From 5c33db422053f63bb4b5aae1ea82855a9fb75512 Mon Sep 17 00:00:00 2001
From: ligd <liguiding1@xiaomi.com>
Date: Tue, 12 Apr 2022 15:35:26 +0800
Subject: [PATCH] syslog_rpmsg: head must bigger then tail when
 syslog_rpmsg_init

Signed-off-by: ligd <liguiding1@xiaomi.com>
---
 drivers/syslog/syslog_rpmsg.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/syslog/syslog_rpmsg.c b/drivers/syslog/syslog_rpmsg.c
index 271d5a122f..bb5e702358 100644
--- a/drivers/syslog/syslog_rpmsg.c
+++ b/drivers/syslog/syslog_rpmsg.c
@@ -420,6 +420,10 @@ void syslog_rpmsg_init_early(FAR void *buffer, size_t size)
     {
       priv->head = priv->tail = 0;
     }
+  else if (priv->head < priv->tail)
+    {
+      priv->head += priv->size;
+    }
 }
 
 int syslog_rpmsg_init(void)