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authorTakashi Iwai <tiwai@suse.de>2024-11-27 08:00:58 +0100
committerTakashi Iwai <tiwai@suse.de>2024-11-27 08:10:09 +0100
commit7be34f6feedd60e418de1c2c48e661d70416635f (patch)
treefcfeb0e4761ba0aeff45ce744d174e9e6af84725 /sound/core
parent9ad467a2b2716d4ed12f003b041aa6c776a13ff5 (diff)
ALSA: ump: Fix evaluation of MIDI 1.0 FB info
The m1.0 field of UMP Function Block info specifies whether the given FB is a MIDI 1.0 port or not. When implementing the UMP support on Linux, I somehow interpreted as if it were bit flags, but the field is actually an enumeration from 0 to 2, where 2 means MIDI 1.0 *and* low speed. This patch corrects the interpretation and sets the right bit flags depending on the m1.0 field of FB Info. This effectively fixes the missing detection of MIDI 1.0 FB when m1.0 is 2. Fixes: 37e0e14128e0 ("ALSA: ump: Support UMP Endpoint and Function Block parsing") Cc: <stable@vger.kernel.org> Link: https://patch.msgid.link/20241127070059.8099-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/ump.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/core/ump.c b/sound/core/ump.c
index 5d4dd207e5ab..6d0aac6c763f 100644
--- a/sound/core/ump.c
+++ b/sound/core/ump.c
@@ -788,7 +788,10 @@ static void fill_fb_info(struct snd_ump_endpoint *ump,
info->ui_hint = buf->fb_info.ui_hint;
info->first_group = buf->fb_info.first_group;
info->num_groups = buf->fb_info.num_groups;
- info->flags = buf->fb_info.midi_10;
+ if (buf->fb_info.midi_10 < 2)
+ info->flags = buf->fb_info.midi_10;
+ else
+ info->flags = SNDRV_UMP_BLOCK_IS_MIDI1 | SNDRV_UMP_BLOCK_IS_LOWSPEED;
info->active = buf->fb_info.active;
info->midi_ci_version = buf->fb_info.midi_ci_version;
info->sysex8_streams = buf->fb_info.sysex8_streams;