From 570b5004f8279d5804e614d56ec2820e89290418 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 4 Nov 2021 12:23:08 +0100
Subject: [PATCH] ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table
Git-commit: 22390ce786c59328ccd13c329959dee1e8757487
Patch-mainline: v5.15-rc7
References: stable-5.14.17

commit 22390ce786c59328ccd13c329959dee1e8757487 upstream.

This is a fix equivalent with the upstream commit 22390ce786c5 ("ALSA:
Usb-audio: add Schiit Hel device to quirk table"), adapted to the
earlier kernels up to 5.14.y.  It adds the quirk entry with the old
ignore_ctl_error flag to the usbmix_ctl_maps, instead.

The original patch description says:
    The Shciit Hel device responds to the ctl message for the mic capture
    switch with a timeout of -EPIPE:

            usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1
            usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1
            usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1
            usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1

    This seems safe to ignore as the device works properly with the control
    message quirk, so add it to the quirk table so all is good.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/usb/quirks.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1902,6 +1902,8 @@ static const struct usb_audio_quirk_flag
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x2912, 0x30c8, /* Audioengine D1 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
+		   QUIRK_FLAG_IGNORE_CTL_ERROR),
 	DEVICE_FLG(0x413c, 0xa506, /* Dell AE515 sound bar */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x534d, 0x2109, /* MacroSilicon MS2109 */