Merge branch 'master' of git://git.infradead.org/users/cbou/linux-cns3xxx into devel...

[pandora-kernel.git] / drivers / ata / libata-scsi.c

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index cfa9dd3..a54273d 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -414,6 +414,35 @@ int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
        return 0;
 }
 
+/**
+ *     ata_scsi_unlock_native_capacity - unlock native capacity
+ *     @sdev: SCSI device to adjust device capacity for
+ *
+ *     This function is called if a partition on @sdev extends beyond
+ *     the end of the device.  It requests EH to unlock HPA.
+ *
+ *     LOCKING:
+ *     Defined by the SCSI layer.  Might sleep.
+ */
+void ata_scsi_unlock_native_capacity(struct scsi_device *sdev)
+{
+       struct ata_port *ap = ata_shost_to_port(sdev->host);
+       struct ata_device *dev;
+       unsigned long flags;
+
+       spin_lock_irqsave(ap->lock, flags);
+
+       dev = ata_scsi_find_dev(ap, sdev);
+       if (dev && dev->n_sectors < dev->n_native_sectors) {
+               dev->flags |= ATA_DFLAG_UNLOCK_HPA;
+               dev->link->eh_info.action |= ATA_EH_RESET;
+               ata_port_schedule_eh(ap);
+       }
+
+       spin_unlock_irqrestore(ap->lock, flags);
+       ata_port_wait_eh(ap);
+}
+
 /**
  *     ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl
  *     @ap: target port