From: Christian Bruel Date: Mon, 4 Aug 2025 17:09:14 +0000 (+0200) Subject: misc: pci_endpoint_test: Skip IRQ tests if irq is out of range X-Git-Tag: v6.18-rc1~60^2~18^2~9 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cc8e391067164f45f89b6132a5aaa18c33a0e32b;p=thirdparty%2Flinux.git misc: pci_endpoint_test: Skip IRQ tests if irq is out of range The pci_endpoint_test tests the 32-bit MSI range. However, the device might not have all vectors configured. For example, if msi_interrupts is 8 in the ep function space or if the MSI Multiple Message Capable value is configured as 4 (maximum 16 vectors). In this case, do not attempt to run the test to avoid timeouts and directly return the error value. Signed-off-by: Christian Bruel Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250804170916.3212221-2-christian.bruel@foss.st.com --- diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index f935175d8bf55..506a2847e5d22 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -436,7 +436,11 @@ static int pci_endpoint_test_msi_irq(struct pci_endpoint_test *test, { struct pci_dev *pdev = test->pdev; u32 val; - int ret; + int irq; + + irq = pci_irq_vector(pdev, msi_num - 1); + if (irq < 0) + return irq; pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, msix ? PCITEST_IRQ_TYPE_MSIX : @@ -450,11 +454,7 @@ static int pci_endpoint_test_msi_irq(struct pci_endpoint_test *test, if (!val) return -ETIMEDOUT; - ret = pci_irq_vector(pdev, msi_num - 1); - if (ret < 0) - return ret; - - if (ret != test->last_irq) + if (irq != test->last_irq) return -EIO; return 0;