linux-kernel - Re: [Patch] thunderbolt: Add quirk to reset downstream port

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Message-ID: <5636c840-5385-8d30-0b23-fdee91e90136@amd.com>
Date:   Wed, 22 Nov 2023 00:03:47 +0530
From:   Sanath S <sanaths2@....com>
To:     Greg KH <gregkh@...uxfoundation.org>, Sanath S <Sanath.S@....com>
Cc:     andreas.noever@...il.com, michael.jamet@...el.com,
        mika.westerberg@...ux.intel.com, YehezkelShB@...il.com,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mario Limonciello <mario.limonciello@....com>,
        stable@...r.kernel.org
Subject: Re: [Patch] thunderbolt: Add quirk to reset downstream port


On 11/21/2023 11:34 PM, Greg KH wrote:
> On Tue, Nov 21, 2023 at 11:17:01PM +0530, Sanath S wrote:
>> Boot firmware on AMD's Yellow Carp and Pink Sardine allocates
>> very minimal buses for PCIe downstream ports. This results in
>> failure to extend the daisy chain.
>>
>> Add quirk to reset the downstream port to help reset the topology
>> created by boot firmware.
>>
>> Suggested-by: Mario Limonciello <mario.limonciello@....com>
>> Signed-off-by: Sanath S <Sanath.S@....com>
Fixes: e390909ac763("thunderbolt: Add vendor specific NHI quirk for 
auto-clearing interrupt status")
>> Cc: <stable@...r.kernel.org>
> What commit id does this fix?
>
> thanks,
>
> greg k-h
>