On Tue, Oct 20, 2009 at 4:00 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Tue, 20 Oct 2009, Mike Kershaw wrote: > >> On Tue, Oct 20, 2009 at 07:30:25AM -0700, Greg KH wrote: >> > On Tue, Oct 20, 2009 at 09:50:13AM -0400, Mike Kershaw wrote: >> > > Spotted what is (to me) a regression under 2.6.31 (showed up in .0, >> > > still present in .4) >> > >> > Wait for 2.6.31.5, it should all be fixed there. >> > >> > It would be great if you could test out 2.6.31.5-rc1 to verify this >> > before I cut the release if at all possible. >> > >> >> Unfortunately, no joy - same symptoms. > > Comparison of the 2.6.30 and 2.6.31 versions shows several changes > related to flow control. Most notable are the changes in ftdi_open() > and ftdi_close(), together with the addition of a whole new > ftdi_dtr_rts() routine. > > Probably one of these is responsible for the behavior you're seeing. I'm caught in this regression too, still broken in 2.6.31.5. I believe the hardware I'm using won't work without DTR/RTS turned on. So I suspect they aren't turned on by default anymore. I tried using picocom to force them on and I still couldn't get my hardware to respond. Chip is a FT232RL. I'm still poking around trying to figure out how to make it work again. > > 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 > -- Jon Smirl jonsmirl@xxxxxxxxx -- 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
