From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Date: Mon, 22 Dec 2003 20:42:11 +0000 Subject: Re: [HACK] Give hiddev a device link in sysfs Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org On Mon, Dec 15, 2003 at 07:32:35PM -0500, Adam Kropelin wrote: > I have a bunch of USB interface UPSes which are managed via the hiddev > interface. Recently I've been working on setting up a dedicated server > to manage them all. I'd like to use udev to manage the device nodes so > that I can have consistent naming no matter what USB port a particular > UPS happens to be plugged into. They have unique serial numbers, so a > udev.rules LABEL entry seemed the appropriate thing to do. > > It didn't work. Eventually I tracked it to a bad device link in sysfs > (/sys/class/usb/hiddevN/device). Further investigation showed that the > broken link is due to hiddev's being not-quite-a-usb-device and having a > zero kobj with no parent, etc. > > I cooked up the hack-job patch below and it seems to be working. Clearly > this isn't the right solution, but it's a starting point and it solves > my immediate need. Yeah, hiddev is wierd. It needs to dynamically allocate that interface structure, and then a patch like this will start to make sense. Right now bad things can happen if you unload the hiddev module when you have a file in sysfs open for that device. But this patch is a start. Care to finish it up? thanks, greg k-h ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id78&alloc_id371&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