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charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: "alsa-devel@alsa-project.org" X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Sat, 24 Jul 2021 12:07:14 +0200, rv71@onet.eu wrote: > > Hello,  > > ALSA Sequencer always creates MIDI Through Port with the id 14:0. However, I can't find where it is defined that this special port will have this particular id/number. I also don't see any definition in seq.h regarding this ( unlike the timer and announce special port, for example). Can you explain? It's a fixed client number defined with SNDRV_SEQ_CLIENT_DUMMY in the kernel header include/uapi/sound/asequencer.h (which will be installed in /usr/include/sound/asequencer.h). Oh, and now I noticed that the comment in sound/core/seq/seq_dummy.c is with an old number that is no longer correct. Will fix up :) Takashi