Backport changeset from kernel mainstream

From: Mauro Carvalho Chehab <mchehab@infradead.org>


kernel-sync:

The original patch from Yoann Padioleau <padator@wanadoo.fr>:

Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when !=
\(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...)
S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/linux/drivers/media/video/msp3400-driver.c b/linux/drivers/media/video/msp3400-driver.c
index f8c594a09..32e8f630a 100644
--- a/linux/drivers/media/video/msp3400-driver.c
+++ b/linux/drivers/media/video/msp3400-driver.c
@@ -889,10 +889,9 @@ static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
 	int msp_product, msp_prod_hi, msp_prod_lo;
 	int msp_rom;
 
-	client = kmalloc(sizeof(*client), GFP_KERNEL);
+	client = kzalloc(sizeof(*client), GFP_KERNEL);
 	if (client == NULL)
 		return -ENOMEM;
-	memset(client, 0, sizeof(*client));
 	client->addr = address;
 	client->adapter = adapter;
 	client->driver = &i2c_driver;