diff options
| author | Paul Walmsley <paul@booyaka.com> | 2005-12-21 14:28:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-12-21 14:46:34 -0800 |
| commit | 28120be5d6830cd7c7777d8bf570bdb20abef58a (patch) | |
| tree | a7aecedc557ae1c5ae4b4d7fa21a1eed879c842e | |
| parent | 23f9b317e0ba4fbc5fc9524275d0105fa87e2027 (diff) | |
[PATCH] USB Storage: Force starget->scsi_level in usb-storage scsiglue.c
When the usb-storage module forces sdev->scsi_level to SCSI_2, it should
also force starget->scsi_level to the same value. Otherwise, the SCSI
layer may attempt to issue SCSI-3 commands to the device, such as REPORT
LUNS, which it cannot handle. This can prevent the device from working
with Linux.
The AMS Venus DS3 DS2316SU2S SATA-to-SATA+USB enclosure, based on the
Oxford Semiconductor OXU921S chip, requires this patch to function
correctly on Linux. The enclosure reports a SCSI-3 SPC-2 command set
level, but does not correctly handle the REPORT LUNS SCSI command -
probably due to a bug in its firmware.
It seems likely that other USB storage enclosures with similar bugs will
also benefit from this patch.
Tony Lindgren <tony@atomide.com> collaborated in the development of this
patch.
Signed-off-by: Paul Walmsley <paul@booyaka.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 4837524eada7..4ef5527028c5 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -109,7 +109,7 @@ static int slave_configure(struct scsi_device *sdev) * data comes from. */ if (sdev->scsi_level < SCSI_2) - sdev->scsi_level = SCSI_2; + sdev->scsi_level = sdev->sdev_target->scsi_level = SCSI_2; /* According to the technical support people at Genesys Logic, * devices using their chips have problems transferring more than @@ -162,7 +162,7 @@ static int slave_configure(struct scsi_device *sdev) * 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; + sdev->scsi_level = sdev->sdev_target->scsi_level = SCSI_2; /* USB-IDE bridges tend to report SK = 0x04 (Non-recoverable * Hardware Error) when any low-level error occurs, |