On Wed, 2010-04-21 at 09:52 -0400, Mark Lord wrote: > On 21/04/10 08:47 AM, Luben Tuikov wrote: > >>>> starts at line 8816. (It says the > >> command > >>>> is a BLANK command, but it's incorrectly > >> identified that command.) > > > > Application clients should send ATA PASS-THROUGH (16) and never the > 12 byte version to ATAPI devices behind a SAT bridge, whose opcode is > interpreted as BLANK (as pointed out by Doug), and BLANK executed. > .. > That's a nice self-proclamation. > Got a pointer to a SAT or ATA/SATA standard that says it for real? I'm afraid it's just part of the usual standards confusion. I think what they were thinking is that no-one would use SATL with ATAPI ... although I bet someone will ... > The problem with that statement (above), becomes.. what to use > for the initial IDENTIFY request, before the type of device is known? But this isn't a userspace problem. By the time we present the device to userspace, we already know what it is ... so you can go by device type and only use ATA_12 for disk devices. For kernel space, we never use the encapsulation commands anyway, we always go by the transport. James -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
