From patchwork Mon Aug 14 11:55:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 135385 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b824:0:b0:3f2:4152:657d with SMTP id z4csp2714460vqi; Mon, 14 Aug 2023 05:35:45 -0700 (PDT) X-Google-Smtp-Source: AGHT+IErouSwr0Ky8e8/MaQbNuLif1ywFPzzoQr665H1qa9/dvX2U7VmNNh2rbgXhxXCw0wcqzWK X-Received: by 2002:a05:6a00:1a92:b0:66f:fa65:483 with SMTP id e18-20020a056a001a9200b0066ffa650483mr9370199pfv.0.1692016545271; Mon, 14 Aug 2023 05:35:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1692016545; cv=none; d=google.com; s=arc-20160816; b=u/SaEdl1DzrupbPKhjjL0vC96JF+1GNpuIerQnacbnmgkqCT91OxDUpCGcFijNTVz3 dNaBii6T27HTY8cybexfB0n9NPuxCIwkcX927eKUat+AWHcOdkl2R8FeqeXQrfGYS1WU NqiiuSryhlWF2FDMPa9yWrNW5ShAnSwZSv2Gy8Xk2MpEIM9E99JN01oA8GoaeooZSL+B XDfT3Qjs1kyfTzSIui+nwUiPcqGkOaUnc7uDRxeFoaQw8o0ye1M4kjJc48HmZy4IQpAp yDGbQfYkd6Gxpim4Kvzb5EvdtnwwHPSZpD2X6b3h+qEyCap+jz3Vzw3ucSs2ZY/MrlmD MUcA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:dkim-signature; bh=/kBlXlO3k9TYLm10sfgPBIo4Z29pR8vXrC5WvGNK3gs=; fh=kPcMxYAq1+nRteq6g6aIo4kLdMOqJ3ZMcjoyG5ciSeQ=; b=QR7MhyPS2Iv3CWwmsnS1hWusXuLa7Thx5unMsIcgxiZILVdcuEJucLTOuPE/O+kYkX w45g3PBxQfCnDfJckM+jgJNRty5pIkrVJMN/MuKLM/4AiUpqfBsQkBJ5NXQv0mFqpd13 rNO+VZXzDIXYcj+rML7xMg3g4GIRaIcLMbEocZLOjgw6aghkHqXcZucTd2Y2PGxRS311 lx9IG7dWpER1Vicy7lQ/vK8S9ITlS3emsBqZJD2GtdeGOvRSO85MhVOkG8WNbsKnj9LB 2B4q8BYMFohkUP02BrC7LdvHNdqWqC2bkqqTvKejBIP+T4f/PNnouQNAN/RFWMCOo8TP M5YA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b=c63LSxmF; dkim=neutral (no key) header.i=@suse.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id az1-20020a056a02004100b00564bcae8b64si8337056pgb.846.2023.08.14.05.35.31; Mon, 14 Aug 2023 05:35:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b=c63LSxmF; dkim=neutral (no key) header.i=@suse.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231620AbjHNL51 (ORCPT + 99 others); Mon, 14 Aug 2023 07:57:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233105AbjHNL4s (ORCPT ); Mon, 14 Aug 2023 07:56:48 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 364D2199C for ; Mon, 14 Aug 2023 04:56:32 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 696A5219A5; Mon, 14 Aug 2023 11:55:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692014155; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/kBlXlO3k9TYLm10sfgPBIo4Z29pR8vXrC5WvGNK3gs=; b=c63LSxmFjrWSASG/l9fIfUS+bfD6dRdST4AHcprrFusZUBa2QAvMDJk76lSXLhGU/GMRYf HtP96nCwz/zv4fwIamzzehA7QUu3gp7WBkiGcQFbj9yIOtIrL8XajflWvthSWopo4O33SB vVx1fAfNJT95KdX08rr9pqQ0puTqsZ4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692014155; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/kBlXlO3k9TYLm10sfgPBIo4Z29pR8vXrC5WvGNK3gs=; b=sbS1op/ULOfPB0jtEZxsBjBRKr9m5ijmQIK4zk49jgl4tl0jffnK7xX+93QHB7JmQM32FC 5oe6mXkUYDrZdPBA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 3FE75138EE; Mon, 14 Aug 2023 11:55:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id iCS4DksW2mRnMAAAMHmgww (envelope-from ); Mon, 14 Aug 2023 11:55:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, Takashi Iwai , Lars-Peter Clausen , Mark Brown Subject: [PATCH 21/25] ASoC: dmaengine: Convert to generic PCM copy ops Date: Mon, 14 Aug 2023 13:55:19 +0200 Message-Id: <20230814115523.15279-22-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230814115523.15279-1-tiwai@suse.de> References: <20230814115523.15279-1-tiwai@suse.de> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1774207940869999358 X-GMAIL-MSGID: 1774207940869999358 This patch converts the ASoC dmaenging driver code to use the new unified PCM copy callback. It's a straightforward conversion from *_user() to *_iter() variants. The process callback is still using the direct pointer as of now, but it'll be converted in the next patch. Note that copy_from/to_iter() returns the copied bytes, hence the error condition is inverted from copy_from/to_user(). Cc: Lars-Peter Clausen Cc: Mark Brown Signed-off-by: Takashi Iwai Reviewed-by: Mark Brown --- sound/soc/soc-generic-dmaengine-pcm.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 3b99f619e37e..1a4f000fddb9 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -287,10 +287,10 @@ static snd_pcm_uframes_t dmaengine_pcm_pointer( return snd_dmaengine_pcm_pointer(substream); } -static int dmaengine_copy_user(struct snd_soc_component *component, - struct snd_pcm_substream *substream, - int channel, unsigned long hwoff, - void __user *buf, unsigned long bytes) +static int dmaengine_copy(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + struct iov_iter *buf, unsigned long bytes) { struct snd_pcm_runtime *runtime = substream->runtime; struct dmaengine_pcm *pcm = soc_component_to_pcm(component); @@ -300,19 +300,20 @@ static int dmaengine_copy_user(struct snd_soc_component *component, bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; void *dma_ptr = runtime->dma_area + hwoff + channel * (runtime->dma_bytes / runtime->channels); + void *ptr = (void __force *)iter_iov_addr(buf); if (is_playback) - if (copy_from_user(dma_ptr, buf, bytes)) + if (!copy_from_iter(dma_ptr, bytes, buf)) return -EFAULT; if (process) { - int ret = process(substream, channel, hwoff, (__force void *)buf, bytes); + int ret = process(substream, channel, hwoff, ptr, bytes); if (ret < 0) return ret; } if (!is_playback) - if (copy_to_user(buf, dma_ptr, bytes)) + if (!copy_to_iter(dma_ptr, bytes, buf)) return -EFAULT; return 0; @@ -337,7 +338,7 @@ static const struct snd_soc_component_driver dmaengine_pcm_component_process = { .hw_params = dmaengine_pcm_hw_params, .trigger = dmaengine_pcm_trigger, .pointer = dmaengine_pcm_pointer, - .copy_user = dmaengine_copy_user, + .copy = dmaengine_copy, .pcm_construct = dmaengine_pcm_new, };