5.4-stable review patch. If anyone has any objections, please let me know.
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From: Kunihiko Hayashi hayashi.kunihiko@socionext.com
commit baaef0a274cfb75f9b50eab3ef93205e604f662c upstream.
There are two variables that indicate the interrupt type to be used in the next test execution, "irq_type" as global and "test->irq_type".
The global is referenced from pci_endpoint_test_get_irq() to preserve the current type for ioctl(PCITEST_GET_IRQTYPE).
The type set in this function isn't reflected in the global "irq_type", so ioctl(PCITEST_GET_IRQTYPE) returns the previous type.
As a result, the wrong type is displayed in old version of "pcitest" as follows:
- Result of running "pcitest -i 0"
SET IRQ TYPE TO LEGACY: OKAY
- Result of running "pcitest -I"
GET IRQ TYPE: MSI
Whereas running the new version of "pcitest" in kselftest results in an error as follows:
# RUN pci_ep_basic.LEGACY_IRQ_TEST ... # pci_endpoint_test.c:104:LEGACY_IRQ_TEST:Expected 0 (0) == ret (1) # pci_endpoint_test.c:104:LEGACY_IRQ_TEST:Can't get Legacy IRQ type
Fix this issue by propagating the current type to the global "irq_type".
Fixes: b2ba9225e031 ("misc: pci_endpoint_test: Avoid using module parameter to determine irqtype") Signed-off-by: Kunihiko Hayashi hayashi.kunihiko@socionext.com [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org Reviewed-by: Niklas Cassel cassel@kernel.org Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250225110252.28866-5-hayashi.kunihiko@socionext.... Signed-off-by: Kunihiko Hayashi hayashi.kunihiko@socionext.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/misc/pci_endpoint_test.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -577,6 +577,7 @@ static bool pci_endpoint_test_set_irq(st if (!pci_endpoint_test_request_irq(test)) goto err;
+ irq_type = test->irq_type; return true;
err: