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[80.56.215.227]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c4d3569fa54sm134100066b.58.2026.11.06.23.23.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 Nov 2026 23:23:11 -0800 (PST) From: Arend van Spriel To: =?UTF-8?B?QW5kcsOpIEVpa21leWVy?= CC: , , , , , , , , , , , , , , , , Date: Sat, 07 Nov 2026 08:23:10 +0100 Message-ID: <1a1b4e3cb30.2873.9b12b7fc0a3841636cfb5e919b41b954@broadcom.com> In-Reply-To: <20261106191826.4ddb997a@kait2en-mbp15-1> References: <20261106153612.2aadef2a@kait2en-mbp15-1> <1a1b1ef4b20.2873.9b12b7fc0a3841636cfb5e919b41b954@broadcom.com> <20261106191826.4ddb997a@kait2en-mbp15-1> User-Agent: AquaMail/2.8.1 (build: 200801029) Subject: Re: [PATCH 05/13] wifi: brcmfmac: Negotiate PCIe mailbox transport with firmware X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="UTF-8" Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Op 6 november 2026 19:18:32 schreef André Eikmeyer : > On Fri, 06 Nov 2026 18:36:52 +0100 > Arend van Spriel wrote: > >> Sorry, you lost me there. What is the relation between the patch in >> this subject and D3 ack. > > Hi Arend, > > D3_INFORM and D3_ACK are mailbox messages, and 05 changes how they are > exchanged. Without 05 brcmfmac writes D3_INFORM to the TCM mailbox > and our cursed Apple 4377 firmware on the 9,1 doesn't read it. > > That is why I mentioned the D3 ACK timeout handling patch. I > submitted that because I was sure the firmware wouldn't send it. > But actually the transport was broken. > > https://lore.kernel.org/all/20261001085308.1688049-1-dev@deq.rocks/ > > which was superseded by Sebastian's patch here: > > https://lore.kernel.org/linux-wireless/20260915-brcmfmac-bcm43752-suspend-fix-v2-1-1bd84914998b@collabora.com/ > > So probably for addressing Sebastian's issue this needs to stay > anyways. My memory served me wrong. I just read that his device is not > an Apple product, but his patch incidentally worked around the same > problem. Sorry if i was causing unneccessary noise. No problem. Thanks for helping me unclutter my head. Regards, Arend >