linux-kernel - [PATCH 4.4 100/312] xprtrdma: checking for NULL instead of IS

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Message-Id: <20200508123131.557610584@linuxfoundation.org>
Date:   Fri,  8 May 2020 14:31:31 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Anna Schumaker <Anna.Schumaker@...app.com>
Subject: [PATCH 4.4 100/312] xprtrdma: checking for NULL instead of IS_ERR()

From: Dan Carpenter <dan.carpenter@...cle.com>

commit abfb689711aaebd14d893236c6ea4bcdfb61e74c upstream.

The rpcrdma_create_req() function returns error pointers or success.  It
never returns NULL.

Fixes: f531a5dbc451 ('xprtrdma: Pre-allocate backward rpc_rqst and send/receive buffers')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@...app.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/sunrpc/xprtrdma/backchannel.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/sunrpc/xprtrdma/backchannel.c
+++ b/net/sunrpc/xprtrdma/backchannel.c
@@ -42,8 +42,8 @@ static int rpcrdma_bc_setup_rqst(struct
 	size_t size;
 
 	req = rpcrdma_create_req(r_xprt);
-	if (!req)
-		return -ENOMEM;
+	if (IS_ERR(req))
+		return PTR_ERR(req);
 	req->rl_backchannel = true;
 
 	size = RPCRDMA_INLINE_WRITE_THRESHOLD(rqst);