{"id":2197123,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2197123/?format=json","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/1.0/projects/28/?format=json","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":"<20260217063856.3759713-3-den@valinux.co.jp>","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/1.0/people/91573/?format=json","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/1.0/series/492380/?format=json","date":"2026-02-17T06:38:53","name":"PCI: endpoint: Doorbell-related fixes","version":2,"mbox":"http://patchwork.ozlabs.org/series/492380/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2197123/checks/","tags":{},"headers":{"Return-Path":"\n ","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 (1024-bit key;\n unprotected) header.d=valinux.co.jp header.i=@valinux.co.jp\n header.a=rsa-sha256 header.s=selector1 header.b=ceuxtfgn;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n 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bh=npCbKe5i1w0XZBvkSofaaLCJgUNyMfbyAz152+QMj30=;\n b=ceuxtfgny9laPxpmyyBiT4KFsMbbBXHSKT8bFONb2njIPKGTCOnaLuY2ZatpFQku1VH+KUojLBh58QcgBWj+5zjjGoypnfzGvqr9jCpFTTMAQyrVUI/QmLvkOEvzm2uyVWMfjRDxKTJaOZpnVfJUYQxpHTWTzHc98TDlGzrvIlg=","From":"Koichiro Den ","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":"<20260217063856.3759713-3-den@valinux.co.jp>","X-Mailer":"git-send-email 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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 \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"]}