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{
    "id": 2175533,
    "url": "http://patchwork.ozlabs.org/api/1.0/patches/2175533/?format=api",
    "project": {
        "id": 28,
        "url": "http://patchwork.ozlabs.org/api/1.0/projects/28/?format=api",
        "name": "Linux PCI development",
        "link_name": "linux-pci",
        "list_id": "linux-pci.vger.kernel.org",
        "list_email": "linux-pci@vger.kernel.org",
        "web_url": null,
        "scm_url": null,
        "webscm_url": null
    },
    "msgid": "<20251218-pci-dwc-suspend-rework-v2-1-5a7778c6094a@oss.qualcomm.com>",
    "date": "2025-12-18T12:04:52",
    "name": "[v2,1/2] PCI: dwc: Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if link is not up",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "07f0b045021b2703486f3a93c765805f27b6b2e8",
    "submitter": {
        "id": 91277,
        "url": "http://patchwork.ozlabs.org/api/1.0/people/91277/?format=api",
        "name": "Manivannan Sadhasivam via B4 Relay",
        "email": "devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20251218-pci-dwc-suspend-rework-v2-1-5a7778c6094a@oss.qualcomm.com/mbox/",
    "series": [
        {
            "id": 485835,
            "url": "http://patchwork.ozlabs.org/api/1.0/series/485835/?format=api",
            "date": "2025-12-18T12:04:51",
            "name": "PCI: dwc: Suspend/resume rework",
            "version": 2,
            "mbox": "http://patchwork.ozlabs.org/series/485835/mbox/"
        }
    ],
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2175533/checks/",
    "tags": {},
    "headers": {
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        "From": "Manivannan Sadhasivam via B4 Relay\n <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>",
        "Date": "Thu, 18 Dec 2025 17:34:52 +0530",
        "Subject": "[PATCH v2 1/2] PCI: dwc: Skip PME_Turn_Off broadcast and L2/L3\n transition during suspend if link is not up",
        "Precedence": "bulk",
        "X-Mailing-List": "linux-pci@vger.kernel.org",
        "List-Id": "<linux-pci.vger.kernel.org>",
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        "Message-Id": "\n <20251218-pci-dwc-suspend-rework-v2-1-5a7778c6094a@oss.qualcomm.com>",
        "References": "\n <20251218-pci-dwc-suspend-rework-v2-0-5a7778c6094a@oss.qualcomm.com>",
        "In-Reply-To": "\n <20251218-pci-dwc-suspend-rework-v2-0-5a7778c6094a@oss.qualcomm.com>",
        "To": "Jingoo Han <jingoohan1@gmail.com>,\n  Manivannan Sadhasivam <mani@kernel.org>,\n  Lorenzo Pieralisi <lpieralisi@kernel.org>, =?utf-8?q?Krzysztof_Wilczy?=\n\t=?utf-8?q?=C5=84ski?= <kwilczynski@kernel.org>,\n  Rob Herring <robh@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>",
        "Cc": "linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,\n vincent.guittot@linaro.org, zhangsenchuan@eswincomputing.com,\n Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>,\n Frank Li <Frank.Li@nxp.com>, Shawn Lin <shawn.lin@rock-chips.com>",
        "X-Mailer": "b4 0.14.3",
        "X-Developer-Signature": "v=1; a=openpgp-sha256; l=1250;\n i=manivannan.sadhasivam@oss.qualcomm.com; h=from:subject:message-id;\n bh=zzm1js4g/wb9/28LZoMBiDrVq1+JGQ8PgCaGDVkxvSs=;\n b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBpQ+3laZ2TdGjXY+TPWcrdGBRDdPW7B7FcXIp27\n DNrZqWM4bmJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCaUPt5QAKCRBVnxHm/pHO\n 9XTZB/4yPHL8Wjn52iy6qP+I1K8EXtv1sxI3nuQ+NSmi0q+YIqM8E04b/xCOgf6pvOLmcp+W3yV\n E7oNEl4+Eh0jGpJBUd2tueucmVGYODQDMBnNYAOAzHI7a/Q9y9QJ0Ax6czPZ4zP52tDpfpnlFp8\n h+8tuIf/L5DprSvFHPbYjxpmP/Tgrqbl8OZbo+hCVqLkWLmXZuRMXzbI0z26ywwWDdmkPANCt66\n qd9l6IWynASqsOntET8UJHhbMl5Rt6A0Qz2gf3lXW8WrUJf2zN7Giui7N5Llv7EGD0gV9M8Smcv\n PA7xqPWJ2SeJ6gL5j7O4N+fg2325R2HGbshrc3y2SIsEv70/",
        "X-Developer-Key": "i=manivannan.sadhasivam@oss.qualcomm.com; a=openpgp;\n fpr=C668AEC3C3188E4C611465E7488550E901166008",
        "X-Endpoint-Received": "by B4 Relay for\n manivannan.sadhasivam@oss.qualcomm.com/default with auth_id=461",
        "X-Original-From": "Manivannan Sadhasivam\n <manivannan.sadhasivam@oss.qualcomm.com>",
        "Reply-To": "manivannan.sadhasivam@oss.qualcomm.com"
    },
    "content": "From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>\n\nDuring system suspend, if the PCIe link is not up, then there is no need\nto broadcast PME_Turn_Off message and wait for L2/L3 transition. So skip\nthem.\n\nTested-by: Vincent Guittot <vincent.guittot@linaro.org>\nReviewed-by: Frank Li <Frank.Li@nxp.com>\nReviewed-by: Shawn Lin <shawn.lin@rock-chips.com>\nSigned-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>\n---\n drivers/pci/controller/dwc/pcie-designware-host.c | 4 ++++\n 1 file changed, 4 insertions(+)",
    "diff": "diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c\nindex 372207c33a85..43d091128ef7 100644\n--- a/drivers/pci/controller/dwc/pcie-designware-host.c\n+++ b/drivers/pci/controller/dwc/pcie-designware-host.c\n@@ -1161,6 +1161,9 @@ int dw_pcie_suspend_noirq(struct dw_pcie *pci)\n \tu32 val;\n \tint ret;\n \n+\tif (!dw_pcie_link_up(pci))\n+\t\tgoto stop_link;\n+\n \t/*\n \t * If L1SS is supported, then do not put the link into L2 as some\n \t * devices such as NVMe expect low resume latency.\n@@ -1194,6 +1197,7 @@ int dw_pcie_suspend_noirq(struct dw_pcie *pci)\n \t */\n \tudelay(1);\n \n+stop_link:\n \tdw_pcie_stop_link(pci);\n \tif (pci->pp.ops->deinit)\n \t\tpci->pp.ops->deinit(&pci->pp);\n",
    "prefixes": [
        "v2",
        "1/2"
    ]
}