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From: Greg KH <gregkh@linuxfoundation.org>
To: Mario Limonciello <mario.limonciello@amd.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>,
	linux-usb@vger.kernel.org,
	Andreas Noever <andreas.noever@gmail.com>,
	Michael Jamet <michael.jamet@intel.com>,
	Yehezkel Bernat <YehezkelShB@gmail.com>,
	sanju.mehta@amd.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] Fix some hotplug event issues
Date: Wed, 21 Sep 2022 17:45:09 +0200	[thread overview]
Message-ID: <YysxhSh73nwMC1Kb@kroah.com> (raw)
In-Reply-To: <20220921145434.21659-1-mario.limonciello@amd.com>

On Wed, Sep 21, 2022 at 09:54:31AM -0500, Mario Limonciello wrote:
> On AMD Pink Sardine it's been observed that if another CM has run before
> the Linux CM that some registers may not match expectations which leads
> to a non-functional hotplug for PCIe devices.
> 
> Explicitly set these registers that have been observed to cause problems
> with hotplug to the defaults of the USB4 spec.
> 
> Mario Limonciello (2):
>   thunderbolt: Explicitly reset plug events delay back to USB4 spec
>     value
>   thunderbolt: Explicitly enable lane adapter hotplug events at startup
> 
>  drivers/thunderbolt/switch.c  |  5 +++++
>  drivers/thunderbolt/tb.h      |  1 +
>  drivers/thunderbolt/tb_regs.h |  1 +
>  drivers/thunderbolt/usb4.c    | 19 +++++++++++++++++++
>  4 files changed, 26 insertions(+)

Any specific reason these were not tagged for stable backports?

thanks,

greg k-h

  parent reply	other threads:[~2022-09-21 15:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-21 14:54 [PATCH 0/2] Fix some hotplug event issues Mario Limonciello
2022-09-21 14:54 ` [PATCH 1/2] thunderbolt: Explicitly reset plug events delay back to USB4 spec value Mario Limonciello
2022-09-21 14:54 ` [PATCH 2/2] thunderbolt: Explicitly enable lane adapter hotplug events at startup Mario Limonciello
2022-09-22 11:30   ` Mika Westerberg
2022-09-21 15:45 ` Greg KH [this message]
2022-09-21 15:48   ` [PATCH 0/2] Fix some hotplug event issues Limonciello, Mario
2022-09-22 11:34     ` Mika Westerberg

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