From 2c8fdd7aea1d3c6c380ea5b5080147dc7fe9c38f Mon Sep 17 00:00:00 2001
From: Gregor Herburger <gregor.herburger@linutronix.de>
Date: Mon, 13 Apr 2026 17:24:53 +0200
Subject: console: add console_flush_stdin()

Add a common helper console_flush_stdin() to drain all pending
characters from stdin. This consolidates the open-coded
while (tstc()) getchar() pattern that appeared in multiple places
across the tree.

Signed-off-by: Gregor Herburger <gregor.herburger@linutronix.de>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 lib/efi_loader/efi_console.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'lib')

diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
index a798d5604a3..8d076058280 100644
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -9,6 +9,7 @@
 
 #include <ansi.h>
 #include <charset.h>
+#include <console.h>
 #include <efi_device_path.h>
 #include <malloc.h>
 #include <time.h>
@@ -299,8 +300,7 @@ static int query_console_serial(int *rows, int *cols)
 	int n[2];
 
 	/* Empty input buffer */
-	while (tstc())
-		getchar();
+	console_flush_stdin();
 
 	/*
 	 * Not all terminals understand CSI [18t for querying the console size.
@@ -960,8 +960,7 @@ static void efi_cin_check(void)
  */
 static void efi_cin_empty_buffer(void)
 {
-	while (tstc())
-		getchar();
+	console_flush_stdin();
 	key_available = false;
 }
 
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