linux-kernel - [PATCH 18/39] whci: drop null test before destroy functions

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Message-Id: <1442146532-9100-19-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sun, 13 Sep 2015 14:15:11 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	sergey.senozhatsky@...il.com, kernel-janitors@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 18/39] whci: drop null test before destroy functions

Remove unneeded NULL test.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression x; @@
-if (x != NULL)
  \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/usb/host/whci/init.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/host/whci/init.c b/drivers/usb/host/whci/init.c
index d3e13b6..e363723 100644
--- a/drivers/usb/host/whci/init.c
+++ b/drivers/usb/host/whci/init.c
@@ -175,8 +175,7 @@ void whc_clean_up(struct whc *whc)
 	pzl_clean_up(whc);
 	asl_clean_up(whc);
 
-	if (whc->qset_pool)
-		dma_pool_destroy(whc->qset_pool);
+	dma_pool_destroy(whc->qset_pool);
 
 	len   = resource_size(&whc->umc->resource);
 	if (whc->base)

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