On Sun, 14 Nov 2010, Pete Zaitcev wrote: > On Mon, 15 Nov 2010 06:48:40 +0100 > Németh Márton <nm127@xxxxxxxxxxx> wrote: > > > ev_type == 'S' && usb_urb_dir_out(urb) ---> data is available, we'll need it > > The write submission case should be covered by the transfer_buffer_length, > I think. Is there a driver that only sets the ISO descriptors but not > the overall length? If there is, it's a bug. usb_submit_urb() could check for that sort of thing -- although so far nobody has complained of problems, so checking doesn't seem necessary. Other things usb_submit_urb() could check for, but currently doesn't, include: Make sure the packet offsets are non-decreasing; Make sure the packet don't overlap in the buffer; Make sure the spacing between two consecutive packets in the buffer doesn't exceed some upper limit (needed by ehci-hcd). Alan Stern -- 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
