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If the number of available inbound ATU entries is insufficient to map the subrange, skip the test instead of failing. Link: https://lore.kernel.org/linux-pci/20260317152707.GA85951@bhelgaas/T/#= m87e4c24173097a0ea70195b71aab294ad8d6c283 Signed-off-by: Christian Bruel --- 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/too= ls/testing/selftests/pci_endpoint/pci_endpoint_test.c index c417fb3a198b2d92c3060938c23807cc8bea5573..8ea2fda4539d11eb22b22800a7c= b8bbaa99c91ba 100644 --- a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c +++ b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c @@ -88,6 +88,8 @@ TEST_F(pci_ep_bar, BAR_SUBRANGE_TEST) SKIP(return, "Subrange map is not supported"); if (ret =3D=3D -ENOBUFS) SKIP(return, "BAR is reserved"); + if (ret =3D=3D -ENOSPC) + SKIP(return, "Not enough ATU entries to allocate subrange"); EXPECT_FALSE(ret) TH_LOG("Test failed for BAR%d", variant->barno); } =20 --=20 2.34.1 From nobody Mon Apr 6 17:29:04 2026 Received: from AS8PR04CU009.outbound.protection.outlook.com (mail-westeuropeazon11011000.outbound.protection.outlook.com [52.101.70.0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 472D03DEFF6; 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This can be used to skip the subrange test if there is not enough iATU resources to allocate it. Link: https://lore.kernel.org/linux-pci/20260317152707.GA85951@bhelgaas/T/#= m87e4c24173097a0ea70195b71aab294ad8d6c283 Signed-off-by: Christian Bruel --- drivers/pci/endpoint/functions/pci-epf-test.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/en= dpoint/functions/pci-epf-test.c index 14e61ebe1f116ce04789b6f4c3e965296701ec53..6437f08f0cd4bd4645e380c915b= 7cf81e66b7c35 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -54,6 +54,7 @@ #define STATUS_BAR_SUBRANGE_SETUP_FAIL BIT(15) #define STATUS_BAR_SUBRANGE_CLEAR_SUCCESS BIT(16) #define STATUS_BAR_SUBRANGE_CLEAR_FAIL BIT(17) +#define STATUS_BAR_SUBRANGE_SETUP_NOSPC BIT(18) =20 #define FLAG_USE_DMA BIT(0) =20 @@ -903,6 +904,8 @@ static void pci_epf_test_bar_subrange_setup(struct pci_= epf_test *epf_test, dev_err(&epf->dev, "pci_epc_set_bar() failed: %d\n", ret); bar->submap =3D old_submap; bar->num_submap =3D old_nsub; 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This signifies to the pci_endpoint test to skip this test instead of reporting a failure. Link: https://lore.kernel.org/linux-pci/20260317152707.GA85951@bhelgaas/T/#= m87e4c24173097a0ea70195b71aab294ad8d6c283 Signed-off-by: Christian Bruel --- drivers/misc/pci_endpoint_test.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_t= est.c index 55e128ed82f00ae13b6fe9768cdbe56adbe8f9da..34ba06fb53f04e48c1c05f4aae8= 5e6ecd03ef447 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -61,6 +61,7 @@ #define STATUS_BAR_SUBRANGE_SETUP_FAIL BIT(15) #define STATUS_BAR_SUBRANGE_CLEAR_SUCCESS BIT(16) #define STATUS_BAR_SUBRANGE_CLEAR_FAIL BIT(17) +#define STATUS_BAR_SUBRANGE_SETUP_NOSPC BIT(18) =20 #define PCI_ENDPOINT_TEST_LOWER_SRC_ADDR 0x0c #define PCI_ENDPOINT_TEST_UPPER_SRC_ADDR 0x10 @@ -476,8 +477,11 @@ static int pci_endpoint_test_bar_subrange_cmd(struct p= ci_endpoint_test *test, return -ETIMEDOUT; =20 status =3D pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS); - if (status & fail_bit) + if (status & fail_bit) { + if (status & STATUS_BAR_SUBRANGE_SETUP_NOSPC) + return -ENOSPC; return -EIO; + } =20 if (!(status & ok_bit)) return -EIO; --=20 2.34.1