Add missing function attributes to the pipe/endpoint functions for all architectures.

Perform endianness correction in the HID report parser for big-endian platforms.

LUFA/Common/Common.h

@@ -233,6 +233,15 @@
 			 */
 			#define GCC_MEMORY_BARRIER()                __asm__ __volatile__("" ::: "memory");
 			
+			/** Evaluates to boolean true if the specified value can be determined at compile time to be a constant value
+			 *  when compiling under GCC.
+			 *
+			 *  \param[in] x  Value to check compile time constantness of.
+			 *
+			 *  \return Boolean true if the given value is known to be a compile time constant.
+			 */
+			#define GCC_IS_COMPILE_CONST(x)             __builtin_constant_p(x)
+
 			#if !defined(ISR) || defined(__DOXYGEN__)
 				/** Macro for the definition of interrupt service routines, so that the compiler can insert the required
 				 *  prologue and epilogue code to properly manage the interrupt routine without affecting the main thread's
@@ -273,10 +282,11 @@
 			 *
 			 *  \param[in] Milliseconds  Number of milliseconds to delay
 			 */
+			static inline void Delay_MS(uint8_t Milliseconds) ATTR_ALWAYS_INLINE;
 			static inline void Delay_MS(uint8_t Milliseconds)
 			{
 				#if (ARCH == ARCH_AVR8)
-				if (__builtin_constant_p(Milliseconds))
+				if (GCC_IS_COMPILE_CONST(Milliseconds))
 				{
 					_delay_ms(Milliseconds);
 				}

LUFA/Common/Endianness.h

@@ -441,23 +441,23 @@
 			 *  \ingroup Group_ByteSwapping
 			 *
 			 *  \param[in,out] Data    Pointer to a number containing an even number of bytes to be reversed.
-			 *  \param[in]     Bytes  Length of the data in bytes.
+			 *  \param[in]     Length  Length of the data in bytes.
 			 */
-			static inline void SwapEndian_n(void* Data,
+			static inline void SwapEndian_n(void* const Data,
-			                                uint8_t Bytes) ATTR_NON_NULL_PTR_ARG(1);
+			                                uint8_t Length) ATTR_NON_NULL_PTR_ARG(1);
-			static inline void SwapEndian_n(void* Data,
+			static inline void SwapEndian_n(void* const Data,
-			                                uint8_t Bytes)
+			                                uint8_t Length)
 			{
 				uint8_t* CurrDataPos = (uint8_t*)Data;
 
-				while (Bytes > 1)
+				while (Length > 1)
 				{
 					uint8_t Temp = *CurrDataPos;
-					*CurrDataPos = *(CurrDataPos + Bytes - 1);
+					*CurrDataPos = *(CurrDataPos + Length - 1);
-					*(CurrDataPos + Bytes - 1) = Temp;
+					*(CurrDataPos + Length - 1) = Temp;
 
 					CurrDataPos++;
-					Bytes -= 2;
+					Length -= 2;
 				}
 			}
 

LUFA/Drivers/USB/Class/Common/HIDParser.c

@@ -61,12 +61,12 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData,
 		switch (HIDReportItem & HID_RI_DATA_SIZE_MASK)
 		{
 			case HID_RI_DATA_BITS_32:
-				ReportItemData  = *((uint32_t*)ReportData);
+				ReportItemData  = le32_to_cpu(*((uint32_t*)ReportData));
 				ReportSize     -= 4;
 				ReportData     += 4;
 				break;
 			case HID_RI_DATA_BITS_16:
-				ReportItemData  = *((uint16_t*)ReportData);
+				ReportItemData  = le16_to_cpu(*((uint16_t*)ReportData));
 				ReportSize     -= 2;
 				ReportData     += 2;
 				break;

LUFA/Drivers/USB/Class/Device/Audio.c

@@ -88,10 +88,8 @@ bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_Device_t* const AudioIn
 		}
 
 		if (!(Endpoint_ConfigureEndpoint(EndpointNum, Type, Direction, Size, ENDPOINT_BANK_DOUBLE)))
-		{
 		  return false;
 	}
-	}
 
 	return true;
 }

LUFA/Drivers/USB/Core/AVR8/Device_AVR8.h

@@ -137,6 +137,7 @@
 			/** Returns the current USB frame number, when in device mode. Every millisecond the USB bus is active (i.e. enumerated to a host)
 			 *  the frame number is incremented by one.
 			 */
+			static inline uint16_t USB_Device_GetFrameNumber(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline uint16_t USB_Device_GetFrameNumber(void)
 			{
 				return UDFNUM;
@@ -191,7 +192,7 @@
 				UDADDR |= (1 << ADDEN);
 			}
 
-			static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE;
+			static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline bool USB_Device_IsAddressSet(void)
 			{
 				return (UDADDR & (1 << ADDEN));

