On Fri, Jun 11, 2010 at 5:35 PM, David Brownell <david-b@xxxxxxxxxxx> wrote: > > > > > Yeah, the rules for use of that > > flag "evolved", > > > but nobody patched that driver. > > > > The rule never changed, the bug trapping got better. > > So At least, the de-facto rule changed. Such > changes can be argued as bug fixes (and most > developers have been in that situation), but > in any case they remain changes. :) > > Then for some reason > > the patches keeps getting ignored > > I don't recall seeing a patch submitted which updates > that driver to stop using the low_latency flag. > Please see the thread at [1]. [1] http://kerneltrap.org/mailarchive/linux-usb/2010/4/6/6259986 There were two approches discussed. (1) Setting tty->low_latency = 0 in u_serial.c (2) Using the patch at [2] which uses a workqueue instead of tasklet in u_serial.c [2] http://marc.info/?l=linux-usb&m=126405382220848&w=2 Both of these approches solved the problem for me. I am not an expert on this and would like your opinion on which one is better. Regards, Maulik -- 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
