diff options
Diffstat (limited to 'drivers/base/power/suspend.c')
| -rw-r--r-- | drivers/base/power/suspend.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c index a0b5cf689e63..0ec44ef840be 100644 --- a/drivers/base/power/suspend.c +++ b/drivers/base/power/suspend.c @@ -39,12 +39,25 @@ int suspend_device(struct device * dev, pm_message_t state) { int error = 0; - dev_dbg(dev, "suspending\n"); + if (dev->power.power_state) { + dev_dbg(dev, "PM: suspend %d-->%d\n", + dev->power.power_state, state); + } + if (dev->power.pm_parent + && dev->power.pm_parent->power.power_state) { + dev_err(dev, + "PM: suspend %d->%d, parent %s already %d\n", + dev->power.power_state, state, + dev->power.pm_parent->bus_id, + dev->power.pm_parent->power.power_state); + } dev->power.prev_state = dev->power.power_state; - if (dev->bus && dev->bus->suspend && !dev->power.power_state) + if (dev->bus && dev->bus->suspend && !dev->power.power_state) { + dev_dbg(dev, "suspending\n"); error = dev->bus->suspend(dev, state); + } return error; } |