From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Date: Sat, 21 Feb 2004 00:39:30 +0000 Subject: Re: Understanding udevinfo Message-Id: <20040221003929.GD18146@kroah.com> List-Id: References: <20040220103858.2f41d3ab@rad1.109bean.org.uk> In-Reply-To: <20040220103858.2f41d3ab@rad1.109bean.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org On Fri, Feb 20, 2004 at 10:38:58AM +0000, Richard A Downing FBCS wrote: > I'm trying to get my usbs to work via udev. And I'm finding it very hard to > understand udevinfo's -p option. For instance: In my /sys filesystem I have a > directory /sys/bus/usb/devices/1-2. I have it in > /etc/udev/udev.rules as: > > # The ov511 webcam > BUS="usb", PLACE="1-2", NAME="webcam%n" > > and sure enough, in /udev I find a webcam0 with the correct major/minor. > > If I type: 'udevinfo -p /sys/bus/usb/devices/1-2 -a' in an attempt to find out > what else I could put in udev.rules, all I get is: > > # udevinfo -p /sys/bus/usb/devices/1-2 -a > couldn't get the class device You need to use the /sys/class or /sys/block directory for udevinfo to be able to give you anything that will work properly. So for your example, try: udevinfo -p /sys/class/v4l/video0 -a or whatever the class directory for your device is at. Hope this helps, greg k-h ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id56&alloc_id438&op=click _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel