diff options
| author | David Brownell <david-b@pacbell.net> | 2005-05-09 08:07:00 -0700 |
|---|---|---|
| committer | Greg KH <gregkh@suse.de> | 2005-05-17 14:54:54 -0700 |
| commit | 82428b62aa6294ea640c7e920a9224ecaf46db65 (patch) | |
| tree | f9e9bfd1f86f739ee16968378057060417f52bb4 /drivers/base/power/resume.c | |
| parent | ff0d2f90fdc4b564d47a7c26b16de81a16cfa28e (diff) | |
[PATCH] Driver Core: pm diagnostics update, check for errors
This patch includes various tweaks in the messaging that appears during
system pm state transitions:
* Warn about certain illegal calls in the device tree, like resuming
child before parent or suspending parent before child. This could
happen easily enough through sysfs, or in some cases when drivers
use device_pm_set_parent().
* Be more consistent about dev_dbg() tracing ... do it for resume() and
shutdown() too, and never if the driver doesn't have that method.
* Say which type of system sleep state is being entered.
Except for the warnings, these only affect debug messaging.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/power/resume.c')
| -rw-r--r-- | drivers/base/power/resume.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c index f8f5055754d6..26468971ef5a 100644 --- a/drivers/base/power/resume.c +++ b/drivers/base/power/resume.c @@ -22,8 +22,17 @@ extern int sysdev_resume(void); int resume_device(struct device * dev) { - if (dev->bus && dev->bus->resume) + if (dev->power.pm_parent + && dev->power.pm_parent->power.power_state) { + dev_err(dev, "PM: resume from %d, parent %s still %d\n", + dev->power.power_state, + dev->power.pm_parent->bus_id, + dev->power.pm_parent->power.power_state); + } + if (dev->bus && dev->bus->resume) { + dev_dbg(dev,"resuming\n"); return dev->bus->resume(dev); + } return 0; } |