This is a note to let you know that I've just added the patch titled

ALSA: usb-audio: Add native DSD support for Esoteric D-05X

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: alsa-usb-audio-add-native-dsd-support-for-esoteric-d-05x.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 866f7ed7d67936dcdbcddc111c8af878c918fe7c Mon Sep 17 00:00:00 2001

From: Jussi Laako jussi@sonarnerd.net Date: Thu, 7 Dec 2017 12:58:33 +0200 Subject: ALSA: usb-audio: Add native DSD support for Esoteric D-05X

From: Jussi Laako jussi@sonarnerd.net

commit 866f7ed7d67936dcdbcddc111c8af878c918fe7c upstream.

Adds VID:PID of Esoteric D-05X to the TEAC device id's. Renames the is_teac_50X_dac() function to is_teac_dsd_dac() to cover broader device family from the same corporation sharing the same USB audio implementation.

Signed-off-by: Jussi Laako jussi@sonarnerd.net Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/usb/quirks.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1170,10 +1170,11 @@ static bool is_marantz_denon_dac(unsigne /* TEAC UD-501/UD-503/NT-503 USB DACs need a vendor cmd to switch * between PCM/DOP and native DSD mode */ -static bool is_teac_50X_dac(unsigned int id) +static bool is_teac_dsd_dac(unsigned int id) { switch (id) { case USB_ID(0x0644, 0x8043): /* TEAC UD-501/UD-503/NT-503 */ + case USB_ID(0x0644, 0x8044): /* Esoteric D-05X */ return true; } return false; @@ -1206,7 +1207,7 @@ int snd_usb_select_mode_quirk(struct snd break; } mdelay(20); - } else if (is_teac_50X_dac(subs->stream->chip->usb_id)) { + } else if (is_teac_dsd_dac(subs->stream->chip->usb_id)) { /* Vendor mode switch cmd is required. */ switch (fmt->altsetting) { case 3: /* DSD mode (DSD_U32) requested */ @@ -1376,7 +1377,7 @@ u64 snd_usb_interface_dsd_format_quirks( }

/* TEAC devices with USB DAC functionality */ - if (is_teac_50X_dac(chip->usb_id)) { + if (is_teac_dsd_dac(chip->usb_id)) { if (fp->altsetting == 3) return SNDRV_PCM_FMTBIT_DSD_U32_BE; }

Patches currently in stable-queue which might be from jussi@sonarnerd.net are

queue-4.9/alsa-usb-audio-add-native-dsd-support-for-esoteric-d-05x.patch