Revert "Use a single libusb context"

This reverts commit c8a6dc6c23a5efe99b4bf937003ba3f2f7f8f200.

libusb on Windows isn't really safe to use from different threads
with a single context.

1 files changed, 0 insertions, 49 deletions

diff --git a/Source/Core/Common/LibusbContext.cpp b/Source/Core/Common/LibusbContext.cpp
deleted file mode 100644
index 1eb729c4a0..0000000000
--- a/Source/Core/Common/LibusbContext.cpp
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright 2017 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include <libusb.h>
-#include <memory>
-#include <mutex>
-
-#include "Common/LibusbContext.h"
-#include "Common/MsgHandler.h"
-#include "Common/StringUtil.h"
-
-namespace LibusbContext
-{
-static std::shared_ptr<libusb_context> s_libusb_context;
-static std::once_flag s_context_initialized;
-
-static libusb_context* Create()
-{
-  libusb_context* context;
-  const int ret = libusb_init(&context);
-  if (ret < LIBUSB_SUCCESS)
-  {
-    bool is_windows = false;
-#ifdef _WIN32
-    is_windows = true;
-#endif
-    const std::string reason =
-        is_windows && ret == LIBUSB_ERROR_NOT_FOUND ?
-            GetStringT("Failed to initialize libusb because usbdk is not installed.") :
-            StringFromFormat(GetStringT("Failed to initialize libusb (%s).").c_str(),
-                             libusb_error_name(ret));
-    PanicAlertT("%s\nSome USB features will not work.", reason.c_str());
-    return nullptr;
-  }
-  return context;
-}
-
-std::shared_ptr<libusb_context> Get()
-{
-  std::call_once(s_context_initialized, []() {
-    s_libusb_context.reset(Create(), [](auto* context) {
-      if (context != nullptr)
-        libusb_exit(context);
-    });
-  });
-  return s_libusb_context;
-}
-}