From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Date: Sat, 01 Jun 2002 00:05:25 +0000 Subject: Re: Which node has the device been bound to? 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 > > In case of one iPAQ, we can find the relevant log entry by grepping the > > LAST matched line. But if two iPAQs are attached nearly at the same > > time, the last matched line may not be the relevant entry because > > context switching may happen between two agent scripts. > > > > Do you have any method that can solve it? > > Right now, no, sorry. > > In the 2.5 tree, the usbserial driver creates a > /proc/tty/driver/usbserial file that allows you to see all of the > different usbserial devices currently connected to the system, but it > doesn't really help you in determining which iPAQ is which. Do you think that it's wise to introduce yet another driver specific file ? > The driverfs changes that are slowly going into the tree might > eventually help you out. Check out the changes that will be in 2.5.20 > for the usb tree (they look much like the pci tree in 2.5.19 if you want > to compare that right now.) > > And how would you be able to determine uniquely each iPAQ anyway? Do > they have unique USB serial numbers or would you want to determine the > device based on the physical USB port it is plugged into on the host? You might not like it, but I still think that a standard ioctl() would be the best way to export such information. Could you enlighten me on how you want to make sure that the information you act on is guaranteed to be current, if you do not base the mechanism on the opened device ? Regards Oliver _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ 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