From: Pavel Hofman <pavel.hofman@xxxxxxxxxxx>
[ Upstream commit 601a5bc1aeef772ab1f47582fd322957799f5ab5 ]
Both capture and playback alsa devices use subdevice 0. Yet capture-side
ctls are defined for subdevice 1. The patch sets subdevice 0 for them.
Fixes: 02de698ca812 ("usb: gadget: u_audio: add bi-directional volume and mute support")
Signed-off-by: Pavel Hofman <pavel.hofman@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220105104643.90125-1-pavel.hofman@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/usb/gadget/function/u_audio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c
index ad16163b5ff80..d22ac23c94b0f 100644
--- a/drivers/usb/gadget/function/u_audio.c
+++ b/drivers/usb/gadget/function/u_audio.c
@@ -1097,7 +1097,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name,
}
kctl->id.device = pcm->device;
- kctl->id.subdevice = i;
+ kctl->id.subdevice = 0;
err = snd_ctl_add(card, kctl);
if (err < 0)
@@ -1120,7 +1120,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name,
}
kctl->id.device = pcm->device;
- kctl->id.subdevice = i;
+ kctl->id.subdevice = 0;
kctl->tlv.c = u_audio_volume_tlv;
--
2.34.1
