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GET /api/patches/2217182/?format=api
{ "id": 2217182, "url": "http://patchwork.ozlabs.org/api/patches/2217182/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260327184706.1600329-9-vladimir.oltean@nxp.com/", "project": { "id": 21, "url": "http://patchwork.ozlabs.org/api/projects/21/?format=api", "name": "Linux Tegra Development", "link_name": "linux-tegra", "list_id": "linux-tegra.vger.kernel.org", "list_email": "linux-tegra@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260327184706.1600329-9-vladimir.oltean@nxp.com>", "list_archive_url": null, "date": "2026-03-27T18:46:46", "name": "[v6,phy-next,08/28] PCI: Remove device links to PHY", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "40518ee2f5409b9f292fd52b736629c3ea1dee2a", "submitter": { "id": 75582, "url": "http://patchwork.ozlabs.org/api/people/75582/?format=api", "name": "Vladimir Oltean", "email": "vladimir.oltean@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260327184706.1600329-9-vladimir.oltean@nxp.com/mbox/", "series": [ { "id": 497819, "url": "http://patchwork.ozlabs.org/api/series/497819/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/list/?series=497819", "date": "2026-03-27T18:46:38", "name": "[v6,phy-next,01/28] ata: add <linux/pm_runtime.h> where missing", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/497819/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217182/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217182/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-tegra+bounces-13353-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-tegra@vger.kernel.org" ], "Delivered-To": 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"DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=HUkwIfCup7g/hS5s64hg3B1Z9fNJr7FfPm5pRcEZ9tY=;\n b=YJmPDJXQUog52O/NxWDAL/vDAB8V8gm/3UB/sDGe4YlTZ4TQghkfW/liKMysPNIZtCx/zxRNnJjKr9JJeJOdNp9UQPXm9ERyNBRmqzDl24Cx0fcbOuxqeHhungnltvYgYLCKW7WyPHNzjZZSl9e69lHH2kLywWsD43JccgobaJiUUCvQnmGWGZr3xWQgdYFF08b/yI2YQeJQZcS3P/Ypmg07MN9STyoTAkrTDKaZcVFHLwYLqzS1Qw/ZwvPu2fiUb0XbfCx+RA4BZXbhaqn48pJGK4XDlqnDqWQ4ibKzty4LriAUZSYAzz5sBq+ug1V6R/SXdZSzg6dDrIiZsNwkag==", "From": "Vladimir Oltean <vladimir.oltean@nxp.com>", "To": "linux-phy@lists.infradead.org", "Cc": "Vinod Koul <vkoul@kernel.org>, Neil Armstrong <neil.armstrong@linaro.org>,\n dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,\n linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org,\n linux-can@vger.kernel.org, linux-gpio@vger.kernel.org,\n linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-media@vger.kernel.org, linux-pci@vger.kernel.org,\n linux-renesas-soc@vger.kernel.org, linux-riscv@lists.infradead.org,\n linux-rockchip@lists.infradead.org, linux-samsung-soc@vger.kernel.org,\n linux-scsi@vger.kernel.org, linux-sunxi@lists.linux.dev,\n linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org,\n netdev@vger.kernel.org, spacemit@lists.linux.dev,\n UNGLinuxDriver@microchip.com, Bjorn Helgaas <bhelgaas@google.com>,\n Manivannan Sadhasivam <mani@kernel.org>,\n Lorenzo Pieralisi <lpieralisi@kernel.org>, =?utf-8?q?Krzysztof_Wilczy=C5=84?=\n\t=?utf-8?q?ski?= <kwilczynski@kernel.org>, Rob Herring <robh@kernel.org>,\n Vignesh Raghavendra <vigneshr@ti.com>,\n Siddharth Vadapalli <s-vadapalli@ti.com>", "Subject": "[PATCH v6 phy-next 08/28] PCI: Remove device links to PHY", "Date": "Fri, 27 Mar 2026 20:46:46 +0200", "Message-ID": "<20260327184706.1600329-9-vladimir.oltean@nxp.