Hi, On Wed, Jun 09, 2004 at 04:48:51PM +0100, Tom Schutzer-Weissmann wrote: > I had problems using the Epkowa libraries (libsane-epkowa) and the > iscan frontend with my usb scanner in kernel 2.6. > The scanner was closed after each operation. Once closed, nothing > could be read from it, and I got lots of BULK TIMEOUTs, although > there were no errors when the device was reopened. > > By modifying the code so that usb_reset() was always called before > usb_release_interface() and usb_close(), I solved the problem.
Doesn't usb_reset() cause a renumeration and therefore the device gets a new device file? I guess this isn't the default for closing USB devices. Maybe the usb_reset just hides a bug in the SANE backend, libusb or the kernel. Bye, Henning
