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From: Andre Eikmeyer <dev@deq.rocks>
To: Mathias Nyman <mathias.nyman@intel.com>
Cc: Andre Eikmeyer <dev@deq.rocks>, 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	[thread overview]
Message-ID: <20260802174352.13097-1-dev@deq.rocks> (raw)
In-Reply-To: <20260730210655.15514-1-dev@deq.rocks>

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

      reply	other threads:[~2026-08-02 17:44 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-30 21:06 [PATCH] xhci-pci: keep Titan Ridge active on MacBookPro15,1 Andre Eikmeyer
2026-08-02 17:43 ` Andre Eikmeyer [this message]

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