Hi, It's the second REDIFF, and i've more two. Hope that helps, Gustavo Franco --- drivers/cdrom/cdu31a.c.orig 2004-04-28 20:43:51.000000000 -0300 +++ drivers/cdrom/cdu31a.c 2004-04-28 20:44:55.000000000 -0300 @@ -386,7 +386,8 @@ unsigned long flags; if (cdu31a_irq <= 0) { - yield(); + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(1); } else { /* Interrupt driven */ save_flags(flags);