From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from so254-9.mailgun.net (so254-9.mailgun.net [198.61.254.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 29C1B70 for ; Thu, 20 May 2021 17:38:18 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1621532302; h=Message-ID: References: In-Reply-To: Reply-To: Subject: Cc: To: From: Date: Content-Transfer-Encoding: Content-Type: MIME-Version: Sender; bh=nLriIgWHIbCb7oQKXFd+r7F47RE5SfPuCnd0RQSTbk8=; b=Vt48SYA/raCifyAu5etFMYO1NXztXM3vsIRRXA9cvObokjikF8jhmMZHV6/Eni9JcutsyoRu noFgmiUuYAOdW/Jt6PJvK0P9guL8QELllwZzWWieZ667em3CyJ9QM+wUSX9hcy9hZFdnzIa3 mPK17ihua6BNK18QXYhHmfyBiPY= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI0YzJmNCIsICJyZWdyZXNzaW9uc0BsaXN0cy5saW51eC5kZXYiLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-west-2.postgun.com with SMTP id 60a69e865f788b52a5b7131d (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 20 May 2021 17:38:14 GMT Sender: bbhatt=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B0715C43460; Thu, 20 May 2021 17:38:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: bbhatt) by smtp.codeaurora.org (Postfix) with ESMTPSA id A3CF6C433D3; Thu, 20 May 2021 17:38:12 +0000 (UTC) X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Thu, 20 May 2021 10:38:12 -0700 From: Bhaumik Bhatt To: Kalle Valo , Manivannan Sadhasivam , Greg KH Cc: Loic Poulain , ath11k@lists.infradead.org, linux-wireless@vger.kernel.org, regressions@lists.linux.dev, stable@vger.kernel.org Subject: Re: [regressions] ath11k: v5.12.3 mhi regression Organization: Qualcomm Innovation Center, Inc. Reply-To: bbhatt@codeaurora.org Mail-Reply-To: bbhatt@codeaurora.org In-Reply-To: <87r1i1h9an.fsf@codeaurora.org> References: <87v97dhh2u.fsf@codeaurora.org> <20210520104313.GA128703@thinkpad> <87r1i1h9an.fsf@codeaurora.org> Message-ID: <3e8bac3b02e3549a55b7c9b78b699965@codeaurora.org> X-Sender: bbhatt@codeaurora.org User-Agent: Roundcube Webmail/1.3.9 On 2021-05-20 05:36 AM, Kalle Valo wrote: > Manivannan Sadhasivam writes: > >> On Thu, May 20, 2021 at 12:02:40PM +0200, Greg KH wrote: >>> On Thu, May 20, 2021 at 12:47:53PM +0300, Kalle Valo wrote: >>> > Hi, >>> > >>> > I got several reports that this mhi commit broke ath11k in v5.12.3: >>> > >>> > commit 29b9829718c5e9bd68fc1c652f5e0ba9b9a64fed >>> > Author: Bhaumik Bhatt >>> > Date: Wed Feb 24 15:23:04 2021 -0800 >>> > >>> > bus: mhi: core: Process execution environment changes serially >>> > >>> > [ Upstream commit ef2126c4e2ea2b92f543fae00a2a0332e4573c48 ] >>> > >>> > Here are the reports: >>> > >>> > https://bugzilla.kernel.org/show_bug.cgi?id=213055 >>> > >>> > https://bugzilla.kernel.org/show_bug.cgi?id=212187 >>> > >>> > https://bugs.archlinux.org/task/70849?project=1&string=linux >>> > >>> > Interestingly v5.13-rc1 seems to work fine, at least for me, though I >>> > have not tested v5.12.3 myself. Can someone revert this commit in the >>> > stable release so that people get their wifi working again, please? >>> >>> How does the mhi bus code relate to a ath11k driver? What bus is >>> that >>> on? >>> >> >> MHI is the transport used by the ath11k driver to work with the WLAN >> devices >> over PCIe. >> >> Regarding the bug, I'd suggest to wait for Bhaumik (the author of >> 29b9829718c5) >> to comment on the possible commit which needs backporting from >> mainline. > > Ok, but if a quick fix is not available I think we should just revert > this in the stable releases. I also got a report that v5.11.21 is > broken: > > https://bugzilla.kernel.org/show_bug.cgi?id=213055#c11 Please pick [1] as the dependency to [ Upstream commit ef2126c4e2ea2b92f543fae00a2a0332e4573c48 ]. That is missing in older kernels and did not get backported. This explains why 5.13.x works. Thanks, Bhaumik --- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/bus/mhi/core?h=v5.13-rc2&id=4884362f6977fc05cbec736625665241c0e0732f