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-rw-r--r--pcilib/pcilib.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/pcilib/pcilib.h b/pcilib/pcilib.h
index 776a5c5..fbab883 100644
--- a/pcilib/pcilib.h
+++ b/pcilib/pcilib.h
@@ -185,6 +185,7 @@ typedef struct {
#define PCILIB_DMA_FLAGS_DEFAULT ((pcilib_dma_flags_t)0)
#define PCILIB_DMA_ENGINE_ADDR_INVALID ((pcilib_dma_engine_addr_t)-1)
#define PCILIB_REGISTER_INVALID ((pcilib_register_t)-1)
+#define PCILIB_REGISTER_ADDRESS_INVALID ((pcilib_register_addr_t)-1)
#define PCILIB_ADDRESS_INVALID ((uintptr_t)-1)
#define PCILIB_EVENT0 1
#define PCILIB_EVENT1 2