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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E15A4C3A5A7 for ; Thu, 8 Dec 2022 05:06:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229580AbiLHFGY (ORCPT ); Thu, 8 Dec 2022 00:06:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229470AbiLHFGW (ORCPT ); Thu, 8 Dec 2022 00:06:22 -0500 X-Greylist: delayed 401 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Wed, 07 Dec 2022 21:06:20 PST Received: from devico.uberspace.de (devico.uberspace.de [185.26.156.185]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02F6E8DBE7 for ; Wed, 7 Dec 2022 21:06:19 -0800 (PST) Received: (qmail 23370 invoked by uid 990); 8 Dec 2022 04:59:37 -0000 Authentication-Results: devico.uberspace.de; auth=pass (plain) From: Leonard Lausen To: Manivannan Sadhasivam , catalin.marinas@arm.com, will@kernel.org Cc: robin.murphy@arm.com, amit.pundir@linaro.org, andersson@kernel.org, quic_sibis@quicinc.com, sumit.semwal@linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam Subject: Re: [PATCH] Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()" In-Reply-To: <20221114110329.68413-1-manivannan.sadhasivam@linaro.org> References: <20221114110329.68413-1-manivannan.sadhasivam@linaro.org> Date: Thu, 08 Dec 2022 04:59:16 +0000 Message-ID: <868rjijxsr.fsf@lausen.nl> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Bar: - X-Rspamd-Report: BAYES_HAM(-1.364397) MIME_GOOD(-0.1) X-Rspamd-Score: -1.464397 Received: from unknown (HELO unkown) (::1) by devico.uberspace.de (Haraka/2.8.28) with ESMTPSA; Thu, 08 Dec 2022 05:59:36 +0100 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Manivannan Sadhasivam writes: > This reverts commit c44094eee32f32f175aadc0efcac449d99b1bbf7. > > As reported by Amit [1], dropping cache invalidation from > arch_dma_prep_coherent() triggers a crash on the Qualcomm SM8250 platform > (most probably on other Qcom platforms too). On sc7180 with c44094ee applied, it does not trigger crash but makes Wifi dysfunctional by preventing initialization of ath10k_snoc. qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284098560 With the revert of c44094ee, wifi works fine again. Thank you Leonard