X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/94e0a0058a33d09cc83be94d32dcc7ab9e2eb61a..65644164792c3eaa9214c5abcb62052ca6ea2344:/LUFA/Drivers/USB/Class/Device/MassStorage.c

diff --git a/LUFA/Drivers/USB/Class/Device/MassStorage.c b/LUFA/Drivers/USB/Class/Device/MassStorage.c
index 9d5ff7d20..7586c2812 100644
--- a/LUFA/Drivers/USB/Class/Device/MassStorage.c
+++ b/LUFA/Drivers/USB/Class/Device/MassStorage.c
@@ -61,6 +61,7 @@ void MS_Device_ProcessControlRequest(USB_ClassInfo_MS_Device_t* const MSInterfac
 			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 			{
 				Endpoint_ClearSETUP();
+				while (!(Endpoint_IsINReady()));
 				Endpoint_Write_8(MSInterfaceInfo->Config.TotalLUNs - 1);
 				Endpoint_ClearIN();
 				Endpoint_ClearStatusStage();