From patchwork Mon Dec 29 18:41:45 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars-Peter Clausen X-Patchwork-Id: 5550261 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 03EA3BF6C3 for ; Mon, 29 Dec 2014 19:47:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2E6C120121 for ; Mon, 29 Dec 2014 19:47:15 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id C12822016C for ; Mon, 29 Dec 2014 19:47:13 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 07B4A26512B; Mon, 29 Dec 2014 20:47:13 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 4A7152605BD; Mon, 29 Dec 2014 20:32:44 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 24A61260586; Mon, 29 Dec 2014 20:32:42 +0100 (CET) Received: from smtp-out-184.synserver.de (smtp-out-184.synserver.de [212.40.185.184]) by alsa0.perex.cz (Postfix) with ESMTP id 693CF261A40 for ; Mon, 29 Dec 2014 19:41:54 +0100 (CET) Received: (qmail 19194 invoked by uid 0); 29 Dec 2014 18:41:53 -0000 X-SynServer-TrustedSrc: 1 X-SynServer-AuthUser: lars@metafoo.de X-SynServer-PPID: 18895 Received: from ppp-88-217-12-186.dynamic.mnet-online.de (HELO lars-adi-laptop.fritz.box) [88.217.12.186] by 217.119.54.96 with SMTP; 29 Dec 2014 18:41:53 -0000 From: Lars-Peter Clausen To: Jaroslav Kysela , Takashi Iwai Date: Mon, 29 Dec 2014 19:41:45 +0100 Message-Id: <1419878506-28684-8-git-send-email-lars@metafoo.de> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1419878506-28684-1-git-send-email-lars@metafoo.de> References: <1419878506-28684-1-git-send-email-lars@metafoo.de> Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen Subject: [alsa-devel] [PATCH 8/9] ALSA: snd_pcm_oss_period_size: Use round{up, down}_pow_of_two() X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Instead of opencoding them use the standard roundup_pow_of_two() and rounddown_pow_of_two() helper functions. This gets rids one of the few users of the custom ld2() function and also makes it a bit more obvious what the code does. Signed-off-by: Lars-Peter Clausen --- sound/core/oss/pcm_oss.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index ada69d7..80423a4c 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -719,7 +719,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, oss_buffer_size = snd_pcm_plug_client_size(substream, snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; - oss_buffer_size = 1 << ld2(oss_buffer_size); + oss_buffer_size = rounddown_pow_of_two(oss_buffer_size); if (atomic_read(&substream->mmap_count)) { if (oss_buffer_size > runtime->oss.mmap_bytes) oss_buffer_size = runtime->oss.mmap_bytes; @@ -755,14 +755,14 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, min_period_size = snd_pcm_plug_client_size(substream, snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); min_period_size *= oss_frame_size; - min_period_size = 1 << (ld2(min_period_size - 1) + 1); + min_period_size = roundup_pow_of_two(min_period_size); if (oss_period_size < min_period_size) oss_period_size = min_period_size; max_period_size = snd_pcm_plug_client_size(substream, snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); max_period_size *= oss_frame_size; - max_period_size = 1 << ld2(max_period_size); + max_period_size = rounddown_pow_of_two(max_period_size); if (oss_period_size > max_period_size) oss_period_size = max_period_size;