Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964790AbbFPJbs (ORCPT ); Tue, 16 Jun 2015 05:31:48 -0400 Received: from mail.kernel.org ([198.145.29.136]:54651 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932374AbbFPIly (ORCPT ); Tue, 16 Jun 2015 04:41:54 -0400 From: lizf@kernel.org To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Adrian Knoth , Takashi Iwai , Zefan Li Subject: [PATCH 3.4 035/172] ALSA: hdspm - Constrain periods to 2 on older cards Date: Tue, 16 Jun 2015 16:34:49 +0800 Message-Id: <1434443826-4929-35-git-send-email-lizf@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1434443587-4599-1-git-send-email-lizf@kernel.org> References: <1434443587-4599-1-git-send-email-lizf@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1512 Lines: 49 From: Adrian Knoth 3.4.108-rc1 review patch. If anyone has any objections, please let me know. ------------------ 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: Zefan Li --- sound/pci/rme9652/hdspm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index bc030a2..0627ffe 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -6042,6 +6042,12 @@ static int snd_hdspm_capture_open(struct snd_pcm_substream *substream) 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); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/