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GET /api/patches/2216245/?format=api
{ "id": 2216245, "url": "http://patchwork.ozlabs.org/api/patches/2216245/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260326-pci-m2-e-v7-3-43324a7866e6@oss.qualcomm.com/", "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": "<20260326-pci-m2-e-v7-3-43324a7866e6@oss.qualcomm.com>", "list_archive_url": null, "date": "2026-03-26T08:06:31", "name": "[v7,3/8] serdev: Do not return -ENODEV from of_serdev_register_devices() if external connector is used", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "051720cfff19f1478b7d2ce68e9ba1dbe394660c", "submitter": { "id": 91277, "url": "http://patchwork.ozlabs.org/api/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/20260326-pci-m2-e-v7-3-43324a7866e6@oss.qualcomm.com/mbox/", "series": [ { "id": 497544, "url": "http://patchwork.ozlabs.org/api/series/497544/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=497544", "date": "2026-03-26T08:06:33", "name": "Add support for handling PCIe M.2 Key E connectors in devicetree", "version": 7, "mbox": "http://patchwork.ozlabs.org/series/497544/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216245/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216245/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-51150-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=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=TH1UAT5h;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1774512400; cv=none;\n b=TCSX1oQoSCUqvGN7wN9015NLJTWobWQpQ0HXhnJ6BHucQDyem0EAEIYx84uTohuNrWRcBPaDqqB9MdsgV4X9vTRtVNzfxBMqCfpSKWuhuseaR1exjC3S83Y26Sfyu4cly2iZ9RKnw8d1dYyPFc2V2yswZl8syTII60u9JeQQTW4=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1774512400; c=relaxed/simple;\n\tbh=JoCqd4qTmhZAw9Ra/kUSAYchs5sr6tzJ0I7Nt266T1c=;\n\th=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References:\n\t In-Reply-To:To:Cc;\n b=lKw+k21v0hRl8mix9vuts4GLB3m07jNZso2j4ZXtXIPe+z3wPFX5S99Dq3HfxaM4iycaCYCUo4wMIbPXDVj/T3AQQwsUNu3G5unCXr0OiP4bQ+6MwjRg97RJM190YDCbVqnJtMVStBJIgPzLolNxPxA/MIF9YNAk0FhOyw40UlY=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=TH1UAT5h; arc=none smtp.client-ip=10.30.226.201", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1774512400;\n\tbh=JoCqd4qTmhZAw9Ra/kUSAYchs5sr6tzJ0I7Nt266T1c=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From;\n\tb=TH1UAT5hzIgtdqv/6CWQQ0xP26ZPa7fOqg5OIO3UWuNlu6DFCBCUr7Oxx26nkmb9o\n\t 5xBCKvUhIP+6lg1yCGBHCBf19un3s/QXxmaH6tYeioz2az/zHTRu1HAkIyJxlcB1g7\n\t lP3vbLrpGIAAZXdN4B79V7R2f71WPR/7uQA4/qrsfAjhD87VFBF9DVHoCRjAFx4qrR\n\t FiauoA2W8iRRbOj7y2yK/6EjqH1sX+5nIAGcPQ9Z1VQrTDWwBx0NZ2HOYeLUo2P4FH\n\t TscDrsDCN8vr0m76+70UXWVNc9Fd5KMo5LdHuqVbhGmsB5BIw/K1lDnOLLgmEq09XN\n\t 6YMrbcMX2GxkQ==", "From": "Manivannan Sadhasivam via B4 Relay\n <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>", "Date": "Thu, 26 Mar 2026 13:36:31 +0530", "Subject": "[PATCH v7 3/8] serdev: Do not return -ENODEV from\n of_serdev_register_devices() if external connector is used", "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": "<20260326-pci-m2-e-v7-3-43324a7866e6@oss.qualcomm.com>", "References": "<20260326-pci-m2-e-v7-0-43324a7866e6@oss.qualcomm.com>", "In-Reply-To": "<20260326-pci-m2-e-v7-0-43324a7866e6@oss.qualcomm.com>", "To": "Rob Herring <robh@kernel.org>,\n Greg Kroah-Hartman <gregkh@linuxfoundation.org>,\n Jiri Slaby <jirislaby@kernel.org>, Nathan Chancellor <nathan@kernel.org>,\n Nicolas Schier <nicolas.schier@linux.dev>, Hans de Goede <hansg@kernel.org>,\n =?