From: Jean Pihet <j-pihet@ti.com>
Date: Thu, 25 Aug 2011 13:35:34 +0000 (+0200)
Subject: PM QoS: Generalize and export constraints management code
X-Git-Tag: v3.2-rc1~178^2~22^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abe98ec2d86279fe821c9051003a0abc43444f15;p=pandora-kernel.git

PM QoS: Generalize and export constraints management code

In preparation for the per-device constratins support:
 - rename update_target to pm_qos_update_target
 - generalize and export pm_qos_update_target for usage by the upcoming
   per-device latency constraints framework:
   * operate on struct pm_qos_constraints for constraints management,
   * introduce an 'action' parameter for constraints add/update/remove,
   * the return value indicates if the aggregated constraint value has
     changed,
 - update the internal code to operate on struct pm_qos_constraints
 - add a NULL pointer check in the API functions

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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