Tighten up the implementations of the USB_Device_SetDeviceAddress(), USB_Controller_Reset() and USB_PLL_On() functions for the AVR8 devices.

Minor corrections to the documentation of the USB_Control_Request_t enum.

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

@@ -199,8 +199,10 @@
 			static inline void USB_Device_SetDeviceAddress(const uint8_t Address) ATTR_ALWAYS_INLINE;
 			static inline void USB_Device_SetDeviceAddress(const uint8_t Address)
 			{
-				UDADDR  = ((UDADDR & (1 << ADDEN)) | (Address & 0x7F));
+				uint8_t Temp = (UDADDR & (1 << ADDEN)) | (Address & 0x7F);
-				UDADDR |= (1 << ADDEN);
+
+				UDADDR = Temp;
+				UDADDR = Temp | (1 << ADDEN);
 			}
 
 			static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;

LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.h

@@ -360,7 +360,7 @@
 			static inline void USB_PLL_On(void)
 			{
 				PLLCSR = USB_PLL_PSC;
-				PLLCSR |= (1 << PLLE);
+				PLLCSR = (USB_PLL_PSC | (1 << PLLE));
 			}
 
 			static inline void USB_PLL_Off(void) ATTR_ALWAYS_INLINE;
@@ -436,10 +436,8 @@
 			static inline void USB_Controller_Reset(void) ATTR_ALWAYS_INLINE;
 			static inline void USB_Controller_Reset(void)
 			{
-				const uint8_t Temp = USBCON;
+				USBCON &= ~(1 << USBE);
-
+				USBCON |=  (1 << USBE);
-				USBCON = (Temp & ~(1 << USBE));
-				USBCON = (Temp |  (1 << USBE));
 			}
 
 			#if defined(USB_CAN_BE_BOTH)

LUFA/Drivers/USB/Core/StdRequestType.h

@@ -178,17 +178,17 @@
 			 */
 			enum USB_Control_Request_t
 			{
-				REQ_GetStatus           = 0, /**< Implemented in the library for device, endpoint and interface
+				REQ_GetStatus           = 0, /**< Implemented in the library for device and endpoint recipients. Passed
-				                              *   recipients. Passed to the user application for other recipients
+				                              *   to the user application for other recipients via the
-				                              *   via the \ref EVENT_USB_Device_ControlRequest() event when received in
+				                              *   \ref EVENT_USB_Device_ControlRequest() event when received in
 				                              *   device mode. */
-				REQ_ClearFeature        = 1, /**< Implemented in the library for device, endpoint and interface
+				REQ_ClearFeature        = 1, /**< Implemented in the library for device and endpoint recipients. Passed
-				                              *   recipients. Passed to the user application for other recipients
+				                              *   to the user application for other recipients via the
-				                              *   via the \ref EVENT_USB_Device_ControlRequest() event when received in
+				                              *   \ref EVENT_USB_Device_ControlRequest() event when received in
 				                              *   device mode. */
-				REQ_SetFeature          = 3, /**< Implemented in the library for device, endpoint and interface
+				REQ_SetFeature          = 3, /**< Implemented in the library for device and endpoint recipients. Passed
-				                              *   recipients. Passed to the user application for other recipients
+				                              *   to the user application for other recipients via the
-				                              *   via the \ref EVENT_USB_Device_ControlRequest() event when received in
+				                              *   \ref EVENT_USB_Device_ControlRequest() event when received in
 				                              *   device mode. */
 				REQ_SetAddress          = 5, /**< Implemented in the library for the device recipient. Passed
 				                              *   to the user application for other recipients via the