diff mbox

[RESEND] scsi_sysfs: Fix queue_ramp_up_period return code

Message ID 562F48C2.1070803@linux.vnet.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Peter Oberparleiter Oct. 27, 2015, 9:49 a.m. UTC 
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>
Cc: stable@vger.kernel.org
---
 drivers/scsi/scsi_sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Matthew R. Ochs Oct. 28, 2015, 10:12 p.m. UTC | #1 
> On Oct 27, 2015, at 4:49 AM, Peter Oberparleiter <oberpar@linux.vnet.ibm.com> wrote:
> 
> 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>
> Cc: stable@vger.kernel.org
> ---
> 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 b333389..6b0f292 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,

Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>

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diff mbox

Patch

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index b333389..6b0f292 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,