Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) client-ip=23.128.96.38;
Message-ID: <5636c840-5385-8d30-0b23-fdee91e90136@amd.com>
Date:   Wed, 22 Nov 2023 00:03:47 +0530
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
 Thunderbird/102.15.1
Subject: Re: [Patch] thunderbolt: Add quirk to reset downstream port
Content-Language: en-US
To:     Greg KH <gregkh@linuxfoundation.org>, Sanath S <Sanath.S@amd.com>
Cc:     andreas.noever@gmail.com, michael.jamet@intel.com,
        mika.westerberg@linux.intel.com, YehezkelShB@gmail.com,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Mario Limonciello <mario.limonciello@amd.com>,
        stable@vger.kernel.org
References: <20231121174701.3922587-1-Sanath.S@amd.com>
 <2023112111-shelf-deeply-6a03@gregkh>
From:   Sanath S <sanaths2@amd.com>
In-Reply-To: <2023112111-shelf-deeply-6a03@gregkh>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?R3VJY1NDYmx4MUREaWtyMlhRRHRTR0NQRHhIWm41bWlxZmpoeGtubldEZFd3?=
 =?utf-8?B?M2hHd0p5elNpdFNiaEhITFpHZHRWQlpZV0J4NDJCWWQ5OVI3Z1RvWkxnUk9K?=
 =?utf-8?B?MG9wZW1ZWEdUNTN5eXNSOURFR2FxbEZWT01vckczNHNiSEhoaDRxUFYxTFh3?=
 =?utf-8?B?RUgzdmNTZVB4SzA0RkdHRXZYVHlIWVAxYzZ2ekVCMUx5NzdmenVNWEJEanhN?=
 =?utf-8?B?bEFGaGt4Z3BjMW9FU0EwY29YS2U3K1ZjTDNZeGkxTk1hcHpRS2U0aHVVME56?=
 =?utf-8?B?YlBpRWJmYUJwN2VYRFRwWUxKSSs4Qnl1RUtVUEFyRWJSOFRqVkkzdllxZU1R?=
 =?utf-8?B?T0ZpaGY4ZEF5NHF2OE9EUTB5WHM3cFlTNE9wREFObmxESnU5ZklFRWpheG9n?=
 =?utf-8?B?OTd0U3NpWC95RFQyUkJ0UG5qTTVFbjMyNmZVRU1wQmFZbWJMS29pQnZRNjRx?=
 =?utf-8?B?U0w5dzE0YzhRcVg1TlRvZDUyMkIvZG95c2Nxd1lTWXE0T2g0REdmeHVUZzdm?=
 =?utf-8?B?RDRReC8yYXV0aGxPWlFweWYyaTRnczNKZjd6THpwSk1tYnJoeXEyc0NVdXZk?=
 =?utf-8?B?ZVM5MC9Zd2xnQ3NiTEF2UHA0aFJQRW1nUHBhQllqT1JSTEJLZitmRy9iSDNY?=
 =?utf-8?B?TnRpRnpuLzhTUk5BMktIY29KOXVPRXpYSTQ0bmE2YnhtWG5ITDREdUtVYS9Z?=
 =?utf-8?B?c3NHMUpacmZaR3V2aHR6elcvc2lQb1VHbjUrZnJOU2xKa3FEZE9SWGFZRTJm?=
 =?utf-8?B?bnFNVStUTU5JNzN6T0dXYmhHcjlMbUQyUzJxVGRkV3VreWFzT2xNVExmaGpq?=
 =?utf-8?B?TUNQKzBPVGRGVkxqaklsRjh3cFNXeXJzeCsrQTlRc2hTM0JRRXRVR2VQRUNX?=
 =?utf-8?B?bGNPQ3FLRlJTeWFnb25ZeFRmNk9oQkx0M1hRMk8vUEwyK3dvUVNMTXF4WHBw?=
 =?utf-8?B?UXlJZmZ1Vk1EV25YVlp6U0RnRGFUTE1Ca1JmcFNLSm0zNjVFRDFORlUzRDVM?=
 =?utf-8?B?a1FLTTIyTGtPOXlYT0ppUndGai9kQ21wSzBWZ3JzVWJhOXcyWUwrTkZhVmxY?=
 =?utf-8?B?MDlsYnRHNFM1dXRNeHBnelNvZE5wZnA3OEJxbXh5ZndyaTNiSlNnUVFyVFJv?=
