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GET /api/patches/2197123/?format=api
{ "id": 2197123, "url": "http://patchwork.ozlabs.org/api/patches/2197123/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260217063856.3759713-3-den@valinux.co.jp/", "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": "<20260217063856.3759713-3-den@valinux.co.jp>", "list_archive_url": null, "date": "2026-02-17T06:38:55", "name": "[v2,2/3] PCI: endpoint: pci-epf-test: Don't free doorbell IRQ unless requested", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "4c5e631dd131c2098196a4f664b97ca599deb136", "submitter": { "id": 91573, "url": "http://patchwork.ozlabs.org/api/people/91573/?format=api", "name": "Koichiro Den", "email": "den@valinux.co.jp" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260217063856.3759713-3-den@valinux.co.jp/mbox/", "series": [ { "id": 492380, "url": "http://patchwork.ozlabs.org/api/series/492380/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=492380", "date": "2026-02-17T06:38:53", "name": "PCI: endpoint: Doorbell-related fixes", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/492380/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2197123/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197123/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-47417-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": [ 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dkim=pass header.d=valinux.co.jp; arc=none" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=valinux.co.jp;\n s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=npCbKe5i1w0XZBvkSofaaLCJgUNyMfbyAz152+QMj30=;\n b=ceuxtfgny9laPxpmyyBiT4KFsMbbBXHSKT8bFONb2njIPKGTCOnaLuY2ZatpFQku1VH+KUojLBh58QcgBWj+5zjjGoypnfzGvqr9jCpFTTMAQyrVUI/QmLvkOEvzm2uyVWMfjRDxKTJaOZpnVfJUYQxpHTWTzHc98TDlGzrvIlg=", "From": "Koichiro Den <den@valinux.co.jp>", "To": "mani@kernel.org,\n\tkwilczynski@kernel.org,\n\tkishon@kernel.org,\n\tbhelgaas@google.com,\n\tjdmason@kudzu.us,\n\tdave.jiang@intel.com,\n\tallenbh@gmail.com,\n\tcassel@kernel.org,\n\tFrank.Li@nxp.com", "Cc": "linux-pci@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tntb@lists.linux.dev", "Subject": "[PATCH v2 2/3] PCI: endpoint: pci-epf-test: Don't free doorbell IRQ\n unless requested", "Date": "Tue, 17 Feb 2026 15:38:55 +0900", "Message-ID": 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"X-OriginatorOrg": "valinux.co.jp", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n e7e16a86-7325-4abf-7a8b-08de6def3e67", "X-MS-Exchange-CrossTenant-AuthSource": "TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "17 Feb 2026 06:39:04.5307\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "7a57bee8-f73d-4c5f-a4f7-d72c91c8c111", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n PUA9nrUWoeDkukmn7fTq6wSm+ATQ/EzYKz2Xt1sxpeRFs50c//pJzQLA0o15S2EId8j4eJDSvt64NMPPx7tPvg==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "TY4P286MB7477" }, "content": "pci_epf_test_doorbell_cleanup() unconditionally calls free_irq() for the\ndoorbell virq, which can trigger \"Trying to free already-free IRQ\"\nwarnings when the IRQ was never requested or when request_threaded_irq()\nfailed.\n\nMove free_irq() out of pci_epf_test_doorbell_cleanup() and invoke it\nonly after a successful request, so that free_irq() is not called for\nan unrequested IRQ.\n\nFixes: eff0c286aa91 (\"PCI: endpoint: pci-epf-test: Add doorbell test support\")\nSigned-off-by: Koichiro Den <den@valinux.co.jp>\n---\n drivers/pci/endpoint/functions/pci-epf-test.c | 8 +++++---\n 1 file changed, 5 insertions(+), 3 deletions(-)", "diff": "diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c\nindex 0cb7af0919dc..12705858e502 100644\n--- a/drivers/pci/endpoint/functions/pci-epf-test.c\n+++ b/drivers/pci/endpoint/functions/pci-epf-test.c\n@@ -715,7 +715,6 @@ static void pci_epf_test_doorbell_cleanup(struct pci_epf_test *epf_test)\n \tstruct pci_epf_test_reg *reg = epf_test->reg[epf_test->test_reg_bar];\n \tstruct pci_epf *epf = epf_test->epf;\n \n-\tfree_irq(epf->db_msg[0].virq, epf_test);\n \treg->doorbell_bar = cpu_to_le32(NO_BAR);\n \n \tpci_epf_free_doorbell(epf);\n@@ -759,7 +758,7 @@ static void pci_epf_test_enable_doorbell(struct pci_epf_test *epf_test,\n \t\t\t\t\t &epf_test->db_bar.phys_addr, &offset);\n \n \tif (ret)\n-\t\tgoto err_doorbell_cleanup;\n+\t\tgoto err_free_irq;\n \n \treg->doorbell_offset = cpu_to_le32(offset);\n \n@@ -769,12 +768,14 @@ static void pci_epf_test_enable_doorbell(struct pci_epf_test *epf_test,\n \n \tret = pci_epc_set_bar(epc, epf->func_no, epf->vfunc_no, &epf_test->db_bar);\n \tif (ret)\n-\t\tgoto err_doorbell_cleanup;\n+\t\tgoto err_free_irq;\n \n \tstatus |= STATUS_DOORBELL_ENABLE_SUCCESS;\n \treg->status = cpu_to_le32(status);\n \treturn;\n \n+err_free_irq:\n+\tfree_irq(epf->db_msg[0].virq, epf_test);\n err_doorbell_cleanup:\n \tpci_epf_test_doorbell_cleanup(epf_test);\n set_status_err:\n@@ -794,6 +795,7 @@ static void pci_epf_test_disable_doorbell(struct pci_epf_test *epf_test,\n \tif (bar < BAR_0)\n \t\tgoto set_status_err;\n \n+\tfree_irq(epf->db_msg[0].virq, epf_test);\n \tpci_epf_test_doorbell_cleanup(epf_test);\n \n \t/*\n", "prefixes": [ "v2", "2/3" ] }