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>,\n Mark Pearson <mpearson-lenovo@squebb.ca>,\n \"Derek J. Clark\" <derekjohn.clark@gmail.com>,\n Manivannan Sadhasivam <mani@kernel.org>,\n Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Conor Dooley <conor+dt@kernel.org>, Marcel Holtmann <marcel@holtmann.org>,\n Luiz Augusto von Dentz <luiz.dentz@gmail.com>,\n Bartosz Golaszewski <brgl@bgdev.pl>,\n Andy Shevchenko <andriy.shevchenko@linux.intel.com>,\n Bartosz Golaszewski <brgl@kernel.org>", "Cc": "linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-kbuild@vger.kernel.org, platform-driver-x86@vger.kernel.org,\n linux-pci@vger.kernel.org, devicetree@vger.kernel.org,\n linux-arm-msm@vger.kernel.org, linux-bluetooth@vger.kernel.org,\n linux-pm@vger.kernel.org, Stephan Gerhold <stephan.gerhold@linaro.org>,\n Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,\n linux-acpi@vger.kernel.org,\n Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>,\n Hans de Goede <johannes.goede@oss.qualcomm.com>,\n Bartosz Golaszewski <brgl@kernel.org>", "X-Mailer": "b4 0.15.0", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=1461;\n i=manivannan.sadhasivam@oss.qualcomm.com; h=from:subject:message-id;\n bh=9JYNk+DMPq2LlZQfTiexJ4EeAYXDboalcaCh+TYovs0=;\n b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBpxOkNuIrEkkiuiXa2nFEPz20NZFPny5rmu3war\n entKs5o9PaJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCacTpDQAKCRBVnxHm/pHO\n 9XugB/0QT6xqMW6JkOSh7MAySgoIlQcmUPLNlWIwqE4SlCb7Rn3yZ7WFiAQq4NvkfO3qN8ZyH3t\n PsR5Q/7sy7CeFTRCM9adFS0899s58LIfq4dGt9GHpFVGfQZHzJOMQzJCbByGAcUcuD8P+01yv/O\n W0WqoVSvkm1KwNaNLPYVSnsUumUH3ASPr6mORH0oQ0VFadER5w9P7LDbZEH+h3nj12e/6nqLpof\n RVJsmFEijW2PKWBJIXUbz2fxEyvVOvk69DoDbYp18HKimHBxrs/Od8OkCVCx838Z+4vaZPLcpCA\n 1cdOHfrTSCosxy2yOc/OurPLu3S6UPc6WYMx3sceBvuMLy0s", "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\nIf an external connector like M.2 is connected to the serdev controller\nin DT, then the serdev devices may be created dynamically by the connector\ndriver. So do not return -ENODEV from of_serdev_register_devices() if the\nstatic nodes are not found and the graph node is used.\n\nTested-by: Hans de Goede <johannes.goede@oss.qualcomm.com> # ThinkPad T14s gen6 (arm64)\nReviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>\nSigned-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>\n---\n drivers/tty/serdev/core.c | 9 ++++++++-\n 1 file changed, 8 insertions(+), 1 deletion(-)", "diff": "diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c\nindex bf88b95f7458..e9d044a331b0 100644\n--- a/drivers/tty/serdev/core.c\n+++ b/drivers/tty/serdev/core.c\n@@ -12,6 +12,7 @@\n #include <linux/kernel.h>\n #include <linux/module.h>\n #include <linux/of.h>\n+#include <linux/of_graph.h>\n #include <linux/of_device.h>\n #include <linux/pm_domain.h>\n #include <linux/pm_runtime.h>\n@@ -561,7 +562,13 @@ static int of_serdev_register_devices(struct serdev_controller *ctrl)\n \t\t} else\n \t\t\tfound = true;\n \t}\n-\tif (!found)\n+\n+\t/*\n+\t * When the serdev controller is connected to an external connector like\n+\t * M.2 in DT, then the serdev devices may be created dynamically by the\n+\t * connector driver.\n+\t */\n+\tif (!found && !of_graph_is_present(dev_of_node(&ctrl->dev)))\n \t\treturn -ENODEV;\n \n \treturn 0;\n", "prefixes": [ "v7", "3/8" ] }