linux-kernel - [PATCH 2/4] 9p/rdma: remove useless check in cm_event

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Date:   Fri,  7 Sep 2018 18:50:55 +0200
From:   Dominique Martinet <asmadeus@...ewreck.org>
To:     v9fs-developer@...ts.sourceforge.net,
        Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Dominique Martinet <dominique.martinet@....fr>
Subject: [PATCH 2/4] 9p/rdma: remove useless check in cm_event_handler

From: Dominique Martinet <dominique.martinet@....fr>

the client c is always dereferenced to get the rdma struct, so c has to
be a valid pointer at this point.
Gcc would optimize that away but let's make coverity happy...

Addresses-Coverity-ID: 102778 ("Dereference before null check")
Signed-off-by: Dominique Martinet <dominique.martinet@....fr>
---
 net/9p/trans_rdma.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 9719bc4d9424..119103bfa82e 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -274,8 +274,7 @@ p9_cm_event_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
 	case RDMA_CM_EVENT_DISCONNECTED:
 		if (rdma)
 			rdma->state = P9_RDMA_CLOSED;
-		if (c)
-			c->status = Disconnected;
+		c->status = Disconnected;
 		break;
 
 	case RDMA_CM_EVENT_TIMEWAIT_EXIT:
-- 
2.17.1