6.14-stable review patch. If anyone has any objections, please let me know.
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From: Niklas Cassel cassel@kernel.org
[ Upstream commit af1451b6738ec7cf91f2914f53845424959ec4ee ]
Currently BARs that have been disabled by the endpoint controller driver will result in a test FAIL.
Returning FAIL for a BAR that is disabled seems overly pessimistic.
There are EPC that disables one or more BARs intentionally.
One reason for this is that there are certain EPCs that are hardwired to expose internal PCIe controller registers over a certain BAR, so the EPC driver disables such a BAR, such that the host will not overwrite random registers during testing.
Such a BAR will be disabled by the EPC driver's init function, and the BAR will be marked as BAR_RESERVED, such that it will be unavailable to endpoint function drivers.
Let's return FAIL only for BARs that are actually enabled and failed the test, and let's return skip for BARs that are not even enabled.
Signed-off-by: Niklas Cassel cassel@kernel.org Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Link: https://lore.kernel.org/r/20250123120147.3603409-4-cassel@kernel.org Signed-off-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/pci_endpoint/pci_endpoint_test.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c index c267b822c1081..576c590b277b1 100644 --- a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c +++ b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c @@ -65,6 +65,8 @@ TEST_F(pci_ep_bar, BAR_TEST) int ret;
pci_ep_ioctl(PCITEST_BAR, variant->barno); + if (ret == -ENODATA) + SKIP(return, "BAR is disabled"); EXPECT_FALSE(ret) TH_LOG("Test failed for BAR%d", variant->barno); }