drivers/misc/blink.c

   1 #include <linux/kernel.h>
   2 #include <linux/module.h>
   3 #include <linux/timer.h>
   4 #include <linux/jiffies.h>
   5
   6 static void do_blink(unsigned long data);
   7
   8 static DEFINE_TIMER(blink_timer, do_blink, 0 ,0);
   9
  10 static void do_blink(unsigned long data)
  11 {
  12         static long count;
  13         if (panic_blink)
  14                 panic_blink(count++);
  15         blink_timer.expires = jiffies + msecs_to_jiffies(1);
  16         add_timer(&blink_timer);
  17 }
  18
  19 static int blink_init(void)
  20 {
  21         printk(KERN_INFO "Enabling keyboard blinking\n");
  22         do_blink(0);
  23         return 0;
  24 }
  25
  26 module_init(blink_init);
  27