diff options
| author | Takashi Iwai <tiwai@suse.de> | 2023-06-12 10:10:53 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-06-12 18:22:34 +0200 |
| commit | 01dfa8e969dbbc72fc4564e8d61c905c4f3a2352 (patch) | |
| tree | f8c3181d29e56c08ac6026a2d58f4495fd830900 /sound/usb | |
| parent | 6a8b4800ae54e9ceb8d017bcfb61d04ff0da90f2 (diff) | |
ALSA: ump: Add info flag bit for static blocks
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>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/midi2.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/usb/midi2.c b/sound/usb/midi2.c index 13fa1978267a..ee2835741479 100644 --- a/sound/usb/midi2.c +++ b/sound/usb/midi2.c @@ -888,6 +888,8 @@ static int create_blocks_from_gtb(struct snd_usb_midi2_interface *umidi) /* Blocks have been already created? */ if (rmidi->ump_parsed || rmidi->ump->info.num_blocks) continue; + /* GTB is static-only */ + rmidi->ump->info.flags |= SNDRV_UMP_EP_INFO_STATIC_BLOCKS; /* loop over GTBs */ for (dir = 0; dir < 2; dir++) { if (!rmidi->eps[dir]) |