From: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Date: Mon, 26 Oct 2015 14:54:23 +0000 (+0100)
Subject: scsi_sysfs: Fix queue_ramp_up_period return code
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5cb9b40d6127fed91b00abe44498f19f6ed6a77f;p=linux-beck.git

scsi_sysfs: Fix queue_ramp_up_period return code

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@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
---

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 0efc21d271b4..db8b21b14117 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -898,7 +898,7 @@ 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,