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| author | Alexander Tsoy <alexander@tsoy.me> | 2020-01-15 18:13:58 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-01-16 10:45:24 +0100 |
| commit | c249177944b650816069f6c49b769baaa94339dc (patch) | |
| tree | fbc98cfcf5605d830a52446261bdad462abec6c1 /sound/usb | |
| parent | a3afa29942b84b4e2548beacccc3a68b8d77e3dc (diff) | |
| download | linux-c249177944b650816069f6c49b769baaa94339dc.tar.gz linux-c249177944b650816069f6c49b769baaa94339dc.tar.bz2 linux-c249177944b650816069f6c49b769baaa94339dc.zip | |
ALSA: usb-audio: add implicit fb quirk for MOTU M Series
This fixes crackling sound during playback.
Further note: MOTU is known for reusing Product IDs for different
devices or different generations of the device (e.g. MicroBook
I/II/IIc shares a single Product ID). This patch was only tested with
M4 audio interface, but the same Product ID is also used by M2. Hope
it will work for M2 as well.
Signed-off-by: Alexander Tsoy <alexander@tsoy.me>
Link: https://lore.kernel.org/r/20200115151358.56672-1-alexander@tsoy.me
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/pcm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 2f6a80ca36fc..5844a0c9d0db 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -361,6 +361,10 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, ep = 0x84; ifnum = 0; goto add_sync_ep_from_ifnum; + case USB_ID(0x07fd, 0x0008): /* MOTU M Series */ + ep = 0x81; + ifnum = 2; + goto add_sync_ep_from_ifnum; case USB_ID(0x0582, 0x01d8): /* BOSS Katana */ /* BOSS Katana amplifiers do not need quirks */ return 0; |