fix build warnings

1 files changed, 3 insertions, 3 deletions

diff --git a/src/host/hcd.h b/src/host/hcd.h
index 5a3b0a087..3355c18b2 100644
--- a/src/host/hcd.h
+++ b/src/host/hcd.h
@@ -110,15 +110,15 @@ typedef struct
 
 // clean/flush data cache: write cache -> memory.
 // Required before an DMA TX transfer to make sure data is in memory
-void hcd_dcache_clean(void* addr, uint32_t data_size) TU_ATTR_WEAK;
+void hcd_dcache_clean(void const* addr, uint32_t data_size) TU_ATTR_WEAK;
 
 // invalidate data cache: mark cache as invalid, next read will read from memory
 // Required BOTH before and after an DMA RX transfer
-void hcd_dcache_invalidate(void* addr, uint32_t data_size) TU_ATTR_WEAK;
+void hcd_dcache_invalidate(void const* addr, uint32_t data_size) TU_ATTR_WEAK;
 
 // clean and invalidate data cache
 // Required before an DMA transfer where memory is both read/write by DMA
-void hcd_dcache_clean_invalidate(void* addr, uint32_t data_size) TU_ATTR_WEAK;
+void hcd_dcache_clean_invalidate(void const* addr, uint32_t data_size) TU_ATTR_WEAK;
 
 //--------------------------------------------------------------------+
 // Controller API