[PATCH 2.6.22] Add LED trigger to libata core

[Tony Vroon]

This duplicates the IDE core LED trigger in the libata core.
I plan to use this by allowing PMU LED control on G5 towers. My test platform 
is a PowerMac 7,3 (Dual G5 2.0GHz, June 2004) with a K2 (sata_svw) controller.

Signed-off-by: Tony Vroon <chainsaw@xxxxxxxxxx>

--- linux-2.6/drivers/ata/libata-scsi.c.orig	2007-03-17 22:53:56.000000000 +0000
+++ linux-2.6/drivers/ata/libata-scsi.c	2007-03-17 22:53:15.000000000 +0000
@@ -46,6 +46,7 @@
 #include <linux/libata.h>
 #include <linux/hdreg.h>
 #include <asm/uaccess.h>
+#include <linux/leds.h>
 
 #include "libata.h"
 
@@ -2791,6 +2792,7 @@
 				      struct ata_device *dev)
 {
 	int rc = 0;
+	ledtrig_ide_activity();
 
 	if (unlikely(!scmd->cmd_len)) {
 		ata_dev_printk(dev, KERN_WARNING, "WARNING: zero len CDB\n");
-
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