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From: Greg KH <gregkh@linuxfoundation.org>
To: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: linux-usb@vger.kernel.org,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: Re: [PATCH 4/4] xhci-pci: Allow host runtime PM as default also for Intel Ice Lake xHCI
Date: Sat, 16 Nov 2019 10:25:52 +0100	[thread overview]
Message-ID: <20191116092552.GA390155@kroah.com> (raw)
In-Reply-To: <1573836603-10871-5-git-send-email-mathias.nyman@linux.intel.com>

On Fri, Nov 15, 2019 at 06:50:03PM +0200, Mathias Nyman wrote:
> From: Mika Westerberg <mika.westerberg@linux.intel.com>
> 
> Intel Ice Lake has two xHCI controllers one on PCH and the other as part
> of the CPU itself. The latter is also part of the so called Type C
> Subsystem (TCSS) sharing ACPI power resources with the PCIe root ports
> and the Thunderbolt controllers. In order to put the whole TCSS block
> into D3cold the xHCI needs to be runtime suspended as well when idle.
> 
> For this reason allow runtime PM as default for Ice Lake TCSS xHCI
> controller.
> 
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
> ---
>  drivers/usb/host/xhci-pci.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Can this also be queued up for the stable tree (or at least for 5.4.y?)

thanks,

greg k-h

  reply	other threads:[~2019-11-16  9:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-15 16:49 [PATCH 0/4] xhci features for usb-next Mathias Nyman
2019-11-15 16:50 ` [PATCH 1/4] usb: host: xhci: update event ring dequeue pointer on purpose Mathias Nyman
2019-11-15 16:50 ` [PATCH 2/4] xhci: Add tracing for xhci doorbell register writes Mathias Nyman
2019-11-15 16:50 ` [PATCH 3/4] usb: host: xhci: Support running urb giveback in tasklet context Mathias Nyman
2019-11-15 16:50 ` [PATCH 4/4] xhci-pci: Allow host runtime PM as default also for Intel Ice Lake xHCI Mathias Nyman
2019-11-16  9:25   ` Greg KH [this message]
2019-11-18  9:15     ` Mathias Nyman
2019-11-18  9:22       ` Greg KH

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