On Sun, 25 Apr 2004, Jan Capek wrote:
Speaking of 2.4 or 2.6 kernel? I saw this issue in my 2.6 kernel using this driver. It doesn't seem to have any impact. Any input from anyone who is working on the relevant part of the USB layer?
That sort of thing is normal under some circumstances with 2.6. When a device is disconnected or a driver is unloaded, all its URBs are automatically unlinked by the USB core before the disconnect() routine is run. Hence the driver's own calls to usb_unlink_urb() get errors.
This doesn't happen when the device file is closed, if the driver remains bound to the device. So if these errors occur every time you close the port, then most likely something is wrong.
Alan Stern
The patch I sent to correct a problem when an application cleared the HUPCL flag on the termios structure, also added the error message when usb_unlink_urb returned an error code.
The logic of the code didn't change, except that it now reports something that it previously silently discarded.
I can dig deeper into the driver to find out what's wrong, but I'll have to learn more about the usb core logic, before I can produce something usefull.
-- Paulo Marques - www.grupopie.com "In a world without walls and fences who needs windows and gates?"
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