diff options
| author | Geoffrey D. Bennett <g@b4.vu> | 2026-02-21 02:36:56 +1030 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-02-23 09:57:10 +0100 |
| commit | 0d58273be0b9c3cec3be5488ca37f6ddbaf13cf0 (patch) | |
| tree | 3f5114799cf7f959ecf1ce9a6d38ef4bc973090c /sound | |
| parent | 38c322068a26a01d7ff64da92179e68cdde9860b (diff) | |
| download | linux-next-0d58273be0b9c3cec3be5488ca37f6ddbaf13cf0.tar.gz linux-next-0d58273be0b9c3cec3be5488ca37f6ddbaf13cf0.zip | |
ALSA: usb-audio: Skip clock selector for Focusrite devices
Add QUIRK_FLAG_SKIP_CLOCK_SELECTOR for Focusrite devices.
During interface parsing, snd_usb_clock_find_source() reads the clock
selector value then writes it back unchanged. On Focusrite devices
this redundant write results in a ~300ms delay per altsetting, adding
~1.8s to probe time on a typical device with 6 altsettings.
Enabling SKIP_CLOCK_SELECTOR skips the redundant write-back.
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/00e53ae0a508b41516b41833daa17823381a649c.1771594828.git.g@b4.vu
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/quirks.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index b13d0f4d25ac..fbceed8e8d36 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -2424,6 +2424,7 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = { VENDOR_FLG(0x07fd, /* MOTU */ QUIRK_FLAG_VALIDATE_RATES), VENDOR_FLG(0x1235, /* Focusrite Novation */ + QUIRK_FLAG_SKIP_CLOCK_SELECTOR | QUIRK_FLAG_SKIP_IFACE_SETUP), VENDOR_FLG(0x1511, /* AURALiC */ QUIRK_FLAG_DSD_RAW), |