1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index af294bb68c35..d34dc9f417f0 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -156,6 +156,14 @@ static int slave_configure(struct scsi_device *sdev)
                 if (us->flags & US_FL_FIX_CAPACITY)
                         sdev->fix_capacity = 1;
 
+                /* Some devices report a SCSI revision level above 2 but are
+                 * unable to handle the REPORT LUNS command (for which
+                 * support is mandatory at level 3).  Since we already have
+                 * a Get-Max-LUN request, we won't lose much by setting the
+                 * revision level down to 2.  The only devices that would be
+                 * affected are those with sparse LUNs. */
+                sdev->scsi_level = SCSI_2;
+
                 /* USB-IDE bridges tend to report SK = 0x04 (Non-recoverable
                  * Hardware Error) when any low-level error occurs,
                  * recoverable or not.  Setting this flag tells the SCSI