Hi, Could you please describe how to use the HAL (Hardware Abstraction Layer)? Is the HAL built in in the 2.6.16.16 kernel and how do I reach it? Thanks. / Moge > On Thu, Jul 06, 2006 at 04:54:47PM +0200, mgr@xxxxxxxxxxx wrote: >> Hi, >> >> I want to write a function that detects what USB devices are connected >> to >> the bus. How can you do that efficiently? Can you scan the PCI bus in >> some >> way? > > From within the kernel, or from userspace? > > Why do you want to detect all USB devices? > > And why would scanning PCI devices show you USB ones? > >> Or what do you think of the idea of using poll() and detecting changes >> in >> the /proc/bus/usb/devices function? > > That's how some programs do it, but what about the distros that don't > mount usbfs in /proc/bus/usb/ anymore? > > Hint, use HAL for this... > > 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/ > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
