[media] cx18: Replace memcpy with struct assignment
authorEzequiel Garcia <elezegarcia@gmail.com>
Tue, 23 Oct 2012 18:57:21 +0000 (15:57 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Thu, 27 Dec 2012 21:02:24 +0000 (19:02 -0200)
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>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/pci/cx18/cx18-i2c.c

index 4908eb7..d61ac63 100644 (file)
@@ -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);