altos/stm: Make ao_spi_duplex out pointer const

[fw/altos] / src / stm / ao_spi_stm.c

diff --git a/src/stm/ao_spi_stm.c b/src/stm/ao_spi_stm.c
index 214092f6bb75922ca075bd404766416b650637e1..91e19adf4056010ec540e8709894553ac15b753f 100644 (file)
--- a/src/stm/ao_spi_stm.c
+++ b/src/stm/ao_spi_stm.c
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -305,7 +306,7 @@ ao_spi_recv(void *block, uint16_t len, uint8_t spi_index)
 }
 
 void
-ao_spi_duplex(void *out, void *in, uint16_t len, uint8_t spi_index)
+ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index)
 {
        uint8_t         id = AO_SPI_INDEX(spi_index);
        struct stm_spi  *stm_spi = ao_spi_stm_info[id].stm_spi;