diff options
Diffstat (limited to 'drivers/char/nwbutton.c')
| -rw-r--r-- | drivers/char/nwbutton.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/char/nwbutton.c b/drivers/char/nwbutton.c index 04a480f86c6..76c490fa051 100644 --- a/drivers/char/nwbutton.c +++ b/drivers/char/nwbutton.c @@ -93,9 +93,9 @@ int button_del_callback (void (*callback) (void)) button_callback_list [lp].count = 0; callback_count--; return 0; - }; + } lp--; - }; + } return -EINVAL; } @@ -168,7 +168,10 @@ static irqreturn_t button_handler (int irq, void *dev_id) static int button_read (struct file *filp, char __user *buffer, size_t count, loff_t *ppos) { - interruptible_sleep_on (&button_wait_queue); + DEFINE_WAIT(wait); + prepare_to_wait(&button_wait_queue, &wait, TASK_INTERRUPTIBLE); + schedule(); + finish_wait(&button_wait_queue, &wait); return (copy_to_user (buffer, &button_output_buffer, bcount)) ? -EFAULT : bcount; } @@ -220,7 +223,7 @@ static int __init nwbutton_init(void) return -EBUSY; } - if (request_irq (IRQ_NETWINDER_BUTTON, button_handler, IRQF_DISABLED, + if (request_irq (IRQ_NETWINDER_BUTTON, button_handler, 0, "nwbutton", NULL)) { printk (KERN_WARNING "nwbutton: IRQ %d is not free.\n", IRQ_NETWINDER_BUTTON); |