linux-kernel - [PATCH] usb: gadget: rndis: fix itnull.cocci warnings

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Date:	Mon, 25 Jan 2016 16:21:54 +0100 (CET)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Geliang Tang <geliangtang@....com>
cc:	linux-usb@...r.kernel.org, kbuild-all@...org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <balbi@...com>,
	Andrzej Pietrasiewicz <andrzej.p@...sung.com>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] usb: gadget: rndis: fix itnull.cocci warnings

The index variable of list_for_each_entry_safe is an offset from a list
pointer, and thus should not be NULL.

Generated by: scripts/coccinelle/iterators/itnull.cocci

CC: Geliang Tang <geliangtang@....com>
Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
Signed-off-by: Julia Lawall <julia.lawall@...6.fr>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
usb-testing
head:   0e781c2258ffb2a42bf44f62dea8662f38cbfd34
commit: f6281af9d62e128aa6efad29cf7265062af114f2 [27/38] usb: gadget:
rndis: use list_for_each_entry_safe

 rndis.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/function/rndis.c
+++ b/drivers/usb/gadget/function/rndis.c
@@ -1009,7 +1009,7 @@ void rndis_free_response(struct rndis_pa
 	rndis_resp_t *r, *n;

 	list_for_each_entry_safe(r, n, &params->resp_queue, list) {
-		if (r && r->buf == buf) {
+		if (r->buf == buf) {
 			list_del(&r->list);
 			kfree(r);
 		}