X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/7166c7ba3e27f3458b83360302c8af8a866f7a34..accadba2dda2614d6a6669cb7eba9d8357274bfe:/LUFA/Drivers/USB/Class/Host/MIDI.c

diff --git a/LUFA/Drivers/USB/Class/Host/MIDI.c b/LUFA/Drivers/USB/Class/Host/MIDI.c
index 6f34933fb..3d844c2b3 100644
--- a/LUFA/Drivers/USB/Class/Host/MIDI.c
+++ b/LUFA/Drivers/USB/Class/Host/MIDI.c
@@ -40,38 +40,31 @@ uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceI
                                  uint16_t ConfigDescriptorSize,
                                  void* ConfigDescriptorData)
 {
-	USB_Descriptor_Endpoint_t* DataINEndpoint  = NULL;
-	USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
+	USB_Descriptor_Endpoint_t*  DataINEndpoint  = NULL;
+	USB_Descriptor_Endpoint_t*  DataOUTEndpoint = NULL;
+	USB_Descriptor_Interface_t* MIDIInterface   = NULL;
 
 	memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));
 
 	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
 	  return MIDI_ENUMERROR_InvalidConfigDescriptor;
 
-	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
-	                              DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
-	{
-		return MIDI_ENUMERROR_NoCompatibleInterfaceFound;
-	}
-	
-	MIDIInterfaceInfo->State.InterfaceNumber = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t)->InterfaceNumber;
-
 	while (!(DataINEndpoint) || !(DataOUTEndpoint))
 	{
-		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+		if (!(MIDIInterface) ||
+		    USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
 		                              DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
 		{
-			DataINEndpoint  = NULL;
-			DataOUTEndpoint = NULL;
-
 			if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
-										  DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+			                              DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
 			{
 				return MIDI_ENUMERROR_NoCompatibleInterfaceFound;
 			}
 
-			MIDIInterfaceInfo->State.InterfaceNumber = DESCRIPTOR_PCAST(ConfigDescriptorData,
-			                                                            USB_Descriptor_Interface_t)->InterfaceNumber;
+			MIDIInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
+
+			DataINEndpoint  = NULL;
+			DataOUTEndpoint = NULL;
 
 			continue;
 		}
@@ -79,7 +72,7 @@ uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceI
 		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
 
 		if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
-		  DataINEndpoint = EndpointData;
+		  DataINEndpoint  = EndpointData;
 		else
 		  DataOUTEndpoint = EndpointData;
 	}
@@ -89,21 +82,22 @@ uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceI
 		if (PipeNum == MIDIInterfaceInfo->Config.DataINPipeNumber)
 		{
 			Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
-							   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
-							   MIDIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
+			                   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
+			                   MIDIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
 			
 			MIDIInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;			
 		}
 		else if (PipeNum == MIDIInterfaceInfo->Config.DataOUTPipeNumber)
 		{
 			Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
-							   DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
-							   MIDIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
+			                   DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
+			                   MIDIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
 			
 			MIDIInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;			
 		}
 	}
 
+	MIDIInterfaceInfo->State.InterfaceNumber = MIDIInterface->InterfaceNumber;
 	MIDIInterfaceInfo->State.IsActive = true;
 
 	return MIDI_ENUMERROR_NoError;