There are two variables that indicate the interrupt type to be used in the next test execution, global "irq_type" and "test->irq_type".
The former is referenced from pci_endpoint_test_get_irq() to preserve the current type for ioctl(PCITEST_GET_IRQTYPE).
In the pci_endpoint_test_request_irq(), since this global variable is referenced when an error occurs, the unintended error message is displayed.
For example, after running "pcitest -i 2", the following message shows "MSI 3" even if the current IRQ type becomes "MSI-X":
pci-endpoint-test 0000:01:00.0: Failed to request IRQ 30 for MSI 3 SET IRQ TYPE TO MSI-X: NOT OKAY
Fix this issue by using "test->irq_type" instead of global "irq_type".
Cc: stable@vger.kernel.org Fixes: b2ba9225e031 ("misc: pci_endpoint_test: Avoid using module parameter to determine irqtype") Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Signed-off-by: Kunihiko Hayashi hayashi.kunihiko@socionext.com Link: https://lore.kernel.org/r/20250225110252.28866-4-hayashi.kunihiko@socionext.... [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org (cherry picked from commit 919d14603dab6a9cf03ebbeb2cfa556df48737c8) Signed-off-by: Kunihiko Hayashi hayashi.kunihiko@socionext.com --- drivers/misc/pci_endpoint_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 1da647257b37..fb8066d8d2e4 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -246,7 +246,7 @@ static bool pci_endpoint_test_request_irq(struct pci_endpoint_test *test) return true;
fail: - switch (irq_type) { + switch (test->irq_type) { case IRQ_TYPE_LEGACY: dev_err(dev, "Failed to request IRQ %d for Legacy\n", pci_irq_vector(pdev, i));