LUFA/Drivers/USB/Core/AVR8/Endpoint_AVR8.h

@@ -394,6 +394,7 @@
 			 *
 			 *  \return Total number of busy banks in the selected endpoint.
 			 */
+			static inline uint8_t Endpoint_GetBusyBanks(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline uint8_t Endpoint_GetBusyBanks(void)
 			{
 				return (UESTA0X & (0x03 << NBUSYBK0));

LUFA/Drivers/USB/Core/AVR8/Host_AVR8.h

@@ -140,6 +140,7 @@
 			/** Returns the current USB frame number, when in host mode. Every millisecond the USB bus is active (i.e. not suspended)
 			 *  the frame number is incremented by one.
 			 */
+			static inline uint16_t USB_Host_GetFrameNumber(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint16_t USB_Host_GetFrameNumber(void)
 			{
 				return UHFNUM;

LUFA/Drivers/USB/Core/AVR8/OTG_AVR8.h

@@ -93,7 +93,7 @@
 			 *
 			 *  \return Boolean \c true if currently sending a HNP to the other connected device, \c false otherwise
 			 */
-			static inline bool USB_OTG_Device_IsSendingHNP(void) ATTR_ALWAYS_INLINE;
+			static inline bool USB_OTG_Device_IsSendingHNP(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline bool USB_OTG_Device_IsSendingHNP(void)
 			{
 				return ((OTGCON & (1 << HNPREQ)) ? true : false);

LUFA/Drivers/USB/Core/AVR8/Pipe_AVR8.h

@@ -273,7 +273,7 @@
 			 *
 			 *  \return The current pipe token, as a \c PIPE_TOKEN_* mask.
 			 */
-			static inline uint8_t Pipe_GetPipeToken(void) ATTR_ALWAYS_INLINE;
+			static inline uint8_t Pipe_GetPipeToken(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint8_t Pipe_GetPipeToken(void)
 			{
 				return (UPCFG0X & (0x03 << PTOKEN0));
@@ -433,6 +433,7 @@
 			 *
 			 *  \return Total number of busy banks in the selected pipe.
 			 */
+			static inline uint8_t Pipe_GetBusyBanks(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint8_t Pipe_GetBusyBanks(void)
 			{
 				return (UPSTAX & (0x03 << NBUSYBK0));

LUFA/Drivers/USB/Core/UC3/Device_UC3.h

@@ -127,6 +127,7 @@
 			/** Returns the current USB frame number, when in device mode. Every millisecond the USB bus is active (i.e. enumerated to a host)
 			 *  the frame number is incremented by one.
 			 */
+			static inline uint16_t USB_Device_GetFrameNumber(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline uint16_t USB_Device_GetFrameNumber(void)
 			{
 				return AVR32_USBB.UDFNUM.fnum;
@@ -179,7 +180,7 @@
 				AVR32_USBB.UDCON.adden = true;
 			}
 
-			static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE;
+			static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline bool USB_Device_IsAddressSet(void)
 			{
 				return AVR32_USBB.UDCON.adden;

LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.h

@@ -402,6 +402,7 @@
 			 *
 			 *  \return Total number of busy banks in the selected endpoint.
 			 */
+			static inline uint8_t Endpoint_GetBusyBanks(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline uint8_t Endpoint_GetBusyBanks(void)
 			{
 				return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].nbusybk;

LUFA/Drivers/USB/Core/UC3/Host_UC3.h

@@ -141,6 +141,7 @@
 			/** Returns the current USB frame number, when in host mode. Every millisecond the USB bus is active (i.e. not suspended)
 			 *  the frame number is incremented by one.
 			 */
+			static inline uint16_t USB_Host_GetFrameNumber(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint16_t USB_Host_GetFrameNumber(void)
 			{
 				return AVR32_USBB_UHFNUM;

LUFA/Drivers/USB/Core/UC3/Pipe_UC3.h

@@ -284,7 +284,7 @@
 			 *
 			 *  \return The current pipe token, as a \c PIPE_TOKEN_* mask.
 			 */
-			static inline uint8_t Pipe_GetPipeToken(void) ATTR_ALWAYS_INLINE;
+			static inline uint8_t Pipe_GetPipeToken(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint8_t Pipe_GetPipeToken(void)
 			{
 				return (&AVR32_USBB.UPCFG0)[USB_SelectedPipe].ptoken;
@@ -451,6 +451,7 @@
 			 *
 			 *  \return Total number of busy banks in the selected pipe.
 			 */
+			static inline uint8_t Pipe_GetBusyBanks(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint8_t Pipe_GetBusyBanks(void)
 			{
 				return (&AVR32_USBB.UPSTA0)[USB_SelectedPipe].nbusybk;