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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@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Peter Oberparleiter 2015-10-27 10:49:54 +01:00 committed by Zefan Li
parent 3d67710ac3
commit ca466a669d
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/scsi_sysfs.c
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@ -793,7 +793,7 @@ 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 struct device_attribute sdev_attr_queue_ramp_up_period =