X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fusb%2Fstorage%2Fscsiglue.c;h=e1072d52d6419a93b7b9135dd05cf5a09cb9b913;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=a4b7df9ff8c165fd3067f7c8e8ff5ead4becf2a4;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git

diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index a4b7df9ff..e1072d52d 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -72,12 +72,27 @@ static const char* host_info(struct Scsi_Host *host)
 
 static int slave_alloc (struct scsi_device *sdev)
 {
+	struct us_data *us = host_to_us(sdev->host);
+
 	/*
 	 * Set the INQUIRY transfer length to 36.  We don't use any of
 	 * the extra data and many devices choke if asked for more or
 	 * less than 36 bytes.
 	 */
 	sdev->inquiry_len = 36;
+
+	/*
+	 * The UFI spec treates the Peripheral Qualifier bits in an
+	 * INQUIRY result as reserved and requires devices to set them
+	 * to 0.  However the SCSI spec requires these bits to be set
+	 * to 3 to indicate when a LUN is not present.
+	 *
+	 * Let the scanning code know if this target merely sets
+	 * Peripheral Device Type to 0x1f to indicate no LUN.
+	 */
+	if (us->subclass == US_SC_UFI)
+		sdev->sdev_target->pdt_1f_for_no_lun = 1;
+
 	return 0;
 }