On Thu, Jun 4, 2009 at 00:24, Robin Getzwrote: > On Wed 3 Jun 2009 18:39, Mike Frysinger pondered: >> On Wed, Jun 3, 2009 at 10:04, Alan Stern wrote: >> > On Wed, 3 Jun 2009, Mike Frysinger wrote: >> >> From: Bryan Wu <cooloney@xxxxxxxxxx> >> >> Some USB stick does not answer PING correctly which will make USB >> >> enumeration fail. We enable the NAK limit value to detect this PING >> >> issue, then disable the PING option for such ill-behaviored usb sticks. >> > >> > Do these ill-behaved sticks work with a regular EHCI controller? If >> > not then there's no reason to add special code to support them on MUSB. >> > If they do work then MUSB should behave the same way as EHCI, which >> > doesn't use the NAK limit value or disable PING. >> >> we'll try and document examples of crappy sticks and check on a >> regular EHCI controller > > Yeah, they worked on my ICH7 just fine with an old 2.6.18 kernel on it. That > is how we determined what we were suppost to be doing. > > I can dig up the USB logs (LeRoy) from some old emails if you want the > mailbombs... we've published said logs here: https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:drivers:musb#usb_stick_w_no_ping -mike -- 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
