X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/de0df8b16259458c78c742b5dbedd4ac90856285..16e8fe9878944f7bcd69cb6e6636ba8b9c574ab9:/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h

diff --git a/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h b/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h
index 23ec7fdcd..792f86564 100644
--- a/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h
+++ b/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h
@@ -200,7 +200,7 @@
 			 *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
 			 */
 			uint8_t PRNT_Host_SendData(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
-			                           void* Buffer,
+			                           const void* Buffer,
 			                           const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 
 			/** Sends a given byte to the attached USB device, if connected. If a device is not connected when the function is called, the
@@ -231,7 +231,7 @@
 			 *
 			 *  \return Total number of buffered bytes received from the device.
 			 */
-			uint16_t PRNT_Host_BytesReceived(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo);
+			uint16_t PRNT_Host_BytesReceived(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 
 			/** Reads a byte of data from the device. If no data is waiting to be read of if a USB device is not connected, the function
 			 *  returns a negative value. The \ref PRNT_Host_BytesReceived() function may be queried in advance to determine how many bytes
@@ -244,7 +244,7 @@
 			 *
 			 *  \return Next received byte from the device, or a negative value if no data received.
 			 */
-			int16_t PRNT_Host_ReceiveByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo);
+			int16_t PRNT_Host_ReceiveByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 
 			/** Retrieves the attached printer device's ID string, formatted according to IEEE 1284. This string is sent as a
 			 *  Unicode string from the device and is automatically converted to an ASCII encoded C string by this function, thus