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=-6.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 A2B72C4338F for ; Sat, 7 Aug 2021 08:16:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73F8861164 for ; Sat, 7 Aug 2021 08:16:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231509AbhHGIRI (ORCPT ); Sat, 7 Aug 2021 04:17:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:43820 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231376AbhHGIRI (ORCPT ); Sat, 7 Aug 2021 04:17:08 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id ADF6460F59; Sat, 7 Aug 2021 08:16:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1628324210; bh=d7H3u7cqpnsZ9Xce5y7GvurT2XWmylBa5mXCyE1ePvQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=GLjNarE2CCrxFP5ZVjcAo7+4fyzNmsFTceG6YzX+7Y0OCpbHZzu4T5WAzxHq6EWfG NZf2UaSTpxVWNALNF1Nf73bPqxwaWYK7tAOdmV7QoaMWcEB7vayxy7vaLdk6Iq12gC tF+LQ0eEDfsc4gQ6eRPP4hPs17cfS1mmR7/wo2LE= Date: Sat, 7 Aug 2021 10:16:47 +0200 From: Greg KH To: Takashi Iwai , Jeff Woods Cc: alsa-devel@alsa-project.org, stable , regressions Subject: Re: Kernel 5.13.6 breaks mmap with snd-hdsp module Message-ID: References: <17b1f9647ee.1179b6a05461889.5940365952430364689@fnordco.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <17b1f9647ee.1179b6a05461889.5940365952430364689@fnordco.com> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Sat, Aug 07, 2021 at 12:49:07AM -0700, Jeff Woods wrote: > Specifically, commit c4824ae7db418aee6f50f308a20b832e58e997fd triggers the problem. Reverting this change restores functionality. > > The device is an RME Multiface II, using the snd-hdsp driver. > > Expected behavior: Device plays sound normally > > Exhibited behavior: When a program attempts to open the device, the following ALSA lib error happens: > > ALSA lib pcm_direct.c:1169:(snd1_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved access > > This change hasn't affected my other computers with less esoteric hardware, so probably the problem lies with the snd-hdsp driver, but the device is unusable without reverting that commit. > > I am available to test any patches for this issue. Have you notified the developers involved in this change about this issue? Adding them now... thanks, greg k-h