From 57158285a1b5135dc94af6ae37137ffc41b12f78 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mikolai=20G=C3=BCtschow?= <mikolai.guetschow@tu-dresden.de>
Date: Mon, 25 Nov 2024 16:19:34 +0100
Subject: [PATCH] sys/stdio: stdio_available is always false with missing stdin
 module

---
 sys/stdio/stdio.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/stdio/stdio.c b/sys/stdio/stdio.c
index 11fb6c5cf7..4fe196113d 100644
--- a/sys/stdio/stdio.c
+++ b/sys/stdio/stdio.c
@@ -75,6 +75,9 @@ ssize_t stdio_read(void* buffer, size_t len)
 MAYBE_WEAK
 int stdio_available(void)
 {
+    if (!IS_USED(MODULE_STDIN)) {
+        return 0;
+    }
     return tsrb_avail(&stdin_isrpipe.tsrb);
 }
 #endif