On 07/17/2013 06:53 PM, Torstein Hegge wrote:
On Wed, Jul 17, 2013 at 16:12:12 -0500, Chris J Arges wrote:
This patch is similar to commit 1762a59d8e8b5e99f6f4a0f292b40f3cacb108ba. The same non-standard interface descriptor causes snd_usb_create_mixer() to fail for the Focusrite Scarlett 18i8 as well.
Did you test this on a recent kernel? I don't think this quirk or the quirk introduced by 1762a59d "ALSA: usb-audio: Add quirk for Focusrite Scarlett 18i6" is necessary since kernel 3.9, as it includes:
4d7b86c98 "ALSA: snd-usb: mixer: propagate errors up the call chain" 83ea5d18d "ALSA: snd-usb: mixer: ignore -EINVAL in snd_usb_mixer_controls()" 61ac51301 "ALSA: usb: Parse UAC2 extension unit like for UAC1"
Those were tested on a Focusrite Scarlett 8i6, but the lsusb output from 18i6 and 8i6 looks similar, http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg29426.html http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg27776.html I'm guessing the 18i8 isn't that different.
Re-testing this, I see that you are right. The mixer still doesn't work, but at least its usable for playback/recording/midi. Ignore this patch then.
Thanks, --chris j arges
Torstein
sound/usb/quirks-table.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+)
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 7f1585b..b954ec5 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -3232,6 +3232,52 @@ YAMAHA_DEVICE(0x7010, "UB99"), } } }, +{
- /*
* Focusrite Scarlett 18i8** Avoid mixer creation similar to the Scarlett 18i6 interface.*/- USB_DEVICE(0x1235, 0x8014),
- .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
.vendor_name = "Focusrite",.product_name = "Scarlett 18i8",.ifnum = QUIRK_ANY_INTERFACE,.type = QUIRK_COMPOSITE,.data = & (const struct snd_usb_audio_quirk[]) {{/* InterfaceSubClass 1 (Control Device) */.ifnum = 0,.type = QUIRK_IGNORE_INTERFACE},{.ifnum = 1,.type = QUIRK_AUDIO_STANDARD_INTERFACE},{.ifnum = 2,.type = QUIRK_AUDIO_STANDARD_INTERFACE},{/* InterfaceSubClass 1 (Control Device) */.ifnum = 3,.type = QUIRK_IGNORE_INTERFACE},{.ifnum = 4,.type = QUIRK_MIDI_STANDARD_INTERFACE},{/* InterfaceSubClass 1 (Device Firmware Update) */.ifnum = 5,.type = QUIRK_IGNORE_INTERFACE},{.ifnum = -1}}- }
+},
{ /* -- 1.7.9.5