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authorSteven Whitehouse <swhiteho@redhat.com>2006-09-28 08:29:59 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2006-09-28 08:29:59 -0400
commit185a257f2f73bcd89050ad02da5bedbc28fc43fa (patch)
tree5e32586114534ed3f2165614cba3d578f5d87307 /drivers/usb/storage/scsiglue.c
parent3f1a9aaeffd8d1cbc5ab9776c45cbd66af1c9699 (diff)
parenta77c64c1a641950626181b4857abb701d8f38ccc (diff)
downloadop-kernel-dev-185a257f2f73bcd89050ad02da5bedbc28fc43fa.zip
op-kernel-dev-185a257f2f73bcd89050ad02da5bedbc28fc43fa.tar.gz
Merge branch 'master' into gfs2
Diffstat (limited to 'drivers/usb/storage/scsiglue.c')
-rw-r--r--drivers/usb/storage/scsiglue.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index a4b7df9..e1072d5 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;
}
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