linux-kernel - [PATCH] NTB: Fix static check warning in perf_clear

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Message-ID: <1586416284-3246-1-git-send-email-linjiasen@hygon.cn>
Date:   Thu, 9 Apr 2020 00:11:24 -0700
From:   Jiasen Lin <linjiasen@...on.cn>
To:     <linux-kernel@...r.kernel.org>, <linux-ntb@...glegroups.com>,
        <jdmason@...zu.us>, <dan.carpenter@...cle.com>
CC:     <allenbh@...il.com>, <dave.jiang@...el.com>,
        <zhangpanyong@...on.cn>, <linjiasen@...on.cn>
Subject: [PATCH] NTB: Fix static check warning in perf_clear_test

As pthr->dma_chan can't be NULL in this context, so there is
no need to check pthr->dma_chan.

Fixes: 99a06056124d ("NTB: ntb_perf: Fix address err in perf_copy_chunk")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Jiasen Lin <linjiasen@...on.cn>
---
 drivers/ntb/test/ntb_perf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index 972f6d9..f73b126 100644
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -1010,8 +1010,8 @@ static void perf_clear_test(struct perf_thread *pthr)
 				   pthr->perf->test_peer->dma_dst_addr,
 				   pthr->perf->test_peer->outbuf_size,
 				   DMA_FROM_DEVICE, 0);
-	if (pthr->dma_chan)
-		dma_release_channel(pthr->dma_chan);
+
+	dma_release_channel(pthr->dma_chan);
 
 no_dma_notify:
 	atomic_dec(&perf->tsync);
-- 
2.7.4