ledtrig-ide-disk: use generic one-shot blink api

Convert ledtrig-ide-disk code to use the generic API for one-shot LED
blinking.

This patch changes slightly the behaviour of the trigger, as while the
original version kept the LED on under heavy activity, the new one keeps
a constant on-off blink at 1 / (2 * BLINK_DELAY) Hz.

(bryan.wu@canonical.com: remove 2 useless included header files)

Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>

1 files changed, 4 insertions, 21 deletions

diff --git a/drivers/leds/ledtrig-ide-disk.c b/drivers/leds/ledtrig-ide-disk.c
index ec099fcbcb00..2cd7c0cf5924 100644
--- a/drivers/leds/ledtrig-ide-disk.c
+++ b/drivers/leds/ledtrig-ide-disk.c
@@ -12,39 +12,22 @@
  */
 
 #include <linux/module.h>
-#include <linux/jiffies.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/timer.h>
 #include <linux/leds.h>
 
-static void ledtrig_ide_timerfunc(unsigned long data);
+#define BLINK_DELAY 30
 
 DEFINE_LED_TRIGGER(ledtrig_ide);
-static DEFINE_TIMER(ledtrig_ide_timer, ledtrig_ide_timerfunc, 0, 0);
-static int ide_activity;
-static int ide_lastactivity;
+static unsigned long ide_blink_delay = BLINK_DELAY;
 
 void ledtrig_ide_activity(void)
 {
-        ide_activity++;
-        if (!timer_pending(&ledtrig_ide_timer))
-                mod_timer(&ledtrig_ide_timer, jiffies + msecs_to_jiffies(10));
+        led_trigger_blink_oneshot(ledtrig_ide,
+                                  &ide_blink_delay, &ide_blink_delay, 0);
 }
 EXPORT_SYMBOL(ledtrig_ide_activity);
 
-static void ledtrig_ide_timerfunc(unsigned long data)
-{
-        if (ide_lastactivity != ide_activity) {
-                ide_lastactivity = ide_activity;
-                /* INT_MAX will set each LED to its maximum brightness */
-                led_trigger_event(ledtrig_ide, INT_MAX);
-                mod_timer(&ledtrig_ide_timer, jiffies + msecs_to_jiffies(10));
-        } else {
-                led_trigger_event(ledtrig_ide, LED_OFF);
-        }
-}
-
 static int __init ledtrig_ide_init(void)
 {
         led_trigger_register_simple("ide-disk", &ledtrig_ide);