[3.16.y-ckt stable] Patch "scsi_sysfs: Fix queue_ramp_up_period return code" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    scsi_sysfs: Fix queue_ramp_up_period return code

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt21.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 9f857f31019aa4be5ab09bd3cbe779c7d8e5aecd Mon Sep 17 00:00:00 2001
From: Peter Oberparleiter <oberpar at linux.vnet.ibm.com>
Date: Tue, 27 Oct 2015 10:49:54 +0100
Subject: scsi_sysfs: Fix queue_ramp_up_period return code

commit 863e02d0e173bb9d8cea6861be22820b25c076cc upstream.

Writing a number to /sys/bus/scsi/devices/<sdev>/queue_ramp_up_period
returns the value of that number instead of the number of bytes written.
This behavior can confuse programs expecting POSIX write() semantics.
Fix this by returning the number of bytes written instead.

Signed-off-by: Peter Oberparleiter <oberpar at linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare at suse.de>
Reviewed-by: Matthew R. Ochs <mrochs at linux.vnet.ibm.com>
Reviewed-by: Ewan D. Milne <emilne at redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen at oracle.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/scsi/scsi_sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index fee7d1aebc3e..7e78015d6ab7 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -891,7 +891,7 @@ sdev_store_queue_ramp_up_period(struct device *dev,
 		return -EINVAL;

 	sdev->queue_ramp_up_period = msecs_to_jiffies(period);
-	return period;
+	return count;
 }

 static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,