linux-kernel - [PATCH 1/5] um: port: Move an assignment for the variable "fd" in port

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Date:   Wed, 18 Jan 2017 22:56:17 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     user-mode-linux-devel@...ts.sourceforge.net,
        user-mode-linux-user@...ts.sourceforge.net,
        Anton Ivanov <aivanov@...-begemot.co.uk>,
        Dan Williams <dan.j.williams@...el.com>,
        Hannes Reinecke <hare@...e.com>, Jeff Dike <jdike@...toit.com>,
        Jens Axboe <axboe@...com>, Richard Weinberger <richard@....at>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/5] um: port: Move an assignment for the variable "fd" in
 port_wait()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 18 Jan 2017 21:40:29 +0100

A local variable was set to an error code in one case before a concrete
error situation was detected. Thus move the corresponding assignment into
an if branch to indicate a software failure there.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/um/drivers/port_kern.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index 40ca5cc275e9..b2bbda21c5f3 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -230,10 +230,10 @@ int port_wait(void *data)
 
 	atomic_inc(&port->wait_count);
 	while (1) {
-		fd = -ERESTARTSYS;
-		if (wait_for_completion_interruptible(&port->done))
+		if (wait_for_completion_interruptible(&port->done)) {
+			fd = -ERESTARTSYS;
 			goto out;
-
+		}
 		spin_lock(&port->lock);
 
 		conn = list_entry(port->connections.next, struct connection,
-- 
2.11.0