This is a note to let you know that I've just added the patch titled ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table to the 5.10-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-add-schiit-hel-device-to-mixer-map-quirk-table.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Nov 4 01:08:24 PM CET 2021 From: Takashi Iwai <tiwai@xxxxxxx> Date: Thu, 4 Nov 2021 12:23:08 +0100 Subject: ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table To: stable@xxxxxxxxxxxxxxx Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx Message-ID: <20211104112309.30984-2-tiwai@xxxxxxx> From: Takashi Iwai <tiwai@xxxxxxx> 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@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/usb/mixer_maps.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/sound/usb/mixer_maps.c +++ b/sound/usb/mixer_maps.c @@ -539,6 +539,10 @@ static const struct usbmix_ctl_map usbmi .map = scms_usb3318_map, }, { + .id = USB_ID(0x30be, 0x0101), /* Schiit Hel */ + .ignore_ctl_error = 1, + }, + { /* Bose Companion 5 */ .id = USB_ID(0x05a7, 0x1020), .map = bose_companion5_map, Patches currently in stable-queue which might be from tiwai@xxxxxxx are queue-5.10/alsa-usb-audio-add-audient-id14-to-mixer-map-quirk-table.patch queue-5.10/alsa-usb-audio-add-schiit-hel-device-to-mixer-map-quirk-table.patch