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-rw-r--r--drivers/usb/storage/scsiglue.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index af294bb..d34dc9f 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