linux-kernel - [PATCH 29/39] thunderbolt: drop null test before destroy functions

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Date:	Sun, 13 Sep 2015 14:15:22 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Andreas Noever <andreas.noever@...il.com>
Cc:	sergey.senozhatsky@...il.com, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 29/39] thunderbolt: 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/thunderbolt/ctl.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/thunderbolt/ctl.c b/drivers/thunderbolt/ctl.c
index 799634b..163b283 100644
--- a/drivers/thunderbolt/ctl.c
+++ b/drivers/thunderbolt/ctl.c
@@ -530,8 +530,7 @@ void tb_ctl_free(struct tb_ctl *ctl)
 		tb_ctl_pkg_free(ctl->rx_packets[i]);
 
 
-	if (ctl->frame_pool)
-		dma_pool_destroy(ctl->frame_pool);
+	dma_pool_destroy(ctl->frame_pool);
 	kfree(ctl);
 }
 

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