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GET /api/patches/2217224/?format=api
{ "id": 2217224, "url": "http://patchwork.ozlabs.org/api/patches/2217224/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260327184706.1600329-13-vladimir.oltean@nxp.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260327184706.1600329-13-vladimir.oltean@nxp.com>", "list_archive_url": null, "date": "2026-03-27T18:46:50", "name": "[v6,phy-next,12/28] drm/rockchip: dw_hdmi: avoid direct dereference of phy->dev.of_node", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "03e709137918fd26fd526a537052af572e972917", "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-gpio/patch/20260327184706.1600329-13-vladimir.oltean@nxp.com/mbox/", "series": [ { "id": 497821, "url": "http://patchwork.ozlabs.org/api/series/497821/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=497821", "date": "2026-03-27T18:46:39", "name": "Split Generic PHY consumer and provider", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/497821/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217224/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217224/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-gpio+bounces-34307-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-gpio@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=S48+hgH2VmzfEjLMOCn4XbeTFUmmqXzy8WudOwilpqY=;\n b=nhvxVNe4j2xzpTT1/OlIgj8h0f5Q7y1IqgrfEv26ZbxxoFay4/W3QSrsAUlWlNVF+/UZMpC+5XjDgFXnGGL0D75ZLDmM+SPGgXENETSK4Zqv+7JbbaYb4mtuJZvQxL+vGBk87ntauokV2ai76T4zG3oaK+0cz0I6UjPoEPt5VynAO5WkUCJFN0P2DSZMainWlrUhwH1kEvapa64Cq/x6B0YV0eGuagnvouDT4mMA9edLZomxsAdmyoKAvD/D2wgCS6n8oWk5LxMTEeSmW3JFDW2YJS7Zhy1fqALzdh35rScptXhDyt5hyyxlasfzncGCQU+qDygY85l7djfjktya9w==", "From": "Vladimir Oltean <vladimir.oltean@nxp.com>", "To": "linux-phy@lists.infradead.org", "Cc": "Vinod Koul <vkoul@kernel.org>,\n\tNeil Armstrong <neil.armstrong@linaro.org>,\n\tdri-devel@lists.freedesktop.org,\n\tfreedreno@lists.freedesktop.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-arm-msm@vger.kernel.org,\n\tlinux-can@vger.kernel.org,\n\tlinux-gpio@vger.kernel.org,\n\tlinux-ide@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-media@vger.kernel.org,\n\tlinux-pci@vger.kernel.org,\n\tlinux-renesas-soc@vger.kernel.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-rockchip@lists.infradead.org,\n\tlinux-samsung-soc@vger.kernel.org,\n\tlinux-scsi@vger.kernel.org,\n\tlinux-sunxi@lists.linux.dev,\n\tlinux-tegra@vger.kernel.org,\n\tlinux-usb@vger.kernel.org,\n\tnetdev@vger.kernel.org,\n\tspacemit@lists.linux.dev,\n\tUNGLinuxDriver@microchip.com,\n\tHeiko Stueber <heiko@sntech.de>,\n\tSandy Huang <hjc@rock-chips.com>,\n\tAndy Yan <andy.yan@rock-chips.com>,\n\tMaarten Lankhorst <maarten.lankhorst@linux.intel.com>,\n\tMaxime Ripard <mripard@kernel.org>,\n\tThomas Zimmermann <tzimmermann@suse.de>,\n\tDavid Airlie <airlied@gmail.com>,\n\tSimona Vetter <simona@ffwll.ch>", "Subject": "[PATCH v6 phy-next 12/28] drm/rockchip: dw_hdmi: avoid direct\n dereference of phy->dev.of_node", "Date": "Fri, 27 Mar 2026 20:46:50 +0200", "Message-ID": "<20260327184706.1600329-13-vladimir.oltean@nxp.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260327184706.1600329-1-vladimir.oltean@nxp.com>", "References": "<20260327184706.1600329-1-vladimir.oltean@nxp.com>", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "X-ClientProxiedBy": "VI6PEPF00000222.AUTP296.PROD.OUTLOOK.COM\n (2603:10a6:808:1::8f8) To DU2PR04MB8584.eurprd04.prod.outlook.com\n (2603:10a6:10:2db::24)", "Precedence": "bulk", "X-Mailing-List": "linux-gpio@vger.kernel.org", "List-Id": "<linux-gpio.vger.kernel.org>", "List-Subscribe": "<mailto:linux-gpio+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-gpio+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "X-MS-PublicTrafficType": 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"X-MS-Exchange-AntiSpam-MessageData-1": "7Bctp4s+Lqf4u55zlkR5YlhM+thUVaDp7vw=", "X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 3704dbb6-f262-4fb4-0b09-08de8c31818a", "X-MS-Exchange-CrossTenant-AuthSource": "DU2PR04MB8584.