From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m43-7.mailgun.net (m43-7.mailgun.net [69.72.43.7]) (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 33E2971 for ; Thu, 20 May 2021 12:36:09 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1621514169; h=Content-Type: MIME-Version: Message-ID: In-Reply-To: Date: References: Subject: Cc: To: From: Sender; bh=TpLmLahd2h7hQJJWsFxm53pPM8fVoixMAUaW1DdjRfU=; b=lJnpaVH2G3YeYRAb7E9b9nOUVNUV7RI0qoKEcjtFuTMPm7yTcjpOQcpa4GcfodFUTC5t3huW +dsVTngxOUzULXhZy/UBDZPCFjE2JqqQtdXHlH3CQbX7wxhqNKxhhV0w3pVVuDI37NHywDU0 /DSnETLa+RH0CfCqphVAWxfyZbA= X-Mailgun-Sending-Ip: 69.72.43.7 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-n03.prod.us-east-1.postgun.com with SMTP id 60a657b6d1aee7698da9f585 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 20 May 2021 12:36:06 GMT Sender: kvalo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id CAF7FC433F1; Thu, 20 May 2021 12:36:05 +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,SPF_FAIL autolearn=no autolearn_force=no version=3.4.0 Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kvalo) by smtp.codeaurora.org (Postfix) with ESMTPSA id D7A4AC433F1; Thu, 20 May 2021 12:36:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D7A4AC433F1 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=kvalo@codeaurora.org From: Kalle Valo To: Manivannan Sadhasivam Cc: Greg KH , Bhaumik Bhatt , 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 References: <87v97dhh2u.fsf@codeaurora.org> <20210520104313.GA128703@thinkpad> Date: Thu, 20 May 2021 15:36:00 +0300 In-Reply-To: <20210520104313.GA128703@thinkpad> (Manivannan Sadhasivam's message of "Thu, 20 May 2021 16:13:13 +0530") Message-ID: <87r1i1h9an.fsf@codeaurora.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain 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 -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches