From 4995a2a54d8d1f549938de3b713d7ed92aaf681c Mon Sep 17 00:00:00 2001
From: lixin <3531982712@qq.com>
Date: Tue, 22 Apr 2025 14:11:41 +0800
Subject: [PATCH] feat(adbd): adbd always tries to configure usb gadget in host
 mode.

---
 packages/modules/adb/daemon/usb.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/packages/modules/adb/daemon/usb.cpp b/packages/modules/adb/daemon/usb.cpp
index f9e085fbae5..71d13d8f502 100644
--- a/packages/modules/adb/daemon/usb.cpp
+++ b/packages/modules/adb/daemon/usb.cpp
@@ -45,6 +45,8 @@
 #include <android-base/parsebool.h>
 #include <android-base/properties.h>
 #include <android-base/thread_annotations.h>
+#include <android-base/file.h>
+#include <android-base/strings.h> 
 
 #include "adb_unique_fd.h"
 #include "adb_utils.h"
@@ -262,6 +264,13 @@ struct UsbFfsConnection : public Connection {
             bool enabled = false;
             bool running = true;
             while (running) {
+                std::string mode;
+
+	        if (android::base::ReadFileToString("/sys/kernel/debug/usb/23000000.usb/mode", &mode)) {
+                    mode = android::base::Trim(mode);
+                    if (mode == "host") continue;
+                }
+	
                 adb_pollfd pfd[2] = {
                   { .fd = control_fd_.get(), .events = POLLIN, .revents = 0 },
                   { .fd = monitor_event_fd_.get(), .events = POLLIN, .revents = 0 },
-- 
2.17.1