Am Dienstag, 19. Januar 2010 15:21:24 schrieb Alan Cox: > > > > If the FIFO is full we can do nothing. Please try the attached patch. > > > > > > If the FIFO is full how are we getting called - we should have throttled > > > earlier if there is any flow control (including 'look no URBs' cases) ? > > > > The log shows no call to usb_serial_generic_write_room() > > Do you consider this a bug in the tty layer? > > Some of the line disciplines just throw data at the board but not n_tty > (the normal one) - so for PPP you wouldn't see checks on room but the > loader I assume is using the normal tty layer - if so something is up > because the ldisc shouldn't have written more than there is room for. I don't know which line discipline is used. Matthew? But anyway, if this can happen buglessly, the generic function must handle it. Regards Oliver -- 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
