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    Subject[PATCH 5.7 072/265] ALSA: usb-audio: Add implicit feedback quirk for SSL2+.
    Date
    From: Laurence Tratt <laurie@tratt.net>

    commit e7585db1b0b5b4e4eb1967bb1472df308f7ffcbf upstream.

    This uses the same quirk as the Motu M2 and M4 to ensure the driver uses the
    audio interface's clock. Tested on an SSL2+.

    Signed-off-by: Laurence Tratt <laurie@tratt.net>
    Cc: <stable@vger.kernel.org>
    Link: https://lore.kernel.org/r/20200612111807.dgnig6rwhmsl2bod@overdrive.tratt.net
    Signed-off-by: Takashi Iwai <tiwai@suse.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    sound/usb/pcm.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
    index 3411e27eb64bb..39aec83f8aca4 100644
    --- a/sound/usb/pcm.c
    +++ b/sound/usb/pcm.c
    @@ -367,6 +367,7 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
    ifnum = 0;
    goto add_sync_ep_from_ifnum;
    case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
    + case USB_ID(0x31e9, 0x0002): /* Solid State Logic SSL2+ */
    ep = 0x81;
    ifnum = 2;
    goto add_sync_ep_from_ifnum;
    --
    2.25.1
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