Alan Stern wrote: > On Mon, 7 Nov 2005, thomas schorpp wrote: > > >>>I don't think blacklisting is a good way to do this. In principle any USB >>>mass storage device -- any SCSI device, in fact -- might have a >>>vendor-specific pass-thru needing special handling. >> >>no. that would be not industry best practice and uneconomical sw effort. > > > Adding vendor-specific codes to SCSI devices isn't industry best practice? > I can't argue with that, but it is very common nevertheless. not for all the cheap noname consumer stuff around. maybe in your scsi-320 server world i cant afford. > > Is it an uneconomical software effort? Ridiculous -- it's not software at > all, it's part of the firmware. i thought were speaking of OS drivers here? > > >>remember this devices are mainly "designed for windows" and WHQL certification >>is expensive for every single driver. and ms has only one driver for all usb storage >>right now, all boxes and sticks i had here use it. > > > I think you have a very limited view of how devices are "designed". > Besides, I specifically said I was talking about _all_ SCSI devices, not > just USB ones. > yes, for the second sentence, this is made clear now. > >>> It doesn't have to be >>>correlated with the vendor, the product, the SCSI level, the transport, or >>>anything else. >> >>yes. the sheet for design recommended cypress chips state all ATACB and ATA-Security. >>i would be make no sense to implement different behaviuors in chips for the same purpose. > > > That's what Cypress does, sure. But who says that other vendors have to > copy Cypress? For the most part they don't. Neither does T10. they dont copy cypress, they want to reduce costs, processes and resulting "standards" should be compatible, therefore. > > As for whether it makes no sense -- you have your point of view. Business > people have a very different point of view; to them it might make > excellent sense, to help secure a competitive advantage. :D i'm no business man. i am a generalist and i just want to lock my external hdd. > > Alan Stern > > - tom schorpp - : 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