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": 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"X-MS-Exchange-AntiSpam-MessageData-1": "rOcb49fJIbFr/+wUrOH09rroj97vGxPifUs=", "X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 0246684a-5fac-400d-ef62-08de8c317be1", "X-MS-Exchange-CrossTenant-AuthSource": "DU2PR04MB8584.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "27 Mar 2026 18:48:49.4066\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "686ea1d3-bc2b-4c6f-a92c-d99c5c301635", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n jn+6paqi3Dc0A3oDylSnVvNOeW0UQbR82ReTiymt3ncNfhUp8F/+asZkfwInpb07fD6CeAyKBzuMhUyQie4q7w==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "MRWPR04MB11287" }, "content": "This is practically a full revert of commit\n7a4db656a635 (\"PCI: dra7xx: Create functional dependency between PCIe and PHY\")\nand a partial revert of the device link pieces from commits\ndfb80534692d (\"PCI: cadence: Add generic PHY support to host and EP drivers\")\n49229238ab47 (\"PCI: keystone: Cleanup PHY handling\")\n\nThe trouble with these commits is that they dereference fields inside\nstruct phy from a consumer driver, which will become no longer possible.\n\nSince commit 987351e1ea77 (\"phy: core: Add consumer device link\nsupport\") from 2019, the PHY core also adds a device link to order PHY\nprovider and consumer suspend/resume operations. All reverted commits\nare from 2017-2018, and what they do should actually be redundant now.\n\nSigned-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>\nAcked-by: Bjorn Helgaas <bhelgaas@google.com>\nReviewed-by: Manivannan Sadhasivam <mani@kernel.org>\n---\nCc: Lorenzo Pieralisi <lpieralisi@kernel.org>\nCc: \"Krzysztof Wilczyński\" <kwilczynski@kernel.org>\nCc: Manivannan Sadhasivam <mani@kernel.org>\nCc: Rob Herring <robh@kernel.org>\nCc: Bjorn Helgaas <bhelgaas@google.com>\nCc: Vignesh Raghavendra <vigneshr@ti.com>\nCc: Siddharth Vadapalli <s-vadapalli@ti.com>\n\nv5->v6: collect tag from Manivannan Sadhasivam\nv3->v5: none\nv2->v3:\n- remove dangling set but unused phy_count local variable in\n cdns_plat_pcie_probe()\nv1->v2:\n- fully remove struct device link **link from struct cdns_pcie and from\n cdns_plat_pcie_probe() error path\n- collect tag from Bjorn Helgaas\n- adjust commit title\n---\n .../controller/cadence/pcie-cadence-plat.c | 4 ---\n drivers/pci/controller/cadence/pcie-cadence.c | 16 +---------\n drivers/pci/controller/cadence/pcie-cadence.h | 2 --\n drivers/pci/controller/dwc/pci-dra7xx.c | 16 ----------\n drivers/pci/controller/dwc/pci-keystone.c | 31 +++----------------\n 5 files changed, 5 insertions(+), 64 deletions(-)", "diff": "diff --git a/drivers/pci/controller/cadence/pcie-cadence-plat.c b/drivers/pci/controller/cadence/pcie-cadence-plat.c\nindex b067a3296dd3..fc39c01b7964 100644\n--- a/drivers/pci/controller/cadence/pcie-cadence-plat.c\n+++ b/drivers/pci/controller/cadence/pcie-cadence-plat.c\n@@ -41,7 +41,6 @@ static int cdns_plat_pcie_probe(struct platform_device *pdev)\n \tstruct pci_host_bridge *bridge;\n \tstruct cdns_pcie_ep *ep;\n \tstruct cdns_pcie_rc *rc;\n-\tint phy_count;\n \tbool is_rc;\n \tint ret;\n \n@@ -122,9 +121,6 @@ static int cdns_plat_pcie_probe(struct platform_device *pdev)\n \tpm_runtime_put_sync(dev);\n \tpm_runtime_disable(dev);\n \tcdns_pcie_disable_phy(cdns_plat_pcie->pcie);\n-\tphy_count = cdns_plat_pcie->pcie->phy_count;\n-\twhile (phy_count--)\n-\t\tdevice_link_del(cdns_plat_pcie->pcie->link[phy_count]);\n \n \treturn 0;\n }\ndiff --git a/drivers/pci/controller/cadence/pcie-cadence.c b/drivers/pci/controller/cadence/pcie-cadence.c\nindex a1eada56edba..0ac980249941 100644\n--- a/drivers/pci/controller/cadence/pcie-cadence.c\n+++ b/drivers/pci/controller/cadence/pcie-cadence.c\n@@ -222,7 +222,6 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie)\n \tstruct device_node *np = dev->of_node;\n \tint phy_count;\n \tstruct phy **phy;\n-\tstruct device_link **link;\n \tint i;\n \tint ret;\n \tconst char *name;\n@@ -238,10 +237,6 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie)\n \tif (!phy)\n \t\treturn -ENOMEM;\n \n-\tlink = devm_kcalloc(dev, phy_count, sizeof(*link), GFP_KERNEL);\n-\tif (!link)\n-\t\treturn -ENOMEM;\n-\n \tfor (i = 0; i < phy_count; i++) {\n \t\tof_property_read_string_index(np, \"phy-names\", i, &name);\n \t\tphy[i] = devm_phy_get(dev, name);\n@@ -249,17 +244,10 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie)\n \t\t\tret = PTR_ERR(phy[i]);\n \t\t\tgoto err_phy;\n \t\t}\n-\t\tlink[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS);\n-\t\tif (!link[i]) {\n-\t\t\tdevm_phy_put(dev, phy[i]);\n-\t\t\tret = -EINVAL;\n-\t\t\tgoto err_phy;\n-\t\t}\n \t}\n \n \tpcie->phy_count = phy_count;\n \tpcie->phy = phy;\n-\tpcie->link = link;\n \n \tret = cdns_pcie_enable_phy(pcie);\n \tif (ret)\n@@ -268,10 +256,8 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie)\n \treturn 0;\n \n err_phy:\n-\twhile (--i >= 0) {\n-\t\tdevice_link_del(link[i]);\n+\twhile (--i >= 0)\n \t\tdevm_phy_put(dev, phy[i]);\n-\t}\n \n \treturn ret;\n }\ndiff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/controller/cadence/pcie-cadence.h\nindex 443033c607d7..35b0b33bc6fb 100644\n--- a/drivers/pci/controller/cadence/pcie-cadence.h\n+++ b/drivers/pci/controller/cadence/pcie-cadence.h\n@@ -82,7 +82,6 @@ struct cdns_plat_pcie_of_data {\n * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoint.\n * @phy_count: number of supported PHY devices\n * @phy: list of pointers to specific PHY control blocks\n- * @link: list of pointers to corresponding device link representations\n * @ops: Platform-specific ops to control various inputs from Cadence PCIe\n * wrapper\n * @cdns_pcie_reg_offsets: Register bank offsets for different SoC\n@@ -95,7 +94,6 @@ struct cdns_pcie {\n \tbool\t\t\t is_rc;\n \tint\t\t\t phy_count;\n \tstruct phy\t\t **phy;\n-\tstruct device_link\t **link;\n \tconst struct cdns_pcie_ops *ops;\n \tconst struct cdns_plat_pcie_of_data *cdns_pcie_reg_offsets;\n };\ndiff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c\nindex d5d26229063f..b91ab37845c9 100644\n--- a/drivers/pci/controller/dwc/pci-dra7xx.c\n+++ b/drivers/pci/controller/dwc/pci-dra7xx.c\n@@ -9,7 +9,6 @@\n \n #include <linux/clk.h>\n #include <linux/delay.h>\n-#include <linux/device.h>\n #include <linux/err.h>\n #include <linux/interrupt.h>\n #include <linux/irq.h>\n@@ -683,7 +682,6 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)\n \tint i;\n \tint phy_count;\n \tstruct phy **phy;\n-\tstruct device_link **link;\n \tvoid __iomem *base;\n \tstruct dw_pcie *pci;\n \tstruct dra7xx_pcie *dra7xx;\n@@ -731,10 +729,6 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)\n \tif (!phy)\n \t\treturn -ENOMEM;\n \n-\tlink = devm_kcalloc(dev, phy_count, sizeof(*link), GFP_KERNEL);\n-\tif (!link)\n-\t\treturn -ENOMEM;\n-\n \tdra7xx->clk = devm_clk_get_optional(dev, NULL);\n \tif (IS_ERR(dra7xx->clk))\n \t\treturn dev_err_probe(dev, PTR_ERR(dra7xx->clk),\n@@ -749,12 +743,6 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)\n \t\tphy[i] = devm_phy_get(dev, name);\n \t\tif (IS_ERR(phy[i]))\n \t\t\treturn PTR_ERR(phy[i]);\n-\n-\t\tlink[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS);\n-\t\tif (!link[i]) {\n-\t\t\tret = -EINVAL;\n-\t\t\tgoto err_link;\n-\t\t}\n \t}\n \n \tdra7xx->base = base;\n@@ -856,10 +844,6 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)\n \tpm_runtime_disable(dev);\n \tdra7xx_pcie_disable_phy(dra7xx);\n \n-err_link:\n-\twhile (--i >= 0)\n-\t\tdevice_link_del(link[i]);\n-\n \treturn ret;\n }\n \ndiff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c\nindex 642e4c45eefc..07698c645e02 100644\n--- a/drivers/pci/controller/dwc/pci-keystone.c\n+++ b/drivers/pci/controller/dwc/pci-keystone.c\n@@ -130,7 +130,6 @@ struct keystone_pcie {\n \tint\t\t\tnum_lanes;\n \tu32\t\t\tnum_viewport;\n \tstruct phy\t\t**phy;\n-\tstruct device_link\t**link;\n \tstruct\t\t\tdevice_node *msi_intc_np;\n \tstruct irq_domain\t*intx_irq_domain;\n \tstruct device_node\t*np;\n@@ -1118,7 +1117,6 @@ static int ks_pcie_probe(struct platform_device *pdev)\n \tenum dw_pcie_device_mode mode;\n \tstruct dw_pcie *pci;\n \tstruct keystone_pcie *ks_pcie;\n-\tstruct device_link **link;\n \tstruct gpio_desc *gpiod;\n \tstruct resource *res;\n \tvoid __iomem *base;\n@@ -1189,31 +1187,17 @@ static int ks_pcie_probe(struct platform_device *pdev)\n \tif (!phy)\n \t\treturn -ENOMEM;\n \n-\tlink = devm_kcalloc(dev, num_lanes, sizeof(*link), GFP_KERNEL);\n-\tif (!link)\n-\t\treturn -ENOMEM;\n-\n \tfor (i = 0; i < num_lanes; i++) {\n \t\tsnprintf(name, sizeof(name), \"pcie-phy%d\", i);\n \t\tphy[i] = devm_phy_optional_get(dev, name);\n \t\tif (IS_ERR(phy[i])) {\n \t\t\tret = PTR_ERR(phy[i]);\n-\t\t\tgoto err_link;\n-\t\t}\n-\n-\t\tif (!phy[i])\n-\t\t\tcontinue;\n-\n-\t\tlink[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS);\n-\t\tif (!link[i]) {\n-\t\t\tret = -EINVAL;\n-\t\t\tgoto err_link;\n+\t\t\tgoto err;\n \t\t}\n \t}\n \n \tks_pcie->np = np;\n \tks_pcie->pci = pci;\n-\tks_pcie->link = link;\n \tks_pcie->num_lanes = num_lanes;\n \tks_pcie->phy = phy;\n \n@@ -1223,7 +1207,7 @@ static int ks_pcie_probe(struct platform_device *pdev)\n \t\tret = PTR_ERR(gpiod);\n \t\tif (ret != -EPROBE_DEFER)\n \t\t\tdev_err(dev, \"Failed to get reset GPIO\\n\");\n-\t\tgoto err_link;\n+\t\tgoto err;\n \t}\n \n \t/* Obtain references to the PHYs */\n@@ -1238,7 +1222,7 @@ static int ks_pcie_probe(struct platform_device *pdev)\n \n \tif (ret) {\n \t\tdev_err(dev, \"failed to enable phy\\n\");\n-\t\tgoto err_link;\n+\t\tgoto err;\n \t}\n \n \tplatform_set_drvdata(pdev, ks_pcie);\n@@ -1325,25 +1309,18 @@ static int ks_pcie_probe(struct platform_device *pdev)\n \tpm_runtime_disable(dev);\n \tks_pcie_disable_phy(ks_pcie);\n \n-err_link:\n-\twhile (--i >= 0 && link[i])\n-\t\tdevice_link_del(link[i]);\n-\n+err:\n \treturn ret;\n }\n \n static void ks_pcie_remove(struct platform_device *pdev)\n {\n \tstruct keystone_pcie *ks_pcie = platform_get_drvdata(pdev);\n-\tstruct device_link **link = ks_pcie->link;\n-\tint num_lanes = ks_pcie->num_lanes;\n \tstruct device *dev = &pdev->dev;\n \n \tpm_runtime_put(dev);\n \tpm_runtime_disable(dev);\n \tks_pcie_disable_phy(ks_pcie);\n-\twhile (num_lanes--)\n-\t\tdevice_link_del(link[num_lanes]);\n }\n \n static struct platform_driver ks_pcie_driver = {\n", "prefixes": [ "v6", "phy-next", "08/28" ] }