> Since none of the earlier patches worked, try this one. I expect it
> will get farther than the others did, even if it doesn't work totally.
>
> Even on your working system, the dmesg lines that say:
>
> usb.c: error getting string descriptor 0 (error=-75)
>
> indicate that the mouse doesn't work perfectly.
>
> Alan Stern
>
>
> ===== message.c 1.67 vs edited =====
> --- 1.67/drivers/usb/core/message.c Fri Jan 30 22:02:33 2004
> +++ edited/drivers/usb/core/message.c Mon Feb 16 16:57:01 2004
> @@ -1184,7 +1184,7 @@
> int usb_string(struct usb_device *dev, int index, char *buf, size_t
> size) {
> unsigned char *tbuf;
> - int err, len;
> + int err;
> unsigned int u, idx;
>
> if (size <= 0 || !buf || !index)
> @@ -1196,7 +1196,7 @@
>
> /* get langid for strings if it's not yet known */
> if (!dev->have_langid) {
> - err = usb_get_string(dev, 0, 0, tbuf, 4);
> + err = usb_get_string(dev, 0, 0, tbuf, dev->epmaxpacketin[0]);
> if (err < 0) {
> err("error getting string descriptor 0 (error=%d)", err);
> goto errout;
> @@ -1212,17 +1212,9 @@
> dev->devnum, dev->string_langid);
> }
> }
> -
> - /*
> - * ask for the length of the string
> - */
> -
> - err = usb_get_string(dev, dev->string_langid, index, tbuf, 2);
> - if(err<2)
> - goto errout;
> - len=tbuf[0];
>
> - err = usb_get_string(dev, dev->string_langid, index, tbuf, len); + err
> = usb_get_string(dev, dev->string_langid, index, tbuf,
> + sizeof(tbuf));
> if (err < 0)
> goto errout;
>
http://virtual.shia.ws:8000/~informatica/otros/dmesg-patch4.txt
it does not work, this message must have some relation with the problem
usb 3-2: control timeout on ep0out
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