linux-kernel - [PATCH] xen/evtchn: replace if (cond) BUG() with BUG

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Message-Id: <1615950299-96787-1-git-send-email-jiapeng.chong@linux.alibaba.com>
Date:   Wed, 17 Mar 2021 11:04:59 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     boris.ostrovsky@...cle.com
Cc:     jgross@...e.com, sstabellini@...nel.org,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [PATCH] xen/evtchn: replace if (cond) BUG() with BUG_ON()

Fix the following coccicheck warnings:

./drivers/xen/evtchn.c:412:2-5: WARNING: Use BUG_ON instead of if
condition followed by BUG.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 drivers/xen/evtchn.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
index c99415a..b1c59bc 100644
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -408,8 +408,7 @@ static int evtchn_bind_to_user(struct per_user_data *u, evtchn_port_t port)
 err:
 	/* bind failed, should close the port now */
 	close.port = port;
-	if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)
-		BUG();
+	BUG_ON(HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0);
 	del_evtchn(u, evtchn);
 	return rc;
 }
-- 
1.8.3.1