From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: [PATCH] Tascam US-224/428 MMC Implementation Date: Mon, 02 Aug 2004 17:52:35 +0200 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <32814.192.168.1.8.1091390483.squirrel@192.168.1.8> <32820.192.168.1.8.1091391304.squirrel@192.168.1.8> <32825.192.168.1.5.1091448735.squirrel@192.168.1.5> <33106.192.168.1.5.1091461389.squirrel@192.168.1.5> Mime-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <33106.192.168.1.5.1091461389.squirrel@192.168.1.5> Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Rui Nuno Capela Cc: alsa-devel@lists.sourceforge.net, Karsten Wiese , martin-langer@gmx.de, ws@seh.de List-Id: alsa-devel@alsa-project.org At Mon, 2 Aug 2004 16:43:09 +0100 (WEST), Rui Nuno Capela wrote: > > Hi Takashi, Karten, Martin, > everyone else, > > >> BTW, I think this has been asked before but didn't had the chance to > >> know the right answer, so what's keeping snd-usb-usx2y out of the > >> stock 2.6 kernel.org tree? > >> > >> Anything to do with firmware licensing? IIRC there's already a GPL'd > >> bootstrap loader... > > > > No, just because I don't know whether the driver works on 2.6 kernel. > > No one reported/requested on alsa-devel ML yet. > > > > If it's confirmed to work, it's ok to push it up to 2.6 tree after > > some reviews/clean-up's. > > > > OK. Now that you're asking, I've been testing on a couple of my boxes > and the results are a mix of success and a complete disappointment: > > 1) SUSE 9.1 Professional, vanilla 2.6.8-rc2 SMP/HT preemptible, NPTL 0.61: > - hotplug/firmware load: OK. > - snd-usb-usx2y 1.0.5a: OK, jackd RT: OK. > - snd-usb-usx2y CVS HEAD 2004-08-01: OK, jackd RT: OK. > > 2) Mandrake 10.0 Official vanilla 2.6.8-rc2 UP preemptible, NPTL 0.60: > - hotplug/firmware load: OK. > - snd-usb-usx2y 1.0.5a: OK, jackd RT: unstable, non-RT seems OK. > - snd-usb-usx2y CVS HEAD 2004-08-01: KO. HORROR! > As soon as the pcm device is requested (e.g. via aplay) > the whole system freezes, puff! That's bad. Can you get any trace via magic sysrq? > This is a true showstopper as a matter of fact. FWIW it doesn't > matter whether on NPTL or linuxthreads. In fact, I don't even know > if this pthreads stuff has any influence at all. Certainly not. > Please note that last patch of Karsten's probably did the > difference, unfortunately for worse :/ > > FYI I'm on 2.6 since January, and I can certainly argue that on this > SUSE box everything is working flawlessly, period. Problem comes on that > Mdk box, don't know why. Is it due to SMP/HT? Could be. Can you try a UP kernel on Mandrake for testing? Anyway, we'll need clean up of codes before moving to alsa-kernel tree. The all 2.4/2.2-specific codes should be stripped down and provided as patches in alsa-driver. I can do it but I'm afraid of breaking something. Could any usx2y owner take this action? Takashi ------------------------------------------------------- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com