Add some missing function attributes.

[pub/USBasp.git] / 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 9a7cb08..792f865 100644 (file)
--- a/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h
+++ b/LUFA/Drivers/USB/Class/Host/PrinterClassHost.h
@@ -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