i < 2; i++) { /* Setup algorithm for adapter */ - memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template, - sizeof(struct i2c_algo_bit_data)); + cx->i2c_algo[i] = cx18_i2c_algo_template; cx->i2c_algo_cb_data[i].cx = cx; cx->i2c_algo_cb_data[i].bus_index = i; cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i]; /* Setup adapter */ - memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template, - sizeof(struct i2c_adapter)); + cx->i2c_adap[i] = cx18_i2c_adap_template; cx->i2c_adap[i].algo_data = &cx->i2c_algo[i]; sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name), " #%d-%d", cx->instance, i); -- 1.7.4.4