From: Nishanth Aravamudan Subject: [KJ] [UPDATE PATCH] cdrom/sonycd535: replace schedule_timeout() with msleep() Use msleep() instead of schedule_timeout() to guarantee the task delays as expected. Although TASK_INTERRUPTIBLE is used in the original code, the schedule_timeout() return conditions for such a state are not checked appropriately; therefore, TASK_UNINTERRUPTIBLE should be ok (and, hence, msleep()). Signed-off-by: Nishanth Aravamudan Signed-off-by: Domen Puncer --- sonycd535.c | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) Index: quilt/drivers/cdrom/sonycd535.c =================================================================== --- quilt.orig/drivers/cdrom/sonycd535.c +++ quilt/drivers/cdrom/sonycd535.c @@ -129,6 +129,7 @@ #include #include #include +#include #define REALLY_SLOW_IO #include @@ -896,9 +897,8 @@ do_cdu535_request(request_queue_t * q) } if (readStatus == BAD_STATUS) { /* Sleep for a while, then retry */ - set_current_state(TASK_INTERRUPTIBLE); spin_unlock_irq(&sonycd535_lock); - schedule_timeout(RETRY_FOR_BAD_STATUS*HZ/10); + msleep(RETRY_FOR_BAD_STATUS*100); spin_lock_irq(&sonycd535_lock); } #if DEBUG > 0 @@ -1478,8 +1478,7 @@ static int __init sony535_init(void) /* look for the CD-ROM, follows the procedure in the DOS driver */ inb(select_unit_reg); /* wait for 40 18 Hz ticks (reverse-engineered from DOS driver) */ - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout((HZ+17)*40/18); + msleep(2222); inb(result_reg); outb(0, read_status_reg); /* does a reset? */