3 files changed, 4 insertions, 6 deletions
diff --git a/src/modules/px4iofirmware/protocol.h b/src/modules/px4iofirmware/protocol.h
index 7471faec7..d5a6b1ec4 100644
--- a/src/modules/px4iofirmware/protocol.h
+++ b/src/modules/px4iofirmware/protocol.h
@@ -312,7 +312,7 @@ struct IOPacket {
 
 #define PKT_COUNT(_p)	((_p).count_code & PKT_COUNT_MASK)
 #define PKT_CODE(_p)	((_p).count_code & PKT_CODE_MASK)
-#define PKT_SIZE(_p)	((uint8_t *)&((_p).regs[PKT_COUNT(_p)]) - ((uint8_t *)&(_p)))
+#define PKT_SIZE(_p)	((size_t)((uint8_t *)&((_p).regs[PKT_COUNT(_p)]) - ((uint8_t *)&(_p))))
 
 static const uint8_t crc8_tab[256] __attribute__((unused)) =
 {
diff --git a/src/modules/px4iofirmware/px4io.c b/src/modules/px4iofirmware/px4io.c
index d4c25911e..cd134ccb4 100644
--- a/src/modules/px4iofirmware/px4io.c
+++ b/src/modules/px4iofirmware/px4io.c
@@ -37,6 +37,7 @@
  */
 
 #include <nuttx/config.h>
+#include <nuttx/arch.h>
 
 #include <stdio.h>	// required for task_create
 #include <stdbool.h>
@@ -303,14 +304,12 @@ user_start(int argc, char *argv[])
 		 */
 		if (hrt_absolute_time() - last_debug_time > (1000 * 1000)) {
 
-			struct mallinfo minfo = mallinfo();
-
 			isr_debug(1, "d:%u s=0x%x a=0x%x f=0x%x m=%u", 
 				  (unsigned)r_page_setup[PX4IO_P_SETUP_SET_DEBUG],
 				  (unsigned)r_status_flags,
 				  (unsigned)r_setup_arming,
 				  (unsigned)r_setup_features,
-				  (unsigned)minfo.mxordblk);
+				  (unsigned)mallinfo().mxordblk);
 			last_debug_time = hrt_absolute_time();
 		}
 	}
diff --git a/src/modules/px4iofirmware/registers.c b/src/modules/px4iofirmware/registers.c
index db1836f4a..50108ea1b 100644
--- a/src/modules/px4iofirmware/registers.c
+++ b/src/modules/px4iofirmware/registers.c
@@ -119,7 +119,6 @@ uint16_t		r_page_raw_rc_input[] =
 	[PX4IO_P_RAW_RC_DATA]			= 0,
 	[PX4IO_P_RAW_FRAME_COUNT]		= 0,
 	[PX4IO_P_RAW_LOST_FRAME_COUNT]		= 0,
-	[PX4IO_P_RAW_RC_DATA]			= 0,
 	[PX4IO_P_RAW_RC_BASE ... (PX4IO_P_RAW_RC_BASE + PX4IO_RC_INPUT_CHANNELS)] = 0
 };
 
@@ -670,7 +669,7 @@ registers_set_one(uint8_t page, uint8_t offset, uint16_t value)
 
 				if (conf[PX4IO_P_RC_CONFIG_ASSIGNMENT] == UINT8_MAX) {
 					disabled = true;
-				} else if ((int)(conf[PX4IO_P_RC_CONFIG_ASSIGNMENT]) < 0 || conf[PX4IO_P_RC_CONFIG_ASSIGNMENT] >= PX4IO_RC_MAPPED_CONTROL_CHANNELS) {
+				} else if (conf[PX4IO_P_RC_CONFIG_ASSIGNMENT] >= PX4IO_RC_MAPPED_CONTROL_CHANNELS) {
 					count++;
 				}