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GET /api/patches/2223386/?format=api
{ "id": 2223386, "url": "http://patchwork.ozlabs.org/api/patches/2223386/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260415-pcie-intel-gw-v4-5-ad45d2418c8e@dev.tdt.de/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260415-pcie-intel-gw-v4-5-ad45d2418c8e@dev.tdt.de>", "list_archive_url": null, "date": "2026-04-15T08:01:51", "name": "[v4,5/7] PCI: intel-gw: Add start_link callback function", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d6a6128d2a6e97ec7062e1388f696d2b4c175d14", "submitter": { "id": 72238, "url": "http://patchwork.ozlabs.org/api/people/72238/?format=api", "name": "Florian Eckert", "email": "fe@dev.tdt.de" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260415-pcie-intel-gw-v4-5-ad45d2418c8e@dev.tdt.de/mbox/", "series": [ { "id": 499942, "url": "http://patchwork.ozlabs.org/api/series/499942/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=499942", "date": "2026-04-15T08:01:47", "name": "PCI: intel-gw: Fixes to make the driver working again", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/499942/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223386/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223386/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-52536-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=temperror header.d=dev.tdt.de header.i=@dev.tdt.de header.a=rsa-sha256\n header.s=z1-selector1 header.b=WVp/r6yu;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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a=rsa-sha256; c=relaxed/relaxed; d=dev.tdt.de;\n\ts=z1-selector1; t=1776240114;\n\tbh=3A2J+2MFklTaE6h9BZznlvghg/HLXg4vKOLkKJTaKbc=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=WVp/r6yuM+8liV0iBHcJkduZI7Ed7rwtZ2yntqBxD0cHSzGPcwpqolOp/nadP3e63\n\t hmBEafbvb6ZR+MADq9xuBIFas3yJfQIG0vEQcz104lwQzzn0dbNSPqlTwDJZXcXFNI\n\t 9G9E1gqjR9EoaZKDfxwWZJqkQa/R40mS+ZePgtPlswz9W8OyKJXlA7tBj722j0HzUJ\n\t Q7AZruP02RCGuBnCXAVH3144gaqahuLr24oIqW2wFLpVxIzymYqUAVz5snDg3bchDl\n\t TrWbzpBao4U7BNZtLwDFofOORzf1KkxzHGfzlpsdj9VN+3M3pe5d6M/4wH0Uwe3QMh\n\t LbCBo9p5eu5BA==", "From": "Florian Eckert <fe@dev.tdt.de>", "Date": "Wed, 15 Apr 2026 10:01:51 +0200 (CEST)", "Subject": "[PATCH v4 5/7] PCI: intel-gw: Add start_link callback function", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-ID": "<20260415-pcie-intel-gw-v4-5-ad45d2418c8e@dev.tdt.de>", "References": "<20260415-pcie-intel-gw-v4-0-ad45d2418c8e@dev.tdt.de>", "In-Reply-To": "<20260415-pcie-intel-gw-v4-0-ad45d2418c8e@dev.tdt.de>", "To": "Lorenzo Pieralisi <lpieralisi@kernel.org>, =?utf-8?q?Krzysztof_Wilczy?=\n\t=?utf-8?q?=C5=84ski?= <kwilczynski@kernel.org>,\n Manivannan Sadhasivam <mani@kernel.org>, Rob Herring <robh@kernel.org>,\n Bjorn Helgaas <bhelgaas@google.com>, Johan Hovold <johan+linaro@kernel.org>,\n Sajid Dalvi <sdalvi@google.com>, Ajay Agarwal <ajayagarwal@google.com>,\n Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>", "Cc": "linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,\n\tdevicetree@vger.kernel.org, Florian Eckert <fe@dev.tdt.de>,\n\tEckert.Florian@googlemail.com, ms@dev.tdt.de", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1776240111; l=3153;\n i=fe@dev.tdt.de; s=20260205; h=from:subject:message-id;\n bh=1QhwwO0tMMhb5/PF/9cK8bvzkNyUt/Wf2sydrtsZXUc=;\n b=xZWea6SKVdk8phIcykeaa/lhRj/xE1Y9ygqH+pY5UY96jz7IKdcP9cj7gN61L3J8+881a41Sc\n /PFBb6JmNuoDX1FbkB+JcTEbKiSEPrGm/QuV7y8lPzoIZJSkQ8EVhRO", "X-Developer-Key": "i=fe@dev.tdt.de; a=ed25519;\n pk=q7Pvv3Au2sAVRhBz5UF7ZqUPNxUwXQ78Jdqu8E6Negk=", "X-purgate-type": "clean", "X-purgate": "clean", "X-purgate-ID": "151534::1776240115-FBFF42EC-C76EFE1C/0/0" }, "content": "The pcie-intel-gw driver has no start_link callback function. This commit\nadds the missing callback function so that the driver works again and does\nnot abort with the following error messages during probing.