On Mon, 27 Jul 2009, Ferenc Wagner wrote: > > Are you certain this really is a regression? Under 2.6.30 and 2.6.27 > > the same thing happened if I unplugged a USB serial device while it was > > in use. > > My original report is about unplugging the USB servial device *after* > using it. > > > Can you check whether the device is still being used when you unplug > > it? For instance, is there still a pppd process trying to communicate > > with the device? > > I checked and rechecked that the pppd process is already dead by the > time I unplug the device. However, the minor number did not increase > if I unplugged the device without using it beforehand, as expected. > > > In short, it seems likely that this is not new behavior but rather the > > way usb-serial has worked all along. > > I didn't experience this problem with 2.6.30: my ppp script was > hardwired to use ttyUSB0 and it always worked. Now with 2.6.31-rc3 it > does not, as the device node keeps changing. > > I'll test this with opening ttyUSB directly from the shell, instead of > via pppd, and report back whether it makes a difference. Another thing to check is whether this patch (not yet merged) fixes it: http://marc.info/?l=linux-usb&m=124825571403844&w=2 Alan Stern -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
