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[92.176.231.205]) by smtp.gmail.com with ESMTPSA id j14-20020adfe50e000000b0020c6a524fd5sm12998987wrm.99.2022.05.09.07.36.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 May 2022 07:36:54 -0700 (PDT) Message-ID: Date: Mon, 9 May 2022 16:36:53 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH v2] Revert "fbdev: Make fb_release() return -ENODEV if fbdev was unregistered" Content-Language: en-US To: public@timruffing.de Cc: Thomas Zimmermann , Maxime Ripard , Daniel Vetter , Daniel Vetter , Helge Deller , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org References: <642f515e-aa71-7c90-a715-e49dcf12baee@redhat.com> <20220509140149.34734-1-public@timruffing.de> From: Javier Martinez Canillas In-Reply-To: <20220509140149.34734-1-public@timruffing.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Tim, On 5/9/22 16:01, public@timruffing.de wrote: > Thanks for this patch. Do you think this can be backported to LTS 5.17.y and You are welcome. > 5.15.y, which are still buggy? It's not a big deal for me but others might > profit. > > Background: > The patch solves a regression from 5.17.1 to 5.17.2 or 5.15.32 and > 5.15.33 I was about to report. On my Thinkpad T570, I got random "BUG", "Oops" > or even panics when during booting with efifb and plymouthd (and then sometimes > also problems when shutting down because). I had bisected the issue to commit > 27599aacbaef. I could provide more info but I don't think it's necessary given > that either aafa025c76dcc7d1a8c8f0bdefcbe4eb480b2f6a or your better patch now > fixes the issue (I tested both, both work for me). > The patches to fix the fbdev hot-unplug regression will get merged in mainline soon and since all have a Fixes tag, they should get picked for stable as well. -- Best regards, Javier Martinez Canillas Linux Engineering Red Hat