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 32927C433EF for ; Mon, 4 Jul 2022 10:29:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233440AbiGDK3o (ORCPT ); Mon, 4 Jul 2022 06:29:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233588AbiGDK3m (ORCPT ); Mon, 4 Jul 2022 06:29:42 -0400 Received: from smtp2.tsag.net (smtp2.tsag.net [208.118.68.91]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E93C526EF; Mon, 4 Jul 2022 03:29:41 -0700 (PDT) Received: from linuxfromscratch.org (rivendell.linuxfromscratch.org [208.118.68.85]) (user=smtprelay@linuxfromscratch.org mech=PLAIN bits=0) by smtp2.tsag.net with ESMTP id 264ATNkm015395-264ATNko015395 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 4 Jul 2022 04:29:23 -0600 Received: from [192.168.124.21] (unknown [113.140.29.6]) by linuxfromscratch.org (Postfix) with ESMTPSA id 818531C337B; Mon, 4 Jul 2022 10:29:18 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfromscratch.org; s=cert4; t=1656930563; bh=7SlvoAQAjYIET8FUv/TvZB/zr4/2kz6Ntmih+ixegRU=; h=Subject:From:To:Cc:Date:In-Reply-To:References; b=Rs2RuGSRH+CHTLOWW5eDWDfS/3EN8u+a1+sbyEtoHwdTImGUqeS3N5SdZ1XVh9QkH nS8z6ia/k27GR5pTeFY2RzigZX0NZgtL+EMR1BKvf9wqN0G5jOgTy8gVR2MhONDCDj URBUO4UY/z8WWpCQwnHM7s3DOrmEqV9N9WoLGFqM9QiPrPUrVB0+zjolP5Uv/ObMZE 7SML8FxBKkY7dqpCEbUrYOx8c6WKSY/TXAUgOc+VG0wr0dcKmS4TiE4H0Foh7/jw3m bGjmyvfZVx8NLiatbmx7CjueUftxyrgSrpOqhO6cWdEHi1+HBLcmjdL8TBKyLNODCa QXBAl5bxWhMQQ== Message-ID: <61f2e4e2af40cb9d853504d0a6fe01829ff8ca60.camel@linuxfromscratch.org> Subject: Re: [PATCH v6 3/5] fbdev: Disable sysfb device registration when removing conflicting FBs From: Xi Ruoyao To: Javier Martinez Canillas , Zack Rusin , "linux-kernel@vger.kernel.org" Cc: "linux-fbdev@vger.kernel.org" , "kvm@vger.kernel.org" , "gregkh@linuxfoundation.org" , "deller@gmx.de" , "dri-devel@lists.freedesktop.org" , "alex.williamson@redhat.com" , Linux-graphics-maintainer , "kraxel@redhat.com" , "tzimmermann@suse.de" , "daniel.vetter@ffwll.ch" , "lersek@redhat.com" Date: Mon, 04 Jul 2022 18:29:00 +0800 In-Reply-To: <64c753c98488a64b470009e45769ceab29fd8130.camel@linuxfromscratch.org> References: <20220607182338.344270-1-javierm@redhat.com> <20220607182338.344270-4-javierm@redhat.com> <38473dcd-0666-67b9-28bd-afa2d0ce434a@redhat.com> <603e3613b9b8ff7815b63f294510d417b5b12937.camel@vmware.com> <97565fb5-cf7f-5991-6fb3-db96fe239ee8@redhat.com> <711c88299ef41afd8556132b7c1dcb75ee7e6117.camel@vmware.com> <64c753c98488a64b470009e45769ceab29fd8130.camel@linuxfromscratch.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.3 MIME-Version: 1.0 X-FEAS-Auth-User: smtprelay@linuxfromscratch.org X-FEAS-DKIM: Valid Authentication-Results: smtp2.tsag.net; dkim=pass header.i=@linuxfromscratch.org; dmarc=pass header.from=linuxfromscratch.org X-FE-Policy-ID: 0:14:3:linuxfromscratch.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org On Mon, 2022-07-04 at 17:36 +0800, Xi Ruoyao wrote: > > Yes, please do. Either with CONFIG_SYSFB_SIMPLEFB disabled and CONFIG_F= B_EFI > > enabled (so that "efi-framebuffer" is registered and efifb probed) or w= ith > > CONFIG_SYSFB_SIMPLEFB but CONFIG_FB_SIMPLE enabled (so "simple-framebuf= fer > > is used too but with simplefb instead of simpledrm). > > =C2=A0 > > I'm not able to reproduce, it would be useful to have another data poin= t. >=20 > Also happening for me with CONFIG_SYSFB_SIMPLEFB, on a Intel Core i7- > 1065G7 (with iGPU). >=20 > Reverting this commit on top of 5.19-rc5 "fixes" the issue. With CONFIG_SYSFB_SIMPLEFB and CONFIG_FB_SIMPLE enabled, there is no issue. I guess it's something going wrong on a "drm -> drm" pass over. For now I'll continue to use simpledrm with this commit reverted.