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[92.176.231.205]) by smtp.gmail.com with ESMTPSA id f20-20020a05600c155400b0039c41686421sm17712919wmg.17.2022.07.04.04.04.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 Jul 2022 04:04:23 -0700 (PDT) Message-ID: Date: Mon, 4 Jul 2022 13:04:21 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH v6 3/5] fbdev: Disable sysfb device registration when removing conflicting FBs Content-Language: en-US To: Xi Ruoyao , 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" 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> <61f2e4e2af40cb9d853504d0a6fe01829ff8ca60.camel@linuxfromscratch.org> From: Javier Martinez Canillas In-Reply-To: <61f2e4e2af40cb9d853504d0a6fe01829ff8ca60.camel@linuxfromscratch.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Hello Xi, On 7/4/22 12:29, Xi Ruoyao wrote: > On Mon, 2022-07-04 at 17:36 +0800, Xi Ruoyao wrote: > >>> Yes, please do. Either with CONFIG_SYSFB_SIMPLEFB disabled and CONFIG_FB_EFI >>> enabled (so that "efi-framebuffer" is registered and efifb probed) or with >>> CONFIG_SYSFB_SIMPLEFB but CONFIG_FB_SIMPLE enabled (so "simple-framebuffer >>> is used too but with simplefb instead of simpledrm). >>>   >>> I'm not able to reproduce, it would be useful to have another data point. >> >> Also happening for me with CONFIG_SYSFB_SIMPLEFB, on a Intel Core i7- >> 1065G7 (with iGPU). >> >> 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. > Yes, we need to also cherry-pick b84efa28a48 ("drm/aperture: Run fbdev removal before internal helpers") now that the sysfb_disable() patches are in v5.19-rc5. -- Best regards, Javier Martinez Canillas Linux Engineering Red Hat