On Tue, 19 Jan 2010 14:57:00 +0100 Oliver Neukum <oliver@xxxxxxxxxx> wrote: > Am Dienstag, 19. Januar 2010 14:29:34 schrieb Alan Cox: > > On Tue, 19 Jan 2010 14:20:29 +0100 > > Oliver Neukum <oliver@xxxxxxxxxx> wrote: > > > > > Am Montag, 18. Januar 2010 21:14:16 schrieb Matthew Garrett: > > > > > > > drivers/usb/serial/generic.c: usb_serial_generic_write - port 0, 1565 > > > > bytes > > > > drivers/usb/serial/generic.c: usb_serial_generic_write - put 0 bytes > > > > into fifo > > > > drivers/usb/serial/generic.c: usb_serial_generic_read_bulk_callback - > > > > port 0 > > > > > > 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. -- 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
