mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-