From 084091ac3b3e12ddca8e468315d3ebddc901422c Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Fri, 29 Aug 2025 01:29:41 +0600
Subject: [PATCH] Attempt to fix host serial passthrough on Linux

---
 src/unix/unix_serial_passthrough.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/unix/unix_serial_passthrough.c b/src/unix/unix_serial_passthrough.c
index 873c706b9..f6f953eee 100644
--- a/src/unix/unix_serial_passthrough.c
+++ b/src/unix/unix_serial_passthrough.c
@@ -57,8 +57,13 @@ plat_serpt_read(void *priv, uint8_t *data)
     fd_set                rdfds;
 
     switch (dev->mode) {
+        case SERPT_MODE_HOSTSER: {
+            if (read(dev->master_fd, data, 1) > 0) {
+                return 1;
+            }
+            return 0;
+        }
         case SERPT_MODE_VCON:
-        case SERPT_MODE_HOSTSER:
             FD_ZERO(&rdfds);
             FD_SET(dev->master_fd, &rdfds);
             tv.tv_sec  = 0;