From mboxrd@z Thu Jan 1 00:00:00 1970 From: elfring@users.sourceforge.net (SF Markus Elfring) Date: Mon, 16 Nov 2015 22:23:01 +0100 Subject: [PATCH 1/3] ste_dma40: Delete an unnecessary check before the function call "kmem_cache_destroy" In-Reply-To: <564A4899.8040109@users.sourceforge.net> References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.sourceforge.net> <564A4899.8040109@users.sourceforge.net> Message-ID: <564A4935.6010307@users.sourceforge.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Markus Elfring Date: Mon, 16 Nov 2015 20:26:27 +0100 The kmem_cache_destroy() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring --- drivers/dma/ste_dma40.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index dd3e7ba..9132ae0 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -3694,8 +3694,7 @@ static int __init d40_probe(struct platform_device *pdev) failure: if (base) { - if (base->desc_slab) - kmem_cache_destroy(base->desc_slab); + kmem_cache_destroy(base->desc_slab); if (base->virtbase) iounmap(base->virtbase); -- 2.6.2