From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932842AbbA2JIt (ORCPT ); Thu, 29 Jan 2015 04:08:49 -0500 Received: from ip4-83-240-67-251.cust.nbox.cz ([83.240.67.251]:44935 "EHLO ip4-83-240-18-248.cust.nbox.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932760AbbA2JIn (ORCPT ); Thu, 29 Jan 2015 04:08:43 -0500 From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Jiri Jaburek , Takashi Iwai , Jiri Slaby Subject: [PATCH 3.12 029/176] ALSA: usb-audio: extend KEF X300A FU 10 tweak to Arcam rPAC Date: Wed, 28 Jan 2015 15:27:39 +0100 Message-Id: <3d041411e3b467708e64f2bbb7b5d8b0885150aa.1422455352.git.jslaby@suse.cz> X-Mailer: git-send-email 2.2.2 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Jaburek 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit d70a1b9893f820fdbcdffac408c909c50f2e6b43 upstream. The Arcam rPAC seems to have the same problem - whenever anything (alsamixer, udevd, 3.9+ kernel from 60af3d037eb8c, ..) attempts to access mixer / control interface of the card, the firmware "locks up" the entire device, resulting in SNDRV_PCM_IOCTL_HW_PARAMS failed (-5): Input/output error from alsa-lib. Other operating systems can somehow read the mixer (there seems to be playback volume/mute), but any manipulation is ignored by the device (which has hardware volume controls). Signed-off-by: Jiri Jaburek Signed-off-by: Takashi Iwai Signed-off-by: Jiri Slaby --- sound/usb/mixer_maps.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c index 0339d464791a..4df31b0f94a3 100644 --- a/sound/usb/mixer_maps.c +++ b/sound/usb/mixer_maps.c @@ -322,8 +322,11 @@ static struct usbmix_name_map hercules_usb51_map[] = { { 0 } /* terminator */ }; -static const struct usbmix_name_map kef_x300a_map[] = { - { 10, NULL }, /* firmware locks up (?) when we try to access this FU */ +/* some (all?) SCMS USB3318 devices are affected by a firmware lock up + * when anything attempts to access FU 10 (control) + */ +static const struct usbmix_name_map scms_usb3318_map[] = { + { 10, NULL }, { 0 } }; @@ -415,8 +418,14 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = { .map = ebox44_map, }, { + /* KEF X300A */ .id = USB_ID(0x27ac, 0x1000), - .map = kef_x300a_map, + .map = scms_usb3318_map, + }, + { + /* Arcam rPAC */ + .id = USB_ID(0x25c4, 0x0003), + .map = scms_usb3318_map, }, { 0 } /* terminator */ }; -- 2.2.2