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f038f9a361
Simple driver that blinks the keyboard LEDs when loaded. Useful for checking that the kernel is still alive or for crashdumping Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
27 lines
522 B
C
27 lines
522 B
C
#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/timer.h>
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#include <linux/jiffies.h>
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static void do_blink(unsigned long data);
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static DEFINE_TIMER(blink_timer, do_blink, 0 ,0);
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static void do_blink(unsigned long data)
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{
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static long count;
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if (panic_blink)
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panic_blink(count++);
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blink_timer.expires = jiffies + msecs_to_jiffies(1);
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add_timer(&blink_timer);
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}
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static int blink_init(void)
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{
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printk(KERN_INFO "Enabling keyboard blinking\n");
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do_blink(0);
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return 0;
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}
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module_init(blink_init);
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