Commit 8cb708f3 authored Dec 20, 2015 by Julia Lawall Committed by Martin Schwidefsky Dec 30, 2015

s390/cio: add NULL test

Add NULL test on call to kzalloc.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/

)

// <smpl>
@@
expression x;
identifier fld;
@@

* x = kzalloc(...);
  ... when != x == NULL
  x->fld
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 11b64c8a

drivers/s390/char/con3215.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -922,6 +922,8 @@ static int __init con3215_init(void)
		spin_lock_init(&raw3215_freelist_lock);
		for (i = 0; i < NR_3215_REQ; i++) {
		req = kzalloc(sizeof(struct raw3215_req), GFP_KERNEL \| GFP_DMA);
		if (!req)
		return -ENOMEM;
		req->next = raw3215_freelist;
		raw3215_freelist = req;
		}