On Thu, 2008-01-17 at 10:53 +0000, Bill Adair wrote: > On Mon, 2008-01-14 at 19:31 +0100, Stefan Richter wrote: > > Bill Adair wrote: > > > Is there any way under Linux of forcing use of the sd driver for a > > > device on the bus instead of sg? > > > > The INQUIRY data which the SCSI core gets from the device have to > > indicate that the device implements SBC or RBC (is of peripheral device > > type 00h or 0Eh). > I have altered the sd.c file by patching sd_probe to check for the > particular unit I have and accepting pdt 03h (Processor) as a valid > return and the unit works fine. That's a bit of a nasty. We can't blindly attach sd to a processor otherwise it will pick up all sorts of stuff its not supposed to bind to (like scanners, enclosure devices and other initiators). I suppose a firmware upgrade for the device to make it actually comply vaguely with the spec is out of the question? If not, there's a trick we do in scsi_scan.c for Toshiba CDROMS that fail to set their type correctly (it's the code under BLIST_ISROM), we could do the same for this device. What are its inquiry strings? And does anyone have any clue whether it should be RBC or DISK type? > I suspect the sd file is considered very important though (and I don't > know how many of these card readers exist) so I assume a patch is not > required ;-). Would there be another approach to creating a "driver" for > my Spyrus RD300 in it's guise as a card reader? James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
