Re: USB Driver help needed
Ron Gage <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Alan: Alan Stern wrote: > On Tue, 24 Jul 2007, Ron Gage wrote: > > >> This is a good one to start with as it is seen literally hundreds of >> times in the trace. >> >> 20 in down n/a 3.195 VENDOR_ENDPOINT - >> URB Header (length: 80) >> SequenceNumber: 20 >> Function: 0019 (VENDOR_ENDPOINT) >> PipeHandle: 00000000 >> >> SetupPacket: >> 0000: 00 81 82 00 00 00 00 00 >> bmRequestType: 00 >> DIR: Host-To-Device >> TYPE: Standard >> RECIPIENT: Device >> bRequest: 81 >> unknown! >> >> >> No TransferBuffer >> >> >> If I had to guess, this packet is acting something like a "get next" >> type of function. I can make the entire SnoopyPro dump file available >> if that would help. >> > > Don't you remember what I told you a few days ago? The setup packet > contents in the "down" report are unreliable. You need to look at an > "up" report. > > Alan Stern > > I remember it quite clearly. You told me to look at the "UP" packets which I did. I then responded about how those "UP" packets looked like responses from the device to the host (a clear example: the response to the Get_Descriptor_From_Device request is in an UP packet. In fact, by looking over the entire capture session of 2,324 packets, I am seeing 9 packets so far that are UP packets and appear to be from host to device. All 9 of these UP packets are at the beginning of the capture. In fact, after sequence #19, there are no UP packets that appear to originate from the host at all - but there are hundreds of down packets that appear to. As I said before, I'm getting confused. Ron ------------------------------------------------------------------------- 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/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel