[ATA_LPM_MIN_POWER] = "min_power",
};
-static ssize_t ata_scsi_lpm_store(struct device *dev,
+static ssize_t ata_scsi_lpm_store(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct Scsi_Host *shost = class_to_shost(dev);
+ struct Scsi_Host *shost = class_to_shost(device);
struct ata_port *ap = ata_shost_to_port(shost);
+ struct ata_link *link;
+ struct ata_device *dev;
enum ata_lpm_policy policy;
unsigned long flags;
return -EINVAL;
spin_lock_irqsave(ap->lock, flags);
+
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, &ap->link, ENABLED) {
+ if (dev->horkage & ATA_HORKAGE_NOLPM) {
+ count = -EOPNOTSUPP;
+ goto out_unlock;
+ }
+ }
+ }
+
ap->target_lpm_policy = policy;
ata_port_schedule_eh(ap);
+out_unlock:
spin_unlock_irqrestore(ap->lock, flags);
-
return count;
}
struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
- if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY))
+ if (atadev && ap->ops->sw_activity_show &&
+ (ap->flags & ATA_FLAG_SW_ACTIVITY))
return ap->ops->sw_activity_show(atadev, buf);
return -EINVAL;
}
enum sw_activity val;
int rc;
- if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
+ if (atadev && ap->ops->sw_activity_store &&
+ (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
val = simple_strtoul(buf, NULL, 0);
switch (val) {
case OFF: case BLINK_ON: case BLINK_OFF:
/**
* __ata_change_queue_depth - helper for ata_scsi_change_queue_depth
+ * @ap: ATA port to which the device change the queue depth
+ * @sdev: SCSI device to configure queue depth for
+ * @queue_depth: new queue depth
+ * @reason: calling context
*
* libsas and libata have different approaches for associating a sdev to
* its ata_port.