linux-kernel - [PATCH 3.2 076/152] video/fbdev: fix defio's fsync

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Message-ID: <lsq.1424137613.938558433@decadent.org.uk>
Date:	Tue, 17 Feb 2015 01:46:53 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Tomi Valkeinen" <tomi.valkeinen@...com>
Subject: [PATCH 3.2 076/152] video/fbdev: fix defio's fsync

3.2.67-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Tomi Valkeinen <tomi.valkeinen@...com>

commit 30ea9c5218651bc11cbdba7820be78f04e2d83bc upstream.

fb_deferred_io_fsync() returns the value of schedule_delayed_work() as
an error code, but schedule_delayed_work() does not return an error. It
returns true/false depending on whether the work was already queued.

Fix this by ignoring the return value of schedule_delayed_work().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/video/fb_defio.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/video/fb_defio.c
+++ b/drivers/video/fb_defio.c
@@ -83,9 +83,10 @@ int fb_deferred_io_fsync(struct file *fi
 	cancel_delayed_work_sync(&info->deferred_work);
 
 	/* Run it immediately */
-	err = schedule_delayed_work(&info->deferred_work, 0);
+	schedule_delayed_work(&info->deferred_work, 0);
 	mutex_unlock(&inode->i_mutex);
-	return err;
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(fb_deferred_io_fsync);
 

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