On Tue, Jan 30, 2007 at 04:28:05PM +0000, john oliver wrote: > Hi, > > To save you reading all of this, my questions boil down to > > 1) why might my EdgePort 1 port usb-serial adaptor register both 1 & 2 port > devices. It's not the adaptor, but the driver that supports both. > 2) are there significant changes between kernel versions 2.4.30 and > 2.6.15in this respect, where the earlier driver detects the 2 port > only, and the > latter the 1 port. Probably, there are a _lot_ of changes between those two kernel versions. > details .. > > I'm working with a mips based embedded board, running 2.4.31, and an Intel > Host running 2.6.15. My Edge Port 1 USB to serial adaptor behaves > differently on each. > > PC > ======== > When I connect the USB end to my PC, dmesg shows > > drivers/usb/serial/usb-serial.c: USB Serial support registered for Edgeport > TI 1 port adapter > drivers/usb/serial/usb-serial.c: USB Serial support registered for Edgeport > TI 2 port adapter > [..] > io_ti 4-2:1.0: Edgeport TI 1 port adapter converter detected Yes, see the _driver_ says it supports both types of devices, yet only the 1 port device was found. So, is the device not working properly? > The io_ti is built as a module for the PC > > > mips board > =========== > I do not built it as a kernel module on this board, because I get errors > (unresolved symbols tty_disc_ref and tty_ldisc_deref, think I need to update > my busybox modutils), so I build them in. That might be the problem right there, try fixing that first. > When I connect the USB end to the board and look at dmesg I find > > drivers/usb/serial/usb-serial.c: USB Serial support registered for Edgeport > TI 1 port adapter > drivers/usb/serial/usb-serial.c: USB Serial support registered for Edgeport > TI 2 port adapter > > but the 2 port adaptor has detected this time. I don't see that in the logs. Please show the full log messages. Is this a little or big endian MIPS machine? thanks, greg k-h -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
