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 pci_endpoint_test_request_irq(), since this global variable is referenced when an error occurs, the unintended error message is displayed.
For example, the following message shows "MSI 3" even if the current irq type becomes "MSI-X".
# pcitest -i 2 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 --- 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 9e56d200d2f0..acf3d8dab131 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -242,7 +242,7 @@ static int pci_endpoint_test_request_irq(struct pci_endpoint_test *test) return 0;
fail: - switch (irq_type) { + switch (test->irq_type) { case IRQ_TYPE_INTX: dev_err(dev, "Failed to request IRQ %d for Legacy\n", pci_irq_vector(pdev, i));