6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@xxxxxxx>
commit 82937056967da052cbc04b4435c13db84192dc52 upstream.
The UMP Function Block info m1.0 field (represented by is_midi1 sysfs
entry) is an enumeration from 0 to 2, while the midi2 gadget driver
incorrectly copies it to the corresponding snd_ump_block_info.flags
bits as-is. This made the wrong bit flags set when m1.0 = 2.
This patch corrects the wrong interpretation of is_midi1 bits.
Fixes: 29ee7a4dddd5 ("usb: gadget: midi2: Add configfs support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Link: https://lore.kernel.org/r/20241127070213.8232-1-tiwai@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/gadget/function/f_midi2.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/usb/gadget/function/f_midi2.c
+++ b/drivers/usb/gadget/function/f_midi2.c
@@ -1593,7 +1593,11 @@ static int f_midi2_create_card(struct f_
fb->info.midi_ci_version = b->midi_ci_version;
fb->info.ui_hint = reverse_dir(b->ui_hint);
fb->info.sysex8_streams = b->sysex8_streams;
- fb->info.flags |= b->is_midi1;
+ if (b->is_midi1 < 2)
+ fb->info.flags |= b->is_midi1;
+ else
+ fb->info.flags |= SNDRV_UMP_BLOCK_IS_MIDI1 |
+ SNDRV_UMP_BLOCK_IS_LOWSPEED;
strscpy(fb->info.name, ump_fb_name(b),
sizeof(fb->info.name));
}
