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From: singhalsimran0@gmail.com (simran singhal)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] staging: vc04_services: Clean up tests if NULL returned on failure
Date: Sat,  4 Mar 2017 22:16:55 +0530	[thread overview]
Message-ID: <1488646015-7059-4-git-send-email-singhalsimran0@gmail.com> (raw)
In-Reply-To: <1488646015-7059-1-git-send-email-singhalsimran0@gmail.com>

Some functions like kmalloc/kzalloc return NULL on failure.
When NULL represents failure, !x is commonly used.

This was done using Coccinelle:
@@
expression *e;
identifier l1;
@@

e = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\)(...);
...
- e == NULL
+ !e

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
---
 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c
index e0ba0ed..7fa0310 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c
@@ -52,7 +52,7 @@ int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size)
 	sema_init(&queue->push, 0);
 
 	queue->storage = kzalloc(size * sizeof(VCHIQ_HEADER_T *), GFP_KERNEL);
-	if (queue->storage == NULL) {
+	if (!queue->storage) {
 		vchiu_queue_delete(queue);
 		return 0;
 	}
-- 
2.7.4

  parent reply	other threads:[~2017-03-04 16:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-04 16:46 [PATCH 0/3] staging: Clean up tests if NULL returned on failure simran singhal
2017-03-04 16:46 ` [PATCH 1/3] staging: rtl8192u: " simran singhal
2017-03-04 16:46 ` [PATCH 2/3] staging: speakup: " simran singhal
2017-03-04 16:46 ` simran singhal [this message]
2017-03-04 17:29 ` [Outreachy kernel] [PATCH 0/3] staging: " Julia Lawall

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