 =?utf-8?B?MEFUenlVUm1HTmF4QUxCODlGMTJZRW5MY2xzd3lGQmtsU05jV3ZMMmhvUFc4?=
 =?utf-8?B?YXl1QXdWWFpoeEVGUVMrSW14NEhrV3hLUlltc2NwbTg5dTVpMnlSNXJONEt0?=
 =?utf-8?B?b1ZiL3JDeFkyRERCdzZLMWFXK21yL05neUJQWDhkV0w4NUpUMWl5LzF6QWhE?=
 =?utf-8?B?UWI3NlRtWlNtRVZWQ09jU1R1bk5sY1NibWl1UUZKQ2RtdFBRcmx4dWxpUGpl?=
 =?utf-8?B?N1RzT2VNWlRvZ0E0N0NUckJQdmdQQjZXRlJwaXlCRWdvVWZOYWtUNkF4Ni96?=
 =?utf-8?B?Q3E4ekpPbHpXaUNPbTRpRW5FejFGcUwrQmpIc1VXc2RZMy9tUWlUMW9aLy9u?=
 =?utf-8?B?WWpkcGtnaGVBVTIyYVVTMW11VUFzV3VpeU1wQzB5d21pdHB5QkN4bUtydXhQ?=
 =?utf-8?B?VGk2Nm42QjZaN1FZcWZ4TXBId2pGazd5bTZ6YnZnMTY0aWhqTWpkOVNDS1E5?=
 =?utf-8?B?RnZIK292RjYxR09KT1d0WERUTUd0NXZpQStOZEtKV3B6aTZIYS9tRFRVa0xI?=
 =?utf-8?B?eHJsNTFvbzlkZ2I5a2lEWk1KbmlxeDdEVFRESzJJdm16MkxScEcrdFlhSlRL?=
 =?utf-8?B?SUluRW5DWmNrdENpYUZFQ1V6c00yNkYvK2YrK0x5RTJNenpzYXhreGpwSTIw?=
 =?utf-8?B?dVZ2M1pEeHVnWE5tRjI4bFJ2V2J1SXpnZDJybHEveHdENmlLWnZ2OTc1NGhN?=
 =?utf-8?B?RitjYW9xZDdjeHE1MUo4ZWxrWjlRTW0vZ0JPTGk2ZUdLN3VEcTdiaU5XZ05i?=
 =?utf-8?B?akdvNW9pUW9DS2I2ZklvYU56SGhRdithbDdlYkJ2MlNDa0FwWndrKzcxYjk0?=
 =?utf-8?B?dWhYeTdRWlMwazRWdG42TnVNYVBXbm9VU016ZGZUUlN1bGJ0N3EzWG1RNWpw?=
 =?utf-8?B?Rnp4MlRiZ2JBbzFEcWxEY21NRWZSdFhlQVpPckV0aHZpOENtalNvcHkycDVJ?=
 =?utf-8?Q?QzI9B33CcPPPSmfNcTPkDKZOY?=
X-OriginatorOrg: amd.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 35aca5bd-eee6-4e5b-0191-08dbeac06c07
X-MS-Exchange-CrossTenant-AuthSource: MW4PR12MB7016.namprd12.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Nov 2023 18:33:57.1625
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: rv+FeblfqEmP+TQRXHqBgu58h3+bRU0EMWr84MtVWBzcDzjGOWQB4Z7G0EpzXGGEbdTDBjMHOysBw55Qt/BtDw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5758
X-Spam-Status: No, score=-2.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,
	DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,
	T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no
	version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Tue, 21 Nov 2023 10:34:21 -0800 (PST)


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@amd.com>
>> Signed-off-by: Sanath S <Sanath.S@amd.com>
Fixes: e390909ac763("thunderbolt: Add vendor specific NHI quirk for 
auto-clearing interrupt status")
>> Cc: <stable@vger.kernel.org>
> What commit id does this fix?
>
> thanks,
>
> greg k-h
>