On Tue, 2007-10-09 at 11:40 -0400, Alan Stern wrote: > On Tue, 9 Oct 2007, Patrik Johansson wrote: > > > Hi, > > > > I have a board with a BF531 and a ISP1362. I'm getting timouts when > > doing device enumeration on certail devices. Most devices work fine, but > > I have a couple who times out when asking for string descriptors, and > > now one device that times out on SET_ADDRESS. I was able to get the > > devices that times out on string descriptors to work by disabling some > > code in drivers/usb/core/hub.c > > > > I welcome any ideas and pointers towards fixing this issue. What > > information can I provide to help solve this? > > > > Btw, the device works perfectly on my desktop computer. > > > > One weird "coincidence" is that all the devices where asking for string > > descriptors results in timeouts are devices using the MTP protocol (some > > of the support normal USB-storage as well). The device that times out > > on SET_ADDRESS is a Muvid MP-521. > > If you can build kernels with CONFIG_USB_DEBUG set on both the board > and the desktop computer, then there might be some useful information > in the dmesg logs of the two machines. It would at least be > interesting to compare them. > > Alan Stern >
At the moment I don't have access to the machines in question (it's a clients hardware). But I did get some logs with some of the debugging in isp1362-hcd.c set. I have two logs, one for a working device and one for a non-working. I can't seem to be able to attach them (I tried earlier but the mail just bounced saying it was filtered out). http://www.hallonsaft.com/cowon.txt.gz is a log from a Cowon D2, a working device. http://www.hallonsaft.com/muvid.txt.gz is a log from the Muvid MP-521. >From what i can tell from the logs, there's supposed to be an interrupt where there is a khubd error "usb 1-2: khubd timed out on ep0out len=0/0". That's the confusing bit, it works fine with so many other devices. I tried increasing the timeout (it was 5 seconds) to 50, but still no interrupt. I'll try getting the logs you asked for from the client as soon as possible. /Patrik Johansson ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
