diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index 12ed5e3..37d2d2a 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -1010,12 +1010,11 @@
 }
 
 
-void scsi_bus_reset(void)
+__weak void scsi_bus_reset(void)
 {
 	/*Not implement*/
 }
 
-
 void scsi_print_error(ccb * pccb)
 {
 	/*The ahci error info can be read in the ahci driver*/