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charset=US-ASCII Message-ID-Hash: YEF2JQ7EYGM3TRQNOI6GMLLSMYYRIFYZ X-Message-ID-Hash: YEF2JQ7EYGM3TRQNOI6GMLLSMYYRIFYZ X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Tue, 13 Jun 2023 05:22:53 +0200, happy.debugging@gmail.com wrote: > > The Endpoint Product ID is a string field and supposed to be unique. It's copied from `iSerialNumber` of the device for USB MIDI. > MIDI.ORG published an updated UMP specification today, dated June 15, 2023. Section 7.1.5 Adds the concept of Product Instance ID. Instead of returning the VID/PID, could this ID be returnedserial instead in the port data if it is available from the device ? See the latest patch set for the new UMP 1.1 spec: https://lore.kernel.org/r/20230612081054.17200-1-tiwai@suse.de It's been already merged to sound git tree. Takashi