linux-kernel - [PATCH] rocket: Fix mutex locking compile warning

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Message-Id: <200707120156.32795.mb@bu3sch.de>
Date:	Thu, 12 Jul 2007 01:56:32 +0200
From:	Michael Buesch <mb@...sch.de>
To:	tytso@....edu, Andrew Morton <akpm@...ux-foundation.org>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: [PATCH] rocket: Fix mutex locking compile warning

This fixes

drivers/char/rocket.c: In function ‘rp_write’:
drivers/char/rocket.c:1705: warning: ignoring return value of ‘mutex_lock_interruptible’, declared with attribute warn_unused_result

Signed-off-by: Michael Buesch <mb@...sch.de>

Index: bu3sch-wireless-dev/drivers/char/rocket.c
===================================================================
--- bu3sch-wireless-dev.orig/drivers/char/rocket.c	2007-05-18 18:09:48.000000000 +0200
+++ bu3sch-wireless-dev/drivers/char/rocket.c	2007-07-12 01:52:44.000000000 +0200
@@ -1702,7 +1702,8 @@ static int rp_write(struct tty_struct *t
 	if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
 		return 0;
 
-	mutex_lock_interruptible(&info->write_mtx);
+	if (mutex_lock_interruptible(&info->write_mtx))
+		return -ERESTARTSYS;
 
 #ifdef ROCKET_DEBUG_WRITE
 	printk(KERN_INFO "rp_write %d chars...", count);

-- 
Greetings Michael.
-
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