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Mon, 22 Dec 2025 09:02:31 -0800 (PST) X-Google-Smtp-Source: AGHT+IHhxvYwCBLtPVF5mS7w3vV1awrjYvqTGweCD6BTnP0tnreJxB27rzmNxHnp8YPmNFLzmV8T+A== X-Received: by 2002:a17:90b:3844:b0:33e:2d0f:479b with SMTP id 98e67ed59e1d1-34e9213011amr10256154a91.6.1766422950785; Mon, 22 Dec 2025 09:02:30 -0800 (PST) Received: from [192.168.1.102] ([120.60.139.28]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-34e70d4f887sm13636763a91.3.2025.12.22.09.02.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Dec 2025 09:02:30 -0800 (PST) From: Manivannan Sadhasivam X-Google-Original-From: Manivannan Sadhasivam To: Jingoo Han , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Heiko Stuebner , Niklas Cassel Cc: Shawn Lin , FUKAUMI Naoki , Krishna chaitanya chundru , Damien Le Moal , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-arm-msm@vger.kernel.org In-Reply-To: <20251222064207.3246632-8-cassel@kernel.org> References: <20251222064207.3246632-8-cassel@kernel.org> Subject: Re: [PATCH v2 0/6] PCI: dwc: Revert Link Up IRQ support Message-Id: <176642294649.11053.7692165747212741983.b4-ty@kernel.org> Date: Mon, 22 Dec 2025 22:32:26 +0530 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjIyMDE1NiBTYWx0ZWRfXxy83jB5mlszM 7vYYKXWk9CToM3aM6P8BbzWqBFl+KdsTv2pmYzt/rZrX8D77jy31fwYbgtTw7nnGkA8U74tPyZg 69WJubDMQARIfrJgQUgICWtQBUDtCDBMAd6nqjo/xgotX8THr85I6SStC7cGtw8MpNQLQSL1Chp DO9iPCso2ie69OF0CtWfwqhfFasBWxRcz/ti0o/dOfxtQa2QufHvcrGFFyvzn62KJimIo+on6xa +1SCwScZxG/f/8O8kBCpbaW+Vq4o2Ms3HovS9L42mKA/o+gQtrhnCnF9P3OcsyWqieb8DIyIE/v c4XRX6MHAeCKl+9SDOfZ1cOBheH5I/P3TlxulUEGGXxR4Odu2JgoNAN9Gav+upD4wI4SOHPEJOU yJpYSaRbEZKFc1xzCq0ujeoAwo47PcmjxqmcdGASdcVmtc7kd9BnF6OYzlt3e5iDQ0FfglDG3MQ 8lzJ7THgi/98fL/0ZLA== X-Proofpoint-GUID: 6LYMnsapHzf-iE2D9DUIGuydiOGnka6V X-Proofpoint-ORIG-GUID: 6LYMnsapHzf-iE2D9DUIGuydiOGnka6V X-Authority-Analysis: v=2.4 cv=T/eBjvKQ c=1 sm=1 tr=0 ts=694979aa cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=wbxd9xFQoh2bOL7BUxlcyw==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=875CWLFNMCvb7f9f5gwA:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-22_02,2025-12-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 bulkscore=0 clxscore=1015 suspectscore=0 malwarescore=0 adultscore=0 phishscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512220156 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251222_090236_217121_2E78911E X-CRM114-Status: GOOD ( 13.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 22 Dec 2025 07:42:07 +0100, Niklas Cassel wrote: > Revert all patches related to pcie-designware Root Complex Link Up IRQ > support. > > While this fake hotplugging was a nice idea, it has shown that this feature > does not handle PCIe switches correctly: > pci_bus 0004:43: busn_res: can not insert [bus 43-41] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci_bus 0004:43: busn_res: [bus 43-41] end is updated to 43 > pci_bus 0004:43: busn_res: can not insert [bus 43] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci 0004:42:00.0: devices behind bridge are unusable because [bus 43] cannot be assigned for them > pci_bus 0004:44: busn_res: can not insert [bus 44-41] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci_bus 0004:44: busn_res: [bus 44-41] end is updated to 44 > pci_bus 0004:44: busn_res: can not insert [bus 44] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci 0004:42:02.0: devices behind bridge are unusable because [bus 44] cannot be assigned for them > pci_bus 0004:45: busn_res: can not insert [bus 45-41] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci_bus 0004:45: busn_res: [bus 45-41] end is updated to 45 > pci_bus 0004:45: busn_res: can not insert [bus 45] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci 0004:42:06.0: devices behind bridge are unusable because [bus 45] cannot be assigned for them > pci_bus 0004:46: busn_res: can not insert [bus 46-41] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci_bus 0004:46: busn_res: [bus 46-41] end is updated to 46 > pci_bus 0004:46: busn_res: can not insert [bus 46] under [bus 42-41] (conflicts with (null) [bus 42-41]) > pci 0004:42:0e.0: devices behind bridge are unusable because [bus 46] cannot be assigned for them > pci_bus 0004:42: busn_res: [bus 42-41] end is updated to 46 > pci_bus 0004:42: busn_res: can not insert [bus 42-46] under [bus 41] (conflicts with (null) [bus 41]) > pci 0004:41:00.0: devices behind bridge are unusable because [bus 42-46] cannot be assigned for them > pcieport 0004:40:00.0: bridge has subordinate 41 but max busn 46 > > [...] Applied, thanks! [1/6] Revert "PCI: dw-rockchip: Don't wait for link since we can detect Link Up" commit: fc6298086bfacaa7003b0bd1da4e4f42b29f7d77 [2/6] Revert "PCI: dw-rockchip: Enumerate endpoints based on dll_link_up IRQ" commit: 180c3cfe36786d261a55da52a161f9e279b19a6f [3/6] Revert "PCI: qcom: Don't wait for link if we can detect Link Up" commit: e9ce5b3804436301ab343bc14203a4c14b336d1b [4/6] Revert "PCI: qcom: Enable MSI interrupts together with Link up if 'Global IRQ' is supported" commit: 7ebdefb87942073679e56cfbc5a72e8fc5441bfc [5/6] Revert "PCI: qcom: Enumerate endpoints based on Link up event in 'global_irq' interrupt" commit: 9a9793b55854422652ea92625e48277c4651c0fd [6/6] Revert "PCI: dwc: Don't wait for link up if driver can detect Link Up event" commit: 142d5869f6eec3110adda0ad2d931f5b3c22371d Best regards, -- Manivannan Sadhasivam