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[2603:8081:2802:9dfb:e852:d886:7122:8d36]) by smtp.gmail.com with ESMTPSA id m21sm1630542oov.43.2021.07.07.08.48.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Jul 2021 08:48:22 -0700 (PDT) Subject: Re: [PATCH v2] PCI/portdrv: Use link bandwidth notification capability bit From: stuart hayes To: Krzysztof Wilczy??ski , Lukas Wunner , Bjorn Helgaas Cc: linux-pci@vger.kernel.org References: <20210512213314.7778-1-stuart.w.hayes@gmail.com> <20210514130303.GD9537@rocinante.localdomain> <20210514130845.GA26314@wunner.de> <20210514131701.GE9537@rocinante.localdomain> <53c92c86-5fd9-5db4-eacf-954f1f07cecb@gmail.com> Message-ID: <692d2bb1-a4fe-5ba4-8576-761096338775@gmail.com> Date: Wed, 7 Jul 2021 10:48:20 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <53c92c86-5fd9-5db4-eacf-954f1f07cecb@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On 5/26/2021 8:12 PM, stuart hayes wrote: > > > On 5/14/2021 8:17 AM, Krzysztof Wilczy??ski wrote: >> Hi Lukas, >> >> [...] >>>> I was wondering - is this fix connected to an issue filled in Bugzilla >>>> or does it fix a known commit that introduced this problem?  Basically, >>>> I am trying to see whether a "Fixes:" would be in order. >>> >>> The fix is for a driver which has been removed from the tree (for now), >>> including in stable kernels.  The fix will prevent an issue that will >>> occur once the driver is re-introduced (once we've found a way to >>> overcome the issues that led to its removal).  A Fixes tag is thus >>> uncalled for. >> >> Thank you for adding more details.  Much appreciated. >> >> Krzysztof >> > > I made the patch because it was causing the config space for a > downstream port to not get restored when a DPC event occurred, and all > the NVMe drives under it disappeared.  I found that myself, though--I'm > not aware of anyone else reporting the issue. Any chance this might get accepted? I'm not sure if it just got forgotten, or if there's a problem with it. Thanks! --Stuart