From: Greg KH <gregkh@linuxfoundation.org>
To: "Limonciello, Mario" <Mario.Limonciello@amd.com>
Cc: "stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: USB4 DP tunneling fix for 6.0.y/5.15.y
Date: Fri, 11 Nov 2022 09:53:29 +0100 [thread overview]
Message-ID: <Y24NiS1spQyDbEc0@kroah.com> (raw)
In-Reply-To: <MN0PR12MB610143CD05C1230BBE268FC5E2019@MN0PR12MB6101.namprd12.prod.outlook.com>
On Thu, Nov 10, 2022 at 03:36:30PM +0000, Limonciello, Mario wrote:
> [Public]
>
> Hi,
>
> USB4 DP tunneling has a bug in 6.0.y and 5.15.y that was fixed in 6.1.
> Basically if the Pre-OS connection manager has set up USB4 DP tunnels they're ignored by the OS so you'll have a "working" display in firmware and once the Linux kernel boots up you use lose the display.
> Hot plugging works around the issue.
>
> For 6.0.y can you please take this commit to fix it:
> b60e31bf18a7 ("thunderbolt: Add DP OUT resource when DP tunnel is discovered")
>
> For 5.15.y can you please take these two commits to fix it:
> 43bddb26e20a ("thunderbolt: Tear down existing tunnels when resuming from hibernate")
> b60e31bf18a7 ("thunderbolt: Add DP OUT resource when DP tunnel is discovered")
Now queued up, thanks.
greg k-h
prev parent reply other threads:[~2022-11-11 8:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-10 15:36 USB4 DP tunneling fix for 6.0.y/5.15.y Limonciello, Mario
2022-11-11 8:53 ` Greg KH [this message]
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