1 files changed, 25 insertions, 8 deletions

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index b8f0cab57813..8160c00d1092 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -133,12 +133,10 @@ struct async_scan_data {
 /**
  * scsi_complete_async_scans - Wait for asynchronous scans to complete
  *
- * Asynchronous scans add themselves to the scanning_hosts list.  Once
- * that list is empty, we know that the scans are complete.  Rather than
- * waking up periodically to check the state of the list, we pretend to be
- * a scanning task by adding ourselves at the end of the list and going to
- * sleep.  When the task before us wakes us up, we take ourselves off the
- * list and return.
+ * When this function returns, any host which started scanning before
+ * this function was called will have finished its scan.  Hosts which
+ * started scanning after this function was called may or may not have
+ * finished.
  */
 int scsi_complete_async_scans(void)
 {
@@ -171,6 +169,11 @@ int scsi_complete_async_scans(void)
 
         spin_lock(&async_scan_lock);
         list_del(&data->list);
+        if (!list_empty(&scanning_hosts)) {
+                struct async_scan_data *next = list_entry(scanning_hosts.next,
+                                struct async_scan_data, list);
+                complete(&next->prev_finished);
+        }
  done:
         spin_unlock(&async_scan_lock);
 
@@ -739,6 +742,14 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
                 sdev->no_uld_attach = 1;
 
         switch (sdev->type = (inq_result[0] & 0x1f)) {
+        case TYPE_RBC:
+                /* RBC devices can return SCSI-3 compliance and yet
+                 * still not support REPORT LUNS, so make them act as
+                 * BLIST_NOREPORTLUN unless BLIST_REPORTLUN2 is
+                 * specifically set */
+                if ((*bflags & BLIST_REPORTLUN2) == 0)
+                        *bflags |= BLIST_NOREPORTLUN;
+                /* fall through */
         case TYPE_TAPE:
         case TYPE_DISK:
         case TYPE_PRINTER:
@@ -749,11 +760,17 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
         case TYPE_ENCLOSURE:
         case TYPE_COMM:
         case TYPE_RAID:
-        case TYPE_RBC:
                 sdev->writeable = 1;
                 break;
-        case TYPE_WORM:
         case TYPE_ROM:
+                /* MMC devices can return SCSI-3 compliance and yet
+                 * still not support REPORT LUNS, so make them act as
+                 * BLIST_NOREPORTLUN unless BLIST_REPORTLUN2 is
+                 * specifically set */
+                if ((*bflags & BLIST_REPORTLUN2) == 0)
+                        *bflags |= BLIST_NOREPORTLUN;
+                /* fall through */
+        case TYPE_WORM:
                 sdev->writeable = 0;
                 break;
         default: