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PM / Domains: Move syscore flag from subsys data to struct device

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The syscore device PM flag is used to mark the devices (belonging to
a PM domain) that should never be turned off, except for the system
core (syscore) suspend/hibernation and resume stages.  That flag is
stored in the device's struct pm_subsys_data object whose address is
available from struct device.  However, in some situations it may be
convenient to set that flag before the device is added to a PM
domain, so it is better to move it directly to the "power" member of
struct device.  Then, it can be checked by the routines in
drivers/base/power/runtime.c and drivers/base/power/main.c, which is
more straightforward.

This also reduces the number of dev_gpd_data() invocations in the
generic PM domains framework, so the overhead related to the syscore
flag is slightly smaller.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>
This commit is contained in:
Rafael J. Wysocki
2012-08-06 01:46:39 +02:00
parent 6fb28badf2
commit dbf374142d
9 changed files with 58 additions and 38 deletions
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2
drivers/clocksource/sh_tmu.c
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@@ -453,7 +453,7 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev)
struct sh_timer_config *cfg = pdev->dev.platform_data;
if (cfg->clocksource_rating || cfg->clockevent_rating)
pm_genpd_dev_syscore(&pdev->dev, true);
dev_pm_syscore_device(&pdev->dev, true);
}
if (p) {