From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964991AbbCDHpX (ORCPT ); Wed, 4 Mar 2015 02:45:23 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:42638 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932636AbbCDGRK (ORCPT ); Wed, 4 Mar 2015 01:17:10 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Adrian Knoth , Takashi Iwai Subject: [PATCH 3.18 043/151] ALSA: hdspm - Constrain periods to 2 on older cards Date: Tue, 3 Mar 2015 22:12:57 -0800 Message-Id: <20150304055504.371672084@linuxfoundation.org> X-Mailer: git-send-email 2.3.1 In-Reply-To: <20150304055457.084276421@linuxfoundation.org> References: <20150304055457.084276421@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Knoth commit f0153c3d948c1764f6c920a0675d86fc1d75813e upstream. RME RayDAT and AIO use a fixed buffer size of 16384 samples. With period sizes of 32-4096, this translates to 4-512 periods. The older RME cards have a variable buffer size but require exactly two periods. This patch enforces nperiods=2 on those cards. Signed-off-by: Adrian Knoth Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/rme9652/hdspm.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -6114,6 +6114,9 @@ static int snd_hdspm_playback_open(struc snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 64, 8192); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; } @@ -6188,6 +6191,9 @@ static int snd_hdspm_capture_open(struct snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 64, 8192); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; }