[SCSI] SPI transport class: misc DV fixes

Key more of the domain validation settings off the inquiry data from
the disk (in particular, don't try IU or DT unless the disk claims to
support them.

Also add a new dv_in_progress flag to prevent recursive DV.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/scsi/scsi_transport_spi.h b/include/scsi/scsi_transport_spi.h
index 302680c0c0de..da180f738477 100644
--- a/include/scsi/scsi_transport_spi.h
+++ b/include/scsi/scsi_transport_spi.h
@@ -53,7 +53,8 @@ struct spi_transport_attrs {
         unsigned int support_ius; /* support Information Units */
         unsigned int support_qas; /* supports quick arbitration and selection */
         /* Private Fields */
-        unsigned int dv_pending:1; /* Internal flag */
+        unsigned int dv_pending:1; /* Internal flag: DV Requested */
+        unsigned int dv_in_progress:1;  /* Internal: DV started */
         struct mutex dv_mutex; /* semaphore to serialise dv */
 };