From aa72f50e50d07eaa5232b1c9df9d6faa7a6d5d46 Mon Sep 17 00:00:00 2001
From: Hector Martin <marcan@marcan.st>
Date: Thu, 27 May 2021 21:10:00 +0900
Subject: [PATCH] iodev: Do not print leading * for empty buffer prints on alt
 path

Signed-off-by: Hector Martin <marcan@marcan.st>
---
 src/iodev.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/iodev.c b/src/iodev.c
index 86d77298..7acc15f7 100644
--- a/src/iodev.c
+++ b/src/iodev.c
@@ -83,9 +83,11 @@ int in_iodev = 0;
 void iodev_console_write(const void *buf, size_t length)
 {
     if (in_iodev || !is_primary_core()) {
-        iodev_write(IODEV_UART, "*", 1);
-        iodev_write(IODEV_UART, buf, length);
-        return;
+        if (length) {
+            iodev_write(IODEV_UART, "*", 1);
+            iodev_write(IODEV_UART, buf, length);
+            return;
+        }
     }
     in_iodev++;