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In pci-epf-test.c, set the STATUS_NO_RESOURCE status bit if pci_epc_set_bar() returns -ENOSPC. This status bit is used to indicate that there are not enough inbound window resources to allocate the subrange. In pci_endpoint_test.c, return -ENOSPC instead of -EIO when STATUS_NO_RESOURCE is set. In pci_endpoint_test.c, skip the BAR subrange test if -ENOSPC, i.e., there are not enough inbound window resources to run the test. Signed-off-by: Christian Bruel <[email protected]> [mani: commit log] Signed-off-by: Manivannan Sadhasivam <[email protected]> [bhelgaas: squash related commits] Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Niklas Cassel <[email protected]> Reviewed-by: Frank Li <[email protected]> Reviewed-by: Koichiro Den <[email protected]> Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-1-6f2e65f2298c@foss.st.com Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-2-6f2e65f2298c@foss.st.com Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-3-6f2e65f2298c@foss.st.com