From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E015C43603 for ; Tue, 10 Dec 2019 14:14:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 157F420836 for ; Tue, 10 Dec 2019 14:14:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727565AbfLJOOM (ORCPT ); Tue, 10 Dec 2019 09:14:12 -0500 Received: from mx2.suse.de ([195.135.220.15]:32862 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727145AbfLJOOG (ORCPT ); Tue, 10 Dec 2019 09:14:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id E394AAF26; Tue, 10 Dec 2019 14:14:04 +0000 (UTC) From: Takashi Iwai To: Greg Kroah-Hartman Cc: devel@driverdev.osuosl.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com Subject: [PATCH for-5.6 1/4] staging: most: Use managed buffer allocation Date: Tue, 10 Dec 2019 15:13:53 +0100 Message-Id: <20191210141356.18074-2-tiwai@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191210141356.18074-1-tiwai@suse.de> References: <20191210141356.18074-1-tiwai@suse.de> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Clean up the driver with the new managed buffer allocation API. Also remove the unnecessary checks of channels in hw_params callback as this is guaranteed by the hw constraints in anyway. After these cleanups, the hw_params and hw_free callbacks became empty, hence dropped. Signed-off-by: Takashi Iwai --- drivers/staging/most/sound/sound.c | 44 +------------------------------------- 1 file changed, 1 insertion(+), 43 deletions(-) diff --git a/drivers/staging/most/sound/sound.c b/drivers/staging/most/sound/sound.c index 723d0bd1cc21..7c212c0db980 100644 --- a/drivers/staging/most/sound/sound.c +++ b/drivers/staging/most/sound/sound.c @@ -322,45 +322,6 @@ static int pcm_close(struct snd_pcm_substream *substream) return 0; } -/** - * pcm_hw_params - implements hw_params callback function for PCM middle layer - * @substream: sub-stream pointer - * @hw_params: contains the hardware parameters set by the application - * - * This is called when the hardware parameters is set by the application, that - * is, once when the buffer size, the period size, the format, etc. are defined - * for the PCM substream. Many hardware setups should be done is this callback, - * including the allocation of buffers. - * - * Returns 0 on success or error code otherwise. - */ -static int pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct channel *channel = substream->private_data; - - if ((params_channels(hw_params) > channel->pcm_hardware.channels_max) || - (params_channels(hw_params) < channel->pcm_hardware.channels_min)) { - pr_err("Requested number of channels not supported.\n"); - return -EINVAL; - } - return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); -} - -/** - * pcm_hw_free - implements hw_free callback function for PCM middle layer - * @substream: substream pointer - * - * This is called to release the resources allocated via hw_params. - * This function will be always called before the close callback is called. - * - * Returns 0 on success or error code otherwise. - */ -static int pcm_hw_free(struct snd_pcm_substream *substream) -{ - return snd_pcm_lib_free_pages(substream); -} - /** * pcm_prepare - implements prepare callback function for PCM middle layer * @substream: substream pointer @@ -463,8 +424,6 @@ static const struct snd_pcm_ops pcm_ops = { .open = pcm_open, .close = pcm_close, .ioctl = snd_pcm_lib_ioctl, - .hw_params = pcm_hw_params, - .hw_free = pcm_hw_free, .prepare = pcm_prepare, .trigger = pcm_trigger, .pointer = pcm_pointer, @@ -661,8 +620,7 @@ static int audio_probe_channel(struct most_interface *iface, int channel_id, pcm->private_data = channel; strscpy(pcm->name, device_name, sizeof(pcm->name)); snd_pcm_set_ops(pcm, direction, &pcm_ops); - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC, - NULL, 0, 0); + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0); return 0; -- 2.16.4