Re: Large writes issue with Sierra Wireless modem
Alan Stern <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
On Tue, 5 Jun 2007, James Graves wrote: > Hello all, > > We're seeing a strange problem when writing commands to a Sierra > Wireless USB modem. It is a USB 1.1 device. > > We're sending some commands over the control channel for the modem. > Almost everything works fine. > > However, when sending commands larger than 64 bytes, the rest of the > data (which was a part of that write) is corrupted, which we've seen > using a USB sniffer. ... > I'm in the process of adding some more debug to the Sierra Wireless > driver to just dump the data going over that particular bulk endpoint. > > I'll also be trying to figure out what (if any) differences there are > between the bulk endpoints from the kernel's point of view. > > However, if anyone has some suggestions on where else to look, I'd > certainly appreciate it. What does usbmon show? (See Documentation/usb/usbmon.txt.) Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel