From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Mon, 8 Aug 2011 21:43:14 +0000 (+0200)
Subject: PM / Domains: Do not take parent locks to modify subdomain counters
X-Git-Tag: v3.2-rc1~178^2~23^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c07cbc488bfd1ad1abf64d09cc692339b5f8a83;p=pandora-kernel.git

PM / Domains: Do not take parent locks to modify subdomain counters

After the subdomain counter in struct generic_pm_domain has been
changed into an atomic_t field, it is possible to modify
pm_genpd_poweron() and pm_genpd_poweroff() so that they don't take
the parents locks.  This requires pm_genpd_poweron() to increment
the parent's subdomain counter before calling itself recursively
for the parent and to decrement it if an error is to be returned.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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