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UMP v1.1 spec allows to inform whether the function blocks are static and not dynamically updated. Add a new flag bit to snd_ump_endpoint_info to reflect that attribute, too. The flag is set when a USB MIDI device is still in the old MIDI 2.0 without UMP 1.1 support. Then the driver falls back to GTBs, and they are supposed to be static-only. Link: https://lore.kernel.org/r/20230612081054.17200-10-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>