PM: Prevent runtime suspend during system resume
commit 88d26136a256576e444db312179e17af6dd0ea87 upstream.
This patch (as1591) moves the pm_runtime_get_noresume() and
pm_runtime_put_sync() calls from __device_suspend() and
device_resume() to device_prepare() and device_complete() in the PM
core.
The reason for doing this is to make sure that parent devices remain
at full power (i.e., don't go into runtime suspend) while their
children are being resumed from a system sleep.
The PCI core already contained equivalent code to serve the same
purpose. The patch removes the duplicated code, since it is no longer
needed. One of the comments from the PCI core gets moved into the PM
core, and a second comment is added to explain whe the _get_noresume
and _put_sync calls are present.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
CRs-fixed: 396041
Change-Id: I886ff17719d3253875f23689f3729cc7e71a2ebf
Signed-off-by: Jack Pham <jackp@codeaurora.org>
2 files changed