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GET /api/1.0/patches/2197540/?format=api
{ "id": 2197540, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197540/?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": "<20260218-wakeirq_support-v7-1-0d4689830207@oss.qualcomm.com>", "date": "2026-02-18T08:12:23", "name": "[v7,1/3] PM: sleep: wakeirq: Add support for dedicated shared wake IRQ setup", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "48f28f4b676fe29071ecd2c5a91ec9627b8fc8f7", "submitter": { "id": 89908, "url": "http://patchwork.ozlabs.org/api/1.0/people/89908/?format=api", "name": "Krishna Chaitanya Chundru", "email": "krishna.chundru@oss.qualcomm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260218-wakeirq_support-v7-1-0d4689830207@oss.qualcomm.com/mbox/", "series": [ { "id": 492519, "url": "http://patchwork.ozlabs.org/api/1.0/series/492519/?format=api", "date": "2026-02-18T08:12:24", "name": "PCI: Add support for PCIe WAKE# interrupt", "version": 7, "mbox": "http://patchwork.ozlabs.org/series/492519/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197540/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-pci+bounces-47539-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=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=TzBeFqWA;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=LPr3YkpQ;\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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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260218-wakeirq_support-v7-1-0d4689830207@oss.qualcomm.com>", "References": "<20260218-wakeirq_support-v7-0-0d4689830207@oss.qualcomm.com>", "In-Reply-To": "<20260218-wakeirq_support-v7-0-0d4689830207@oss.qualcomm.com>", "To": "\"Rafael J. Wysocki\" <rafael@kernel.org>, Len Brown <lenb@kernel.org>,\n Pavel Machek <pavel@kernel.org>,\n Greg Kroah-Hartman <gregkh@linuxfoundation.org>,\n Danilo Krummrich <dakr@kernel.org>,\n Bjorn Helgaas <bhelgaas@google.com>,\n Bartosz Golaszewski <brgl@bgdev.pl>,\n Linus Walleij <linusw@kernel.org>,\n Bartosz Golaszewski <brgl@kernel.org>,\n Linus Walleij <linusw@kernel.org>", "Cc": "linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-pci@vger.kernel.org, linux-gpio@vger.kernel.org,\n quic_vbadigan@quicinc.com, quic_mrana@quicinc.com, sherry.sun@nxp.com,\n driver-core@lists.linux.dev,\n Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1771402347; l=4919;\n i=krishna.chundru@oss.qualcomm.com; s=20230907; h=from:subject:message-id;\n bh=zi60RThwEC6uT58cj6Q/kkhix9+cyecfzrsXBYVuP1k=;\n b=noK8LQipAKG2D7C1FRq6ywjqy7FzAkbdoYSMHusSRkOVbJWZkG8O8YGXJVGOnOPjcZDn+4PLL\n FA48oqomtubDXYh3Cim6SO/3o29N4jvqzUymr5+J38HDqDQfqXnQHmC", "X-Developer-Key": "i=krishna.chundru@oss.qualcomm.com; a=ed25519;\n pk=10CL2pdAKFyzyOHbfSWHCD0X0my7CXxj8gJScmn1FAg=", "X-Proofpoint-GUID": "w9S9gyTlU420Soh8OPAvuEXlGfMv1mtJ", "X-Proofpoint-ORIG-GUID": "w9S9gyTlU420Soh8OPAvuEXlGfMv1mtJ", "X-Authority-Analysis": "v=2.4 cv=P5k3RyAu c=1 sm=1 tr=0 ts=69957479 cx=c_pps\n a=cmESyDAEBpBGqyK7t0alAg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17\n a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10\n a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22\n a=EUspDBNiAAAA:8 a=VwQbUJbxAAAA:8 a=GqrSgIjjxmp09zFQf4gA:9 a=QEXdDO2ut3YA:10\n a=1OuFwYUASf3TG4hYMiVC:22", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMjE4MDA3MSBTYWx0ZWRfXy92xFAR7da4i\n i7G7An8b06yF3/pK+cT5+PBDHMul43WRIT6TAbOVOJ4kQsWEZdQoJ5/JbiAHXNAyY5Y1cK2zA2c\n 17WMDuRRq5vqTDS3x2cJhjz/c9ll6Wb9Px4gUMAIePGtyiH/GeFdeJZG7fCRJ6wR58yZw9NJ+5D\n G3y0DNLII/Hh4aS5p9RY/JHer1zok9jyoDyWWatHWev6XeBsADNpCnj2Pbvq8ShP0G6vGkl6T36\n ZQmHJ5j2J6UOrnIdvBTVz4q/69yPzFAgJWmmdRyAuZrDpXhFOwZHUe1vYCz6xbrSShmFONmdnDr\n gbbWTb8AMKh/YXaY7x0l+v9XhKXwizeCB1dubTF4fdEzjCIlvEMUodrtZeBU0a8ny/64o6Ib1jQ\n 6S+DvZsa1reqTEuCFoY7yjBUuz8zUKSpn/Cg1ut6+zyu3OeE5hXcGz42aflY/dOc5rgdbyce6X1\n KEc0QP5AsLJS1nlYizQ==", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-02-17_04,2026-02-16_04,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n adultscore=0 phishscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0\n bulkscore=0 spamscore=0 suspectscore=0 priorityscore=1501 malwarescore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602180071" }, "content": "Some devices require more flexibility when configuring their dedicated\nwake-up interrupts, such as support for IRQF_SHARED or other IRQ flags.\nThis is particularly useful in PCIe systems where multiple endpoints\n(e.g., Wi-Fi and Bluetooth controllers) share a common WAKE# signal\nline which requests platform to re-establish power and reference clocks\nto the components. In such cases, drivers can use this new API\ndev_pm_set_dedicated_shared_wake_irq() to register a shared wake IRQ.