sercomm_cons: allocate 252 bytes net data size plus 4 bytes headroom

2 files changed, 2 insertions, 2 deletions

diff --git a/src/target/firmware/include/comm/sercomm.h b/src/target/firmware/include/comm/sercomm.h
index 718e12ab..7836b552 100644
--- a/src/target/firmware/include/comm/sercomm.h
+++ b/src/target/firmware/include/comm/sercomm.h
@@ -51,7 +51,7 @@ int sercomm_drv_rx_char(uint8_t ch);
 
 static inline struct msgb *sercomm_alloc_msgb(unsigned int len)
 {
-	return msgb_alloc_headroom(len, 4, "sercomm_tx");
+	return msgb_alloc_headroom(len+4, 4, "sercomm_tx");
 }
 
 #endif /* _SERCOMM_H */
diff --git a/src/target/firmware/include/comm/sercomm_cons.h b/src/target/firmware/include/comm/sercomm_cons.h
index 11f66545..9682a998 100644
--- a/src/target/firmware/include/comm/sercomm_cons.h
+++ b/src/target/firmware/include/comm/sercomm_cons.h
@@ -2,7 +2,7 @@
 #define _SERCOMM_CONS_H
 
 /* how large buffers do we allocate? */
-#define SERCOMM_CONS_ALLOC	256
+#define SERCOMM_CONS_ALLOC	(256-4)
 
 int sercomm_puts(const char *s);
 int sercomm_putchar(int c);