Revert "Delay initial accept() until server initialized"

This reverts commit 4ad4a11aa8106d98f2b78e738d88996a1fbbcd4b.

Reason for revert: BUG: 144355953

Change-Id: Icb3d87e1f697ff60fc1262798cb19be8705e3740
diff --git a/adb/client/main.cpp b/adb/client/main.cpp
index 5669a01..0c5c28f 100644
--- a/adb/client/main.cpp
+++ b/adb/client/main.cpp
@@ -137,10 +137,9 @@
     auto start = std::chrono::steady_clock::now();
 
     // If we told a previous adb server to quit because of version mismatch, we can get to this
-    // point before it's finished exiting. Retry for a while to give it some time. Don't actually
-    // accept any connections until adb_wait_for_device_initialization finishes below.
-    while (install_listener(socket_spec, "*smartsocket*", nullptr, INSTALL_LISTENER_DISABLED,
-                            nullptr, &error) != INSTALL_STATUS_OK) {
+    // point before it's finished exiting. Retry for a while to give it some time.
+    while (install_listener(socket_spec, "*smartsocket*", nullptr, 0, nullptr, &error) !=
+           INSTALL_STATUS_OK) {
         if (std::chrono::steady_clock::now() - start > 0.5s) {
             LOG(FATAL) << "could not install *smartsocket* listener: " << error;
         }
@@ -161,14 +160,12 @@
             PLOG(FATAL) << "setsid() failed";
         }
 #endif
-    }
 
-    // Wait for the USB scan to complete before notifying the parent that we're up.
-    // We need to perform this in a thread, because we would otherwise block the event loop.
-    std::thread notify_thread([ack_reply_fd]() {
-        adb_wait_for_device_initialization();
+        // Wait for the USB scan to complete before notifying the parent that we're up.
+        // We need to perform this in a thread, because we would otherwise block the event loop.
+        std::thread notify_thread([ack_reply_fd]() {
+            adb_wait_for_device_initialization();
 
-        if (ack_reply_fd >= 0) {
             // Any error output written to stderr now goes to adb.log. We could
             // keep around a copy of the stderr fd and use that to write any errors
             // encountered by the following code, but that is probably overkill.
@@ -194,13 +191,9 @@
             }
             unix_close(ack_reply_fd);
 #endif
-        }
-        // We don't accept() client connections until this point: this way, clients
-        // can't see wonky state early in startup even if they're connecting directly
-        // to the server instead of going through the adb program.
-        fdevent_run_on_main_thread([] { enable_daemon_sockets(); });
-    });
-    notify_thread.detach();
+        });
+        notify_thread.detach();
+    }
 
 #if defined(__linux__)
     // Write our location to .android/adb.$PORT, so that older clients can exec us.