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PM: sleep: Print driver flags for all devices during suspend/resume
Currently there are 4 driver flags to control system suspend/resume behavior: DPM_FLAG_NO_DIRECT_COMPLETE, DPM_FLAG_SMART_PREPARE, DPM_FLAG_SMART_SUSPEND and DPM_FLAG_MAY_SKIP_RESUME. Print these flags during suspend/resume so as to get a brief understanding of the expected behavior of each device, and to facilitate suspend/resume debugging/tuning. To enable this tracing: echo 'file drivers/base/power/main.c +p' > /sys/kernel/debug/dynamic_debug/control Signed-off-by: Chen Yu <yu.c.chen@intel.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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1 changed files with 2 additions and 2 deletions
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@ -441,9 +441,9 @@ static pm_callback_t pm_noirq_op(const struct dev_pm_ops *ops, pm_message_t stat
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static void pm_dev_dbg(struct device *dev, pm_message_t state, const char *info)
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{
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dev_dbg(dev, "%s%s%s\n", info, pm_verb(state.event),
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dev_dbg(dev, "%s%s%s driver flags: %x\n", info, pm_verb(state.event),
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((state.event & PM_EVENT_SLEEP) && device_may_wakeup(dev)) ?
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", may wakeup" : "");
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", may wakeup" : "", dev->power.driver_flags);
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}
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static void pm_dev_err(struct device *dev, pm_message_t state, const char *info,
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