This is a note to let you know that I've just added the patch titled ALSA: usb-audio: Configure Pioneer DJM-850 samplerate to the 5.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: alsa-usb-audio-configure-pioneer-djm-850-samplerate.patch and it can be found in the queue-5.12 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 1a2a94a4392d5d1e5e25cc127573452f4c7fa9b8 Mon Sep 17 00:00:00 2001 From: Nicolas MURE <nicolas.mure2019@xxxxxxxxx> Date: Mon, 1 Mar 2021 16:27:28 +0100 Subject: ALSA: usb-audio: Configure Pioneer DJM-850 samplerate From: Nicolas MURE <nicolas.mure2019@xxxxxxxxx> commit 1a2a94a4392d5d1e5e25cc127573452f4c7fa9b8 upstream. Send an `URB_CONTROL out` USB frame to the device to configure its samplerate. This should be done before using the device for audio streaming (capture or playback). See https://github.com/nm2107/Pioneer-DJM-850-driver-reverse-engineering/blob/172fb9a61055960c88c67b7c416fe5bf3609807b/doc/windows-dvs/framerate-setting/README.md Signed-off-by: Nicolas MURE <nicolas.mure2019@xxxxxxxxx> Link: https://lore.kernel.org/r/20210301152729.18094-4-nicolas.mure2019@xxxxxxxxx Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/usb/quirks.c | 3 +++ 1 file changed, 3 insertions(+) --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1511,6 +1511,9 @@ void snd_usb_set_format_quirk(struct snd case USB_ID(0x2b73, 0x0013): /* Pioneer DJM-450 */ pioneer_djm_set_format_quirk(subs, 0x0082); break; + case USB_ID(0x08e4, 0x0163): /* Pioneer DJM-850 */ + pioneer_djm_set_format_quirk(subs, 0x0086); + break; } } Patches currently in stable-queue which might be from nicolas.mure2019@xxxxxxxxx are queue-5.12/alsa-usb-audio-configure-pioneer-djm-850-samplerate.patch