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mips/loongson_1b: install NULL handler is OK

This commit is contained in:
Grissiom 2014-08-18 15:22:16 +08:00
parent 1d928f7daf
commit 0ee101ccb0
1 changed files with 4 additions and 7 deletions
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11
libcpu/mips/loongson_1b/interrupt.c
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@ -96,7 +96,7 @@ void rt_hw_interrupt_umask(int vector)
* @param old_handler the old interrupt service routine * @param old_handler the old interrupt service routine
*/ */
rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler, rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
void *param, char *name) void *param, char *name)
{ {
rt_isr_handler_t old_handler = RT_NULL; rt_isr_handler_t old_handler = RT_NULL;
@ -104,14 +104,11 @@ rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
{ {
old_handler = irq_handle_table[vector].handler; old_handler = irq_handle_table[vector].handler;
if (handler != RT_NULL)
{
#ifdef RT_USING_INTERRUPT_INFO #ifdef RT_USING_INTERRUPT_INFO
rt_strncpy(irq_handle_table[vector].name, name, RT_NAME_MAX); rt_strncpy(irq_handle_table[vector].name, name, RT_NAME_MAX);
#endif /* RT_USING_INTERRUPT_INFO */ #endif /* RT_USING_INTERRUPT_INFO */
irq_handle_table[vector].handler = handler; irq_handle_table[vector].handler = handler;
irq_handle_table[vector].param = param; irq_handle_table[vector].param = param;
}
} }
return old_handler; return old_handler;