\n\n[ 2.512015] intel-gw-pcie d1000000.pcie: host bridge /soc/pcie@d1000000 ranges:\n[ 2.517868] intel-gw-pcie d1000000.pcie: MEM 0x00dc000000..0x00ddffffff -> 0x00dc000000\n[ 2.528450] intel-combo-phy d0c00000.combo-phy: Set combo mode: combophy[1]: mode: PCIe single lane mode\n[ 2.551619] intel-gw-pcie d1000000.pcie: No outbound iATU found\n[ 2.556060] intel-gw-pcie d1000000.pcie: Cannot initialize host\n[ 2.561901] intel-gw-pcie d1000000.pcie: probe with driver intel-gw-pcie failed with error -22\n[ 2.571041] intel-gw-pcie c1100000.pcie: host bridge /soc/pcie@c1100000 ranges:\n[ 2.577736] intel-gw-pcie c1100000.pcie: MEM 0x00ce000000..0x00cfffffff -> 0x00ce000000\n[ 2.588299] intel-combo-phy c0c00000.combo-phy: Set combo mode: combophy[3]: mode: PCIe single lane mode\n[ 2.611471] intel-gw-pcie c1100000.pcie: No outbound iATU found\n[ 2.615934] intel-gw-pcie c1100000.pcie: Cannot initialize host\n[ 2.621759] intel-gw-pcie c1100000.pcie: probe with driver intel-gw-pcie failed with error -22\n\nFixes: c5097b9869a1 (\"Revert \"PCI: dwc: Wait for link up only if link is started\"\")\nFixes: da56a1bfbab5 (\"PCI: dwc: Wait for link up only if link is started\")\nSigned-off-by: Florian Eckert <fe@dev.tdt.de>\n---\n drivers/pci/controller/dwc/pcie-intel-gw.c | 24 +++++++++++-------------\n 1 file changed, 11 insertions(+), 13 deletions(-)", "diff": "diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c\nindex 6d9499d954674a26a74bff56b7fb5759767424c0..afd933050c92ee31c477e0b1738ab1136bdcfbf6 100644\n--- a/drivers/pci/controller/dwc/pcie-intel-gw.c\n+++ b/drivers/pci/controller/dwc/pcie-intel-gw.c\n@@ -284,6 +284,16 @@ static void intel_pcie_turn_off(struct intel_pcie *pcie)\n \tpcie_rc_cfg_wr_mask(pcie, PCI_COMMAND, PCI_COMMAND_MEMORY, 0);\n }\n \n+static int intel_pcie_start_link(struct dw_pcie *pci)\n+{\n+\tstruct intel_pcie *pcie = dev_get_drvdata(pci->dev);\n+\n+\tintel_pcie_device_rst_deassert(pcie);\n+\tintel_pcie_ltssm_enable(pcie);\n+\n+\treturn 0;\n+}\n+\n static int intel_pcie_host_setup(struct intel_pcie *pcie)\n {\n \tint ret;\n@@ -310,25 +320,12 @@ static int intel_pcie_host_setup(struct intel_pcie *pcie)\n \tintel_pcie_link_setup(pcie);\n \tintel_pcie_init_n_fts(pci);\n \n-\tret = dw_pcie_setup_rc(&pci->pp);\n-\tif (ret)\n-\t\tgoto err;\n-\n \tdw_pcie_upconfig_setup(pci);\n \n-\tintel_pcie_device_rst_deassert(pcie);\n-\tintel_pcie_ltssm_enable(pcie);\n-\n-\tret = dw_pcie_wait_for_link(pci);\n-\tif (ret)\n-\t\tgoto err;\n-\n \tintel_pcie_core_irq_enable(pcie);\n \n \treturn 0;\n \n-err:\n-\tphy_exit(pcie->phy);\n phy_err:\n \tclk_disable_unprepare(pcie->core_clk);\n clk_err:\n@@ -386,6 +383,7 @@ static int intel_pcie_rc_init(struct dw_pcie_rp *pp)\n }\n \n static const struct dw_pcie_ops intel_pcie_ops = {\n+\t.start_link = intel_pcie_start_link,\n };\n \n static const struct dw_pcie_host_ops intel_pcie_dw_ops = {\n", "prefixes": [ "v4", "5/7" ] }