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: Linus Torvalds <torvalds@osdl.org>
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@ -9,6 +9,7 @@
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*/
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#include <linux/device.h>
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#include <linux/resume-trace.h>
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#include "../base.h"
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#include "power.h"
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@ -23,6 +24,8 @@ int resume_device(struct device * dev)
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{
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int error = 0;
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TRACE_DEVICE(dev);
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TRACE_RESUME(0);
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down(&dev->sem);
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if (dev->power.pm_parent
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&& dev->power.pm_parent->power.power_state.event) {
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@ -36,6 +39,7 @@ int resume_device(struct device * dev)
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error = dev->bus->resume(dev);
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}
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up(&dev->sem);
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TRACE_RESUME(error);
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return error;
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}
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