samd21: Fix up DMA driver

[fw/altos] / src / samd21 / ao_dma_samd21.h

diff --git a/src/samd21/ao_dma_samd21.h b/src/samd21/ao_dma_samd21.h
index 725e621a3a5d1377d588cbb185482f42e297213d..624e7a921e600baf228db97586edb72bf2b601f5 100644 (file)
--- a/src/samd21/ao_dma_samd21.h
+++ b/src/samd21/ao_dma_samd21.h
@@ -24,7 +24,7 @@ ao_dma_init(void);
 
 void
 _ao_dma_start_transfer(uint8_t         id,
-                      void             *src,
+                      const void       *src,
                       void             *dst,
                       uint16_t         count,
                       uint32_t         chctrlb,