On Mon, 2015-11-09 at 16:08 +0100, Hannes Reinecke wrote:
> Use scsi_vpd_lun_id() to export the device id to sysfs.
>
> Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
> ---
> drivers/scsi/scsi_sysfs.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
> index 7b41b2c..aaa38c2 100644
> --- a/drivers/scsi/scsi_sysfs.c
> +++ b/drivers/scsi/scsi_sysfs.c
> @@ -903,6 +903,22 @@ sdev_show_function(queue_depth, "%d\n");
> static DEVICE_ATTR(queue_depth, S_IRUGO | S_IWUSR,
> sdev_show_queue_depth,
> sdev_store_queue_depth);
>
> +static ssize_t
> +sdev_show_device_id(struct device *dev, struct device_attribute
> *attr,
> + char *buf)
> +{
> + struct scsi_device *sdev = to_scsi_device(dev);
> + ssize_t count;
> +
> + count = scsi_vpd_lun_id(sdev, buf, PAGE_SIZE);
> + if (count > 0) {
> + buf[count] = '\n';
> + count++;
> + }
> + return count;
> +}
> +static DEVICE_ATTR(device_id, S_IRUGO, sdev_show_device_id, NULL);
> +
> #ifdef CONFIG_SCSI_DH
> static ssize_t
> sdev_show_dh_state(struct device *dev, struct device_attribute
> *attr,
> @@ -1026,6 +1042,7 @@ static struct attribute *scsi_sdev_attrs[] = {
> &dev_attr_modalias.attr,
> &dev_attr_queue_depth.attr,
> &dev_attr_queue_type.attr,
> + &dev_attr_device_id.attr,
> #ifdef CONFIG_SCSI_DH
> &dev_attr_dh_state.attr,
> #endif
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
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