On Sun, 2003-06-22 at 16:06, Matthew Dharm wrote: > The problem as I see it is ATAPI devices. That means that sbp2, ide-scsi, > and usb-storage (all of which bridge ATAPI devices to the SCSI layer) will > be affected. These devices don't include the DBD bit in their command > specification -- the bit is reserved.
That's SFF-8020i? The bit is listed as reserved, *but* the implementation defined behaves as if DBD were specified. The BD header component of the mode sense header is specifically listed as "reserved" and the spec doesn't allow for block descriptors to be returned. The current code for ATAPI CD-ROMS must just be lucky because the reserved fields are zero filled. the SFF-8020i says that the recipient "shall not check" reserved fields, so the standard makes it sound like we can get away with the correct behaviour in all cases by setting DBD. Have you actually heard of setting DBD causing a failure on ATAPI devices? James ------------------------------------------------------- This SF.Net email is sponsored by: INetU Attention Web Developers & Consultants: Become An INetU Hosting Partner. Refer Dedicated Servers. We Manage Them. You Get 10% Monthly Commission! INetU Dedicated Managed Hosting http://www.inetu.net/partner/index.php _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
