From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx5.mail-out.lima-city.de (mx5.mail-out.lima-city.de [91.216.248.207]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8E7432F7F1B for ; Sun, 2 Aug 2026 17:44:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.216.248.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785692646; cv=none; b=a1dUrpoDs5RK6yTs0wIzGG7qoUYxQ6nzEPiyuV2J4XgBwpUv1ZR4TUdUtWaeXICLfHtQ4DWt25kAOt7UjTfS4AYe0cfJC8hAZsVzFmt+YDJRTRuTu3BWU6GLNlp/dz2zFU4YzGjXZoiSUCN+qnL84YM0tpc9L2vEsjvzFHg3Ehw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785692646; c=relaxed/simple; bh=Bp1ae2vgzK/GTp/o1zNw72JgBOAIuy7piWkv6wbaBuk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eLNp8/AFNlqjn57+Ma6UU1+5FVq0SBVpqSxMjkYVpRRkAmj/LkiFxL1ckPOusFpRV3CTewEfj2NWpVcsJyUIb2Qb+caoOc290zckfcdRf/AE//kdXa0Bm4fvLYsi+hyOn8UsAszN3dyJ9Soo+h5vRGCg3T3pwgXOTz6J6LclQGE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=deq.rocks; spf=none smtp.mailfrom=deq.rocks; dkim=pass (2048-bit key) header.d=deq.rocks header.i=@deq.rocks header.b=opU7BuwG; arc=none smtp.client-ip=91.216.248.207 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=deq.rocks Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=deq.rocks Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=deq.rocks header.i=@deq.rocks header.b="opU7BuwG" From: Andre Eikmeyer X-Lima-ML-UUID: 99e3ac60-db84-4541-9b41-19999dceb006 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=deq.rocks; s=securedbylima-20251205; t=1785692634; bh=Bp1ae2vgzK/GTp/o1zNw72JgBOAIuy7piWkv6wbaBuk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=opU7BuwG/xDy83YSNVcTGvfyOBumkoVNZ0c6Wk2zMX336BUEU44MsLBI2jzMeboTI HX2SLMpA4s01hHkIadj1b0gMi/27OQoE+F7y830nWT153Dw38neqPQqTI1AlBiIyG1 ZCR8HXah6bUBYdcm1F/jhQTwdRaD+CzqK+fOw1YuzMHAGIkn1eRlPxNKgCRGeqxd+k olAD2WOp5hmsi8OSj2wZftS7A3iZau6GHaZSiESmL9/xHv29f5MYDYaMzYJ5cs4kqq SWGQ/3RW5VLMjHXjatIy2PLQIApzq81U6CEu/Ofq7q9RP7V9E0nw6cwrjcAA8Ni9z5 hukONJwisK/Ag== To: Mathias Nyman Cc: Andre Eikmeyer , linux-usb@vger.kernel.org Subject: Re: [PATCH] xhci-pci: keep Titan Ridge active on MacBookPro15,1 Date: Sun, 2 Aug 2026 19:43:52 +0200 Message-ID: <20260802174352.13097-1-dev@deq.rocks> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730210655.15514-1-dev@deq.rocks> References: <20260730210655.15514-1-dev@deq.rocks> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hello everyone, Please disregard this patch for now. Further testing indicates that the reported USB hotplug failure may be caused by an initialization/runtime-PM ordering race rather than by the Titan Ridge xHCI controllers being unable to enter D3. Keeping the controllers permanently in D0 avoids the symptom, but also prevents deeper package C-states and increases idle power consumption. We are running additional tests before proposing a more appropriate fix. We will send a revised patch if the race and its correct handling can be confirmed. Thanks, Andre