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=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 40ED1C4320E for ; Mon, 26 Jul 2021 16:08:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2B26F61075 for ; Mon, 26 Jul 2021 16:08:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231889AbhGZP2O (ORCPT ); Mon, 26 Jul 2021 11:28:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:41172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237803AbhGZPZq (ORCPT ); Mon, 26 Jul 2021 11:25:46 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 706D260F5A; Mon, 26 Jul 2021 16:06:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1627315573; bh=Ms46Wuh3lvtd0oUH+Yk/TH1tPXCIs0k2QhqSzkN3W8k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Mu2oJAdGEoWV0ng3Geuuvwav/ov0hy4GEKH3wPv6gDDgfdhBIrkgRF2JdS5iCEvTP 8UZ2S0zxNpDtanhVMRMJMvmPFF1s1pfmlVtfVeFnRVY+FgsNnLeDrYwC2sNCp9NUAf SRaVGUyz42s+3twh4cWYhivwzRAofLbhR942FLaU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alan Young , Takashi Iwai Subject: [PATCH 5.10 114/167] ALSA: pcm: Call substream ack() method upon compat mmap commit Date: Mon, 26 Jul 2021 17:39:07 +0200 Message-Id: <20210726153843.232828350@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210726153839.371771838@linuxfoundation.org> References: <20210726153839.371771838@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alan Young commit 2e2832562c877e6530b8480982d99a4ff90c6777 upstream. If a 32-bit application is being used with a 64-bit kernel and is using the mmap mechanism to write data, then the SNDRV_PCM_IOCTL_SYNC_PTR ioctl results in calling snd_pcm_ioctl_sync_ptr_compat(). Make this use pcm_lib_apply_appl_ptr() so that the substream's ack() method, if defined, is called. The snd_pcm_sync_ptr() function, used in the 64-bit ioctl case, already uses snd_pcm_ioctl_sync_ptr_compat(). Fixes: 9027c4639ef1 ("ALSA: pcm: Call ack() whenever appl_ptr is updated") Signed-off-by: Alan Young Cc: Link: https://lore.kernel.org/r/c441f18c-eb2a-3bdd-299a-696ccca2de9c@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/core/pcm_native.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3062,9 +3062,14 @@ static int snd_pcm_ioctl_sync_ptr_compat boundary = 0x7fffffff; snd_pcm_stream_lock_irq(substream); /* FIXME: we should consider the boundary for the sync from app */ - if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) - control->appl_ptr = scontrol.appl_ptr; - else + if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) { + err = pcm_lib_apply_appl_ptr(substream, + scontrol.appl_ptr); + if (err < 0) { + snd_pcm_stream_unlock_irq(substream); + return err; + } + } else scontrol.appl_ptr = control->appl_ptr % boundary; if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) control->avail_min = scontrol.avail_min;