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-rw-r--r--src/include/device/pci_mmio_cfg.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/device/pci_mmio_cfg.h b/src/include/device/pci_mmio_cfg.h
index 89c99062d2..416444179f 100644
--- a/src/include/device/pci_mmio_cfg.h
+++ b/src/include/device/pci_mmio_cfg.h
@@ -31,6 +31,10 @@ union pci_bank {
#error "CONFIG_ECAM_MMCONF_BASE_ADDRESS undefined!"
#endif
+#if CONFIG_ECAM_MMCONF_BUS_NUMBER == 0
+#error "CONFIG_ECAM_MMCONF_BUS_NUMBER is undefined!"
+#endif
+
#if CONFIG_ECAM_MMCONF_BUS_NUMBER * MiB != CONFIG_ECAM_MMCONF_LENGTH
#error "CONFIG_ECAM_MMCONF_LENGTH does not correspond with CONFIG_ECAM_MMCONF_BUS_NUMBER!"
#endif