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    Subject[PATCH 5.16 0393/1039] usb: gadget: u_audio: Subdevice 0 for capture ctls
    Date
    From: Pavel Hofman <pavel.hofman@ivitera.com>

    [ 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@ivitera.com>
    Link: https://lore.kernel.org/r/20220105104643.90125-1-pavel.hofman@ivitera.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    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 4fb05f9576a67..4561d7a183ff4 100644
    --- a/drivers/usb/gadget/function/u_audio.c
    +++ b/drivers/usb/gadget/function/u_audio.c
    @@ -1147,7 +1147,7 @@ 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)
    @@ -1170,7 +1170,7 @@ 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


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