1 files changed, 10 insertions, 3 deletions
diff --git a/Kernel/Bus/USB/USBTransfer.cpp b/Kernel/Bus/USB/USBTransfer.cpp
index e3a0e75d3b..ada524d4f0 100644
--- a/Kernel/Bus/USB/USBTransfer.cpp
+++ b/Kernel/Bus/USB/USBTransfer.cpp
@@ -9,15 +9,16 @@
 
 namespace Kernel::USB {
 
-ErrorOr<NonnullLockRefPtr<Transfer>> Transfer::try_create(Pipe& pipe, u16 length, Memory::Region& dma_buffer)
+ErrorOr<NonnullLockRefPtr<Transfer>> Transfer::create(Pipe& pipe, u16 length, Memory::Region& dma_buffer, USBAsyncCallback callback)
 {
-    return adopt_nonnull_lock_ref_or_enomem(new (nothrow) Transfer(pipe, length, dma_buffer));
+    return adopt_nonnull_lock_ref_or_enomem(new (nothrow) Transfer(pipe, length, dma_buffer, move(callback)));
 }
 
-Transfer::Transfer(Pipe& pipe, u16 len, Memory::Region& dma_buffer)
+Transfer::Transfer(Pipe& pipe, u16 len, Memory::Region& dma_buffer, USBAsyncCallback callback)
     : m_pipe(pipe)
     , m_dma_buffer(dma_buffer)
     , m_transfer_data_size(len)
+    , m_callback(move(callback))
 {
 }
 
@@ -49,4 +50,10 @@ ErrorOr<void> Transfer::write_buffer(u16 len, void* data)
     return {};
 }
 
+void Transfer::invoke_async_callback()
+{
+    if (m_callback)
+        m_callback(this);
+}
+
 }