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "27 Mar 2026 18:48:58.8939\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 j2xy9Waqoe3oDnieZjJn8K6urlUMP+z12bYBm/vwALevdIxoC5VaypuViU+lWoz8F20/jKFzZot/cpZqOwnaDQ==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "MRWPR04MB11287" }, "content": "The dw_hdmi-rockchip driver validates pixel clock rates against the\nHDMI PHY's internal clock provider on certain SoCs like RK3328.\nThis is currently achieved by dereferencing hdmi->phy->dev.of_node\nto obtain the provider node, which violates the Generic PHY API's\nencapsulation (the goal is for struct phy to be an opaque pointer\nwith a hidden definition, to be interacted with only using API\nfunctions or NULL pointer checks, for the case where optional variants\nof phy_get() did not find a PHY).\n\nRefactor dw_hdmi_rockchip_bind() to perform a manual phandle lookup\non the \"hdmi\" PHY index within the controller's DT node. This provides\na parallel path to the clock provider's OF node without relying on the\ninternal structure of the struct phy handle.\n\nSigned-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>\nReviewed-by: Heiko Stueber <heiko@sntech.de>\n---\nCc: Sandy Huang <hjc@rock-chips.com>\nCc: \"Heiko Stübner\" <heiko@sntech.de>\nCc: Andy Yan <andy.yan@rock-chips.com>\nCc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>\nCc: Maxime Ripard <mripard@kernel.org>\nCc: Thomas Zimmermann <tzimmermann@suse.de>\nCc: David Airlie <airlied@gmail.com>\nCc: Simona Vetter <simona@ffwll.ch>\n\nv4->v6: none\nv3->v4: add commit message clarification of what is understood by\n \"opaque pointer\"\nv1->v3: none\n---\n drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 25 ++++++++++++---------\n 1 file changed, 15 insertions(+), 10 deletions(-)", "diff": "diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c\nindex 0dc1eb5d2ae3..7abb42e486c0 100644\n--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c\n+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c\n@@ -537,21 +537,22 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,\n \t\t\t\t void *data)\n {\n \tstruct platform_device *pdev = to_platform_device(dev);\n+\tstruct device_node *np = dev_of_node(dev);\n \tstruct dw_hdmi_plat_data *plat_data;\n \tconst struct of_device_id *match;\n \tstruct drm_device *drm = data;\n \tstruct drm_encoder *encoder;\n \tstruct rockchip_hdmi *hdmi;\n-\tint ret;\n+\tint ret, index;\n \n-\tif (!pdev->dev.of_node)\n+\tif (!np)\n \t\treturn -ENODEV;\n \n \thdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);\n \tif (!hdmi)\n \t\treturn -ENOMEM;\n \n-\tmatch = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);\n+\tmatch = of_match_node(dw_hdmi_rockchip_dt_ids, np);\n \tplat_data = devm_kmemdup(&pdev->dev, match->data,\n \t\t\t\t\t sizeof(*plat_data), GFP_KERNEL);\n \tif (!plat_data)\n@@ -564,9 +565,9 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,\n \tplat_data->priv_data = hdmi;\n \tencoder = &hdmi->encoder.encoder;\n \n-\tencoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);\n+\tencoder->possible_crtcs = drm_of_find_possible_crtcs(drm, np);\n \trockchip_drm_encoder_set_crtc_endpoint_id(&hdmi->encoder,\n-\t\t\t\t\t\t dev->of_node, 0, 0);\n+\t\t\t\t\t\t np, 0, 0);\n \n \t/*\n \t * If we failed to find the CRTC(s) which this encoder is\n@@ -588,13 +589,17 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,\n \t\treturn dev_err_probe(hdmi->dev, ret, \"failed to get phy\\n\");\n \t}\n \n-\tif (hdmi->phy) {\n+\tindex = of_property_match_string(np, \"phy-names\", \"hdmi\");\n+\tif (index >= 0) {\n \t\tstruct of_phandle_args clkspec;\n \n-\t\tclkspec.np = hdmi->phy->dev.of_node;\n-\t\thdmi->hdmiphy_clk = of_clk_get_from_provider(&clkspec);\n-\t\tif (IS_ERR(hdmi->hdmiphy_clk))\n-\t\t\thdmi->hdmiphy_clk = NULL;\n+\t\tif (!of_parse_phandle_with_args(np, \"phys\", \"#phy-cells\", index,\n+\t\t\t\t\t\t&clkspec)) {\n+\t\t\thdmi->hdmiphy_clk = of_clk_get_from_provider(&clkspec);\n+\t\t\tof_node_put(clkspec.np);\n+\t\t\tif (IS_ERR(hdmi->hdmiphy_clk))\n+\t\t\t\thdmi->hdmiphy_clk = NULL;\n+\t\t}\n \t}\n \n \tif (hdmi->chip_data == &rk3568_chip_data) {\n", "prefixes": [ "v6", "phy-next", "12/28" ] }