fix crash on rmmod dur to free_irq()

diff --git a/comedi/rtai.c b/comedi/rtai.c
index e3dbe2d6e6ebe4820ca414f2026d91586d919738..69625053b377bb84978658aebf7e8ebb4e6e78da 100644 (file)
--- a/comedi/rtai.c
+++ b/comedi/rtai.c
@@ -92,26 +92,40 @@ void rt_pend_irq_handler(void)
        }
 }
 
+#define random_pointer ((void *)&rt_pend_tq_init)
+
 int rt_pend_tq_init(void)
 {
        rt_pend_head=rt_pend_tail=rt_pend_tq;
-       return rt_pend_tq_irq=rt_request_srq(0,rt_pend_irq_handler,NULL);
+       rt_pend_tq_irq=rt_request_srq(0,rt_pend_irq_handler,random_pointer);
+       if(rt_pend_tq_irq<0){
+               rt_pend_tq_irq=0;
+               printk("rt_pend_tq_init(): couldn't alloc srq\n");
+               return -EINVAL;
+       }else{
+               printk("rt_pend_tq_init(): irq=%d\n",rt_pend_tq_irq);
+       }
+       return 0;
 }
 
 void rt_pend_tq_cleanup(void)
 {
-       free_irq(rt_pend_tq_irq,NULL);
+       if(rt_pend_tq_irq){
+               free_irq(rt_pend_tq_irq,random_pointer);
+       }
 }
 #endif
 
 
 void comedi_rtai_init(void)
 {
+       rt_mount_rtai();
        rt_pend_tq_init();
 }
 
 void comedi_rtai_cleanup(void)
 {
        rt_pend_tq_cleanup();
+       rt_umount_rtai();
 }