[PATCH] USB Storage: wedge SCSI revision at 2 for usb-storage devices This patch started life as as479b, and has been rediffed. Please note the order of submission of this latest patch series -- even tho this has an older original number, it is the last patch I'll be sending today.
This patch changes the reported SCSI revision level to 2 for all disk-type devices. This is needed in a few cases because the device reports a level of 3 or higher but then crashes when given a REPORT LUNS command (for which support is supposed to be mandatory at those levels). This shouldn't harm us, since it only matters for sparse LUNs and we have separate ways of coping with that. Signed-off-by: Alan Stern <[EMAIL PROTECTED]> Signed-off-by: Matthew Dharm <[EMAIL PROTECTED]> Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]> --- commit a4e628328ec60873fec9d506d682155391f589ce tree 84d19df1b2730435254d7b005ca80fd715ba567c parent 34008dbfe8c00eca67f97bad484eb5cb03bafe66 author Matthew Dharm <[EMAIL PROTECTED]> Thu, 28 Jul 2005 14:50:29 -0700 committer Greg Kroah-Hartman <[EMAIL PROTECTED]> Thu, 08 Sep 2005 16:22:55 -0700 drivers/usb/storage/scsiglue.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -156,6 +156,14 @@ static int slave_configure(struct scsi_d 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 ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel