tree 5dd778d65af07b3f4ae74d931e3bd4ac7a03ad5d
parent f104e1e5ef5788f02de2053bfbd0f02d629b6036
author Ulf Hansson <ulf.hansson@linaro.org> 1422389625 +0100
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1423000614 +0100

PM / Domains: Handle errors from genpd's ->attach_dev() callback

The optional genpd's ->attach_dev() callback is invoked from
__pm_genpd_add_device(). Let's add error handling from the response
from this callback and propagate the error code.

When __pm_genpd_add_device() is invoked through the generic OF-based PM
domain look-up path, the device is being probed. Returning an error
will mean the device won't be attached to its PM domain. Errors of
-EPROBE_DEFER get special treatment and is propagated to the driver
core.

Therefore this change also enables the ->attach_dev() callback to
be able to request for a deferred probe sequence.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>