On Fri, Jan 25, 2013 at 11:30 AM, Viresh Kumar <viresh.ku...@linaro.org> wrote: > On Fri, Jan 25, 2013 at 2:49 PM, Andy Shevchenko > <andy.shevche...@gmail.com> wrote: >> On Fri, Jan 25, 2013 at 11:07 AM, Viresh Kumar <viresh.ku...@linaro.org> >> wrote: >>> Who is going to right on ctlhi/lo? > > Ahh, my English :( (/s/right/write) > >> dwc_do_single_block() >> >>> we write to ctlhi/lo only when we program new >>> transfer. and that is not going to happen while we are in middle of a >>> transfer. >> >> We have got a tasklet running inside tx_status call. Isn't possible? >> tasklet runs scan_descriptors, that continues transfer in soft LLP mode. > > But we have just executed scan_descriptor() before this function and it > doesn't > look possible that transfer wasn't over then and inbetween these calls we got > an > interrupt, scheduled an tasklet and called dwc_do_single_block() :)
Yeah, the keyword is "look". 1 per million cases it could be true. I think this discussion is going to the dead end. Anyone else would like to argue for one or the other opinion? I might obey your way with the commentary that with quite lower possibility we could have an issue there. -- With Best Regards, Andy Shevchenko -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/