misc: pci_endpoint_test: Fix displaying 'irq_type' after 'request_irq' error

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.com
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 9e56d200d2f00785d7c51ff49272255acd9c0d6c..acf3d8dab131bcea605eaa82e79f9e1afd27f521 100644 (file)
--- 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));