From 555e378ca7658e817986e18e4a3f214a7fac60ad Mon Sep 17 00:00:00 2001
From: Patrick Delaunay <patrick.delaunay@st.com>
Date: Fri, 3 Aug 2018 13:38:45 +0200
Subject: [PATCH] cli: handle getch error

Handle getch error (when getch return 0x0) to avoid display issue
in the console.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
---
 common/cli_readline.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/cli_readline.c b/common/cli_readline.c
index 60a232b..99b6317 100644
--- a/common/cli_readline.c
+++ b/common/cli_readline.c
@@ -273,6 +273,10 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len,
 
 		ichar = getcmd_getch();
 
+		/* ichar=0x0 when error occurs in U-Boot getc */
+		if (!ichar)
+			continue;
+
 		if ((ichar == '\n') || (ichar == '\r')) {
 			putc('\n');
 			break;