SCSI: implement sd_unlock_native_capacity()

[pandora-kernel.git] / drivers / scsi / sd.c

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 829cc37..8802e48 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -97,6 +97,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
 #endif
 
 static int  sd_revalidate_disk(struct gendisk *);
+static void sd_unlock_native_capacity(struct gendisk *disk);
 static int  sd_probe(struct device *);
 static int  sd_remove(struct device *);
 static void sd_shutdown(struct device *);
@@ -1101,6 +1102,7 @@ static const struct block_device_operations sd_fops = {
 #endif
        .media_changed          = sd_media_changed,
        .revalidate_disk        = sd_revalidate_disk,
+       .unlock_native_capacity = sd_unlock_native_capacity,
 };
 
 static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd)
@@ -2120,6 +2122,26 @@ static int sd_revalidate_disk(struct gendisk *disk)
        return 0;
 }
 
+/**
+ *     sd_unlock_native_capacity - unlock native capacity
+ *     @disk: struct gendisk to set capacity for
+ *
+ *     Block layer calls this function if it detects that partitions
+ *     on @disk reach beyond the end of the device.  If the SCSI host
+ *     implements ->unlock_native_capacity() method, it's invoked to
+ *     give it a chance to adjust the device capacity.
+ *
+ *     CONTEXT:
+ *     Defined by block layer.  Might sleep.
+ */
+static void sd_unlock_native_capacity(struct gendisk *disk)
+{
+       struct scsi_device *sdev = scsi_disk(disk)->device;
+
+       if (sdev->host->hostt->unlock_native_capacity)
+               sdev->host->hostt->unlock_native_capacity(sdev);
+}
+
 /**
  *     sd_format_disk_name - format disk name
  *     @prefix: name prefix - ie. "sd" for SCSI disks