[media] au0828: Replace memcpy with struct assignment
authorEzequiel Garcia <elezegarcia@gmail.com>
Tue, 23 Oct 2012 18:57:14 +0000 (15:57 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Thu, 27 Dec 2012 20:49:44 +0000 (18:49 -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: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/usb/au0828/au0828-cards.c
drivers/media/usb/au0828/au0828-i2c.c

index 88e35dfa33d47eeb989f76321a46c6722a8ca5f3..dd32decb237d3d5979c36a0a72fd478b57f1855c 100644 (file)
@@ -193,7 +193,7 @@ 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;
index 20d69b5652552fd6a0dab9ee1e2e3a81d5ab2f62..17ec3651b10e4b51bcf5be9f56fdfaf30d01597c 100644 (file)
@@ -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;