On Thu, 8 Jan 2004, David Brownell wrote: Hi, I have an update on this regarding 2.6.3-rc1 kernel. I have two cables. With the original cable which I used to report this problem I still get the reset problem.
Later I bought Gembird cable which seemd to be undetected but now it get's detected as same Prolific PL-2301/PL-2302 and doesn't show the reset problem. However, both log on machines: usb0: rxqlen 0 --> 4 NETDEV WATCHDOG: usb0: transmit timed out usb0: tx err -104 Is that of an interrest to anyone. Martin > Martin MOKREJ? wrote: > > Hi, > > I found this patch causes troubles on 2.4.25-pre4 and also 2.4.24-rc2. > > Here is the resolved stack trace in "cr.res" file. :( > > > > Some details. The usb0 had assigned an IP address and was up(not sure if > > that matters). In "dmesg" I saw several times: > > usb0: rxqlen 0 --> 1 > > NETDEV WATCHDOG: usb0: transmit timed out > > usbnet.c: usb0 tx: err -2 > > Then likely your PL-230x based cable really can't work without that > reset. Prolific seems to have designed them to require some sort > of handshaking with the host on the other end, but they did a poor > job of documenting those requirements. (And it's not clear why any > handshaking should be required either.) > > > > I unplugged the usb cable and that triggered kernel panic. > > This bug manifests only with the patch applied. :( > > Hmm, that's odd. But your stack trace was nonsense. Does > a 2.6 kernel do the same thing? 2.6 should at least make it > easier to report a sensible stack trace. I can't think of > any reason such a change should trigger an oops in current > kernels. > > > >> BTW: > >> I tried to use GEMBIRD USB-USB cable (UAU211), but it's not detected > >> at all, possibly it has unsupported chipset. Any clue on that? > > No, but it's quite possible it'd work if you just set it up > to work like, say, the Belkin parts work ... especially if > it's only got a pair of bulk endpoints. (Which is all such > hardware really needs.) > > - Dave > > -- Martin Mokrejs <[EMAIL PROTECTED]> PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
