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leds: convert IDE trigger to common disk trigger

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This patch converts the IDE specific LED trigger to a generic disk
activity LED trigger. The libata core is now a trigger source just
like before the IDE disk driver. It's merely a replacement of the
string ide by disk.

The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and is
widely used by any ibook/powerbook owners with great satisfaction.
Likewise, it is very often used successfully on different ARM platforms.

Unlike the original patch, the existing 'ide-disk' trigger is still
available for backward compatibility. That reduce the amount of patches
in affected device trees out of the mainline kernel. For further
development, the new name 'disk-activity' should be used.

Cc: Joseph Jezak <josejx@gentoo.org>
Cc: Jörg Sommer <joerg@alea.gnuu.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
This commit is contained in:
Stephan Linz 2016-06-10 07:59:56 +02:00 • committed by Jacek Anaszewski
parent fa4191a609
commit eb25cb9956
7 changed files with 26 additions and 17 deletions
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6
include/linux/leds.h
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@ -325,10 +325,10 @@ static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
#endif /* CONFIG_LEDS_TRIGGERS */
/* Trigger specific functions */
#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK
extern void ledtrig_ide_activity(void);
#ifdef CONFIG_LEDS_TRIGGER_DISK
extern void ledtrig_disk_activity(void);
#else
static inline void ledtrig_ide_activity(void) {}
static inline void ledtrig_disk_activity(void) {}
#endif
#ifdef CONFIG_LEDS_TRIGGER_MTD