blob: 9208b5fd51864713ad8394a3035e6e2a3c287dcf [file] [log] [blame] [edit]
/* 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);