\n\nUpdate the internal helper __dev_pm_set_dedicated_wake_irq() to accept an\nirq_flags argument. Modify the existing dev_pm_set_dedicated_wake_irq()\nand dev_pm_set_dedicated_wake_irq_reverse() to preserve current behavior.\n\nWhen IRQ registered with IRQF_SHARED we can't use IRQF_NO_AUTOEN flag,\nso after registering for irq, disable it explicitly.\n\nSigned-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>\nAcked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>\n---\n drivers/base/power/wakeirq.c | 39 ++++++++++++++++++++++++++++++++++-----\n include/linux/pm_wakeirq.h | 6 ++++++\n 2 files changed, 40 insertions(+), 5 deletions(-)", "diff": "diff --git a/drivers/base/power/wakeirq.c b/drivers/base/power/wakeirq.c\nindex c0809d18fc5406b224206e0c8e5028aa8f4183b0..a3ac133496d1aadd31a2a9517322f4ff1c5be7b4 100644\n--- a/drivers/base/power/wakeirq.c\n+++ b/drivers/base/power/wakeirq.c\n@@ -171,7 +171,8 @@ static irqreturn_t handle_threaded_wake_irq(int irq, void *_wirq)\n \treturn IRQ_HANDLED;\n }\n \n-static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned int flag)\n+static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned int flag,\n+\t\t\t\t\t unsigned int irq_flags)\n {\n \tstruct wake_irq *wirq;\n \tint err;\n@@ -200,8 +201,7 @@ static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned\n \t * so we use a threaded irq.\n \t */\n \terr = request_threaded_irq(irq, NULL, handle_threaded_wake_irq,\n-\t\t\t\t IRQF_ONESHOT | IRQF_NO_AUTOEN,\n-\t\t\t\t wirq->name, wirq);\n+\t\t\t\t IRQF_ONESHOT | irq_flags, wirq->name, wirq);\n \tif (err)\n \t\tgoto err_free_name;\n \n@@ -237,7 +237,7 @@ static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned\n */\n int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)\n {\n-\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, 0);\n+\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, 0, IRQF_NO_AUTOEN);\n }\n EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_wake_irq);\n \n@@ -258,10 +258,39 @@ EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_wake_irq);\n */\n int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq)\n {\n-\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, WAKE_IRQ_DEDICATED_REVERSE);\n+\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, WAKE_IRQ_DEDICATED_REVERSE,\n+\t\t\t\t\t IRQF_NO_AUTOEN);\n }\n EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_wake_irq_reverse);\n \n+/**\n+ * dev_pm_set_dedicated_shared_wake_irq - Request a dedicated shared wake-up interrupt\n+ * @dev: Device entry\n+ * @irq: Device wake-up interrupt\n+ * @flags: Custom IRQ flags (e.g., IRQ_TYPE_EDGE_FALLING)\n+ *\n+ * This API sets up a threaded interrupt handler for a device that has\n+ * a shared wake-up interrupt in addition to the device IO interrupt. It also\n+ * sets IRQ flags like IRQ_TYPE_EDGE_FALLING passed by the caller.\n+ *\n+ * Returns 0 on success or a negative error code on failure.\n+ */\n+int dev_pm_set_dedicated_shared_wake_irq(struct device *dev, int irq, unsigned long flags)\n+{\n+\tstruct wake_irq *wirq;\n+\tint ret;\n+\n+\tret = __dev_pm_set_dedicated_wake_irq(dev, irq, 0, IRQF_SHARED | flags);\n+\tif (ret)\n+\t\treturn ret;\n+\n+\twirq = dev->power.wakeirq;\n+\tdisable_irq_nosync(wirq->irq);\n+\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_shared_wake_irq);\n+\n /**\n * dev_pm_enable_wake_irq_check - Checks and enables wake-up interrupt\n * @dev: Device\ndiff --git a/include/linux/pm_wakeirq.h b/include/linux/pm_wakeirq.h\nindex 25b63ed51b765c2c6919f259668a12675330835e..61f1e840745b56baa57db37563e450cb2d757a85 100644\n--- a/include/linux/pm_wakeirq.h\n+++ b/include/linux/pm_wakeirq.h\n@@ -11,6 +11,7 @@ extern int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq);\n extern int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq);\n extern void dev_pm_clear_wake_irq(struct device *dev);\n extern int devm_pm_set_wake_irq(struct device *dev, int irq);\n+extern int dev_pm_set_dedicated_shared_wake_irq(struct device *dev, int irq, unsigned long flags);\n \n #else\t/* !CONFIG_PM */\n \n@@ -38,5 +39,10 @@ static inline int devm_pm_set_wake_irq(struct device *dev, int irq)\n \treturn 0;\n }\n \n+static inline int dev_pm_set_dedicated_shared_wake_irq(struct device *dev,\n+\t\t\t\t\t\t int irq, unsigned long flags)\n+{\n+\treturn 0;\n+}\n #endif\t/* CONFIG_PM */\n #endif\t/* _LINUX_PM_WAKEIRQ_H */\n", "prefixes": [ "v7", "1/3" ] }