On Mon, 2003-09-22 at 12:41, Linus Torvalds wrote: > Ok, thanks. In particular, it seems to be pointless to read anything past > byte 20 - nothing past there is even defined. > > What's the general sense of things - for a random SCSI device with bugs > (and they all have _some_ sort of bugs, let's not just rain on USB here), > is it saner to try to read just the bytes we need (3 bytes: page code, > page size and the cache bits), or the full 20 bytes?
Generally, we used to do that...we did run across devices (I won't say which) which tried to send more...i.e. there was a minimum size they wouldn't transfer below. By and large, I think it was the headers of translated commands, though, so as long as we ask for the header + minimum we need, we should be safe. I think we could try 4 bytes for this (even to avoid wide residue problems) and see how it goes. James ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
