remain the old handler to keep forward compatibility

1 files changed, 3 insertions, 2 deletions

diff --git a/include/rthw.h b/include/rthw.h
index 808639c951..817b9f40f2 100644
--- a/include/rthw.h
+++ b/include/rthw.h
@@ -41,9 +41,10 @@ rt_uint8_t *rt_hw_stack_init(void       *entry,
 void rt_hw_interrupt_init(void);
 void rt_hw_interrupt_mask(int vector);
 void rt_hw_interrupt_umask(int vector);
-void rt_hw_interrupt_install(int               vector,
+rt_isr_handler_t rt_hw_interrupt_install(int vector,
                              rt_isr_handler_t  handler,
-                             void *param, char *name);
+                             void *param,
+                             char *name);
 void rt_hw_interrupt_handle(int vector);
 
 rt_base_t rt_hw_interrupt_disable(void);