From: Dirk Gouders <dirk@gouders.net>
To: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: <gregkh@linuxfoundation.org>, <linux-usb@vger.kernel.org>,
Niklas Neronin <niklas.neronin@linux.intel.com>,
Nick Nielsen <nick.kainielsen@free.fr>, grm1 <grm1@mailbox.org>
Subject: Re: [PATCH 3/6] usb: xhci-pci: add support for hosts with zero USB3 ports
Date: Wed, 22 Oct 2025 22:25:30 +0200 [thread overview]
Message-ID: <ghwm4msmyt.fsf@gouders.net> (raw)
In-Reply-To: <20250917210726.97100-4-mathias.nyman@linux.intel.com> (Mathias Nyman's message of "Thu, 18 Sep 2025 00:07:22 +0300")
Mathias Nyman <mathias.nyman@linux.intel.com> writes:
> From: Niklas Neronin <niklas.neronin@linux.intel.com>
>
> Add xhci support for PCI hosts that have zero USB3 ports.
> Avoid creating a shared Host Controller Driver (HCD) when there is only
> one root hub. Additionally, all references to 'xhci->shared_hcd' are now
> checked before use.
>
> Only xhci-pci.c requires modification to accommodate this change, as the
> xhci core already supports configurations with zero USB3 ports. This
> capability was introduced when xHCI Platform and MediaTek added support
> for zero USB3 ports.
>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220181
> Tested-by: Nick Nielsen <nick.kainielsen@free.fr>
> Tested-by: grm1 <grm1@mailbox.org>
> Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
I noticed that on my notebook (Lenovo ThinkPad L14 Gen 5, model
21L5CTO1WW) the integrated camera is no longer detected.
Bisecting this problem (in Linus' tree) led me to this commit.
I'm unsure what further information might be useful,
please let me know what else is needed.
Regards,
Dirk
next prev parent reply other threads:[~2025-10-22 20:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-17 21:07 [PATCH 0/6] xhci features for usb-next Mathias Nyman
2025-09-17 21:07 ` [PATCH 1/6] Revert "usb: xhci: Avoid Stop Endpoint retry loop if the endpoint seems Running" Mathias Nyman
2025-09-17 21:07 ` [PATCH 2/6] usb: xhci: Update a comment about Stop Endpoint retries Mathias Nyman
2025-09-17 21:07 ` [PATCH 3/6] usb: xhci-pci: add support for hosts with zero USB3 ports Mathias Nyman
2025-10-22 20:25 ` Dirk Gouders [this message]
2025-10-22 21:34 ` Michal Pecio
2025-10-23 5:13 ` Dirk Gouders
2025-09-17 21:07 ` [PATCH 4/6] usb: xhci: improve TR Dequeue Pointer mask Mathias Nyman
2025-09-17 21:07 ` [PATCH 5/6] usb: xhci: correct indentation for PORTSC tracing function Mathias Nyman
2025-09-17 21:07 ` [PATCH 6/6] usb: xhci: align PORTSC trace with one-based port numbering Mathias Nyman
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