On Thu, 15 Jan 2009, Mauro Carvalho Chehab wrote: > On Wed, 14 Jan 2009 10:44:38 -0600 (CST) > Mike Isely <isely@xxxxxxxxx> wrote: [...] > > > And I'd appreciate some suggestions from anyone about a means via the > > V4L interface to make available a device-specific identifier, like a > > serial number. Yes I know such a thing is not always available with all > > devices, but it is available for Hauppauge devices in general and users > > want to have access to that information for purposes of mapping behavior > > in userspace. > > Sorry, but I didn't understand the need. What do you want to map in userspace? > Except for debugging purposes, or when the user has more than one device > connected, I can't see any other usage for such identifier. > > For debug, you can just print the serial number. For device unique > identification, there are the sysfs stuff, used by udev. > > Am I missing something? > Rather than paraphrase it all here, I invite you to look at the discussion thread on the pvrusb2 list where the topic came up: http://www.isely.net/pipermail/pvrusb2/2009-January/002091.html After looking over that discussion, let's talk about it. I think I know where you are heading with this, but I have other questions (if I'm right about where you're heading) and I'd like you to see that thread first. -Mike -- Mike Isely isely @ pobox (dot) com PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
