PM / Domains: Take .power_off() error code into account
Currently pm_genpd_poweroff() discards error codes returned by the PM domain's .power_off() callback, because it's safer to always regard the domain as inaccessible to drivers after a failing .power_off(). Still, there are situations in which the low-level code may want to indicate that it doesn't want to power off the domain, so allow it to do that by returning -EBUSY from .power_off(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Magnus Damm <damm@opensource.se>
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0bc5b2debb
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d28054020f
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@ -312,8 +312,16 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
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}
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}
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if (genpd->power_off)
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genpd->power_off(genpd);
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if (genpd->power_off) {
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ret = genpd->power_off(genpd);
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if (ret == -EBUSY) {
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genpd_set_active(genpd);
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if (parent)
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genpd_release_lock(parent);
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goto out;
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}
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}
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genpd->status = GPD_STATE_POWER_OFF;
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