/* Basic functions for adding/removing custom exception handlers * * Copyright 2004-2009 Analog Devices Inc. * * Licensed under the GPL-2 or later */ #include <linux/module.h>#include <asm/irq_handler.h> int bfin_request_exception(unsigned int exception, void (*handler)(void)){	void (*curr_handler)(void); 	if (exception > 0x3F)		return -EINVAL; 	curr_handler = ex_table[exception]; 	if (curr_handler != ex_replaceable)		return -EBUSY; 	ex_table[exception] = handler; 	return 0;}EXPORT_SYMBOL(bfin_request_exception); int bfin_free_exception(unsigned int exception, void (*handler)(void)){	void (*curr_handler)(void); 	if (exception > 0x3F)		return -EINVAL; 	curr_handler = ex_table[exception]; 	if (curr_handler != handler)		return -EBUSY; 	ex_table[exception] = ex_replaceable; 	return 0;}EXPORT_SYMBOL(bfin_free_exception);