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Commit d02f40e8 authored by Linus Torvalds's avatar Linus Torvalds
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Enable minimal per-device resume tracing 



This is the minimal resume trace code to find which device resume (if
any) results in problems.  Usually, you'd use the information this
generates as a starting point to adding more fine-grained trace event
points.

Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent eb71c87a

drivers/base/power/resume.c

+4 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
 */



#include <linux/device.h>

#include <linux/resume-trace.h>

#include "../base.h"

#include "power.h"
@@ -23,6 +24,8 @@ int resume_device(struct device * dev) 
{

	int error = 0;



	TRACE_DEVICE(dev);

	TRACE_RESUME(0);

	down(&dev->sem);

	if (dev->power.pm_parent

			&& dev->power.pm_parent->power.power_state.event) {
@@ -36,6 +39,7 @@ int resume_device(struct device * dev) 
		error = dev->bus->resume(dev);

	}

	up(&dev->sem);

	TRACE_RESUME(error);

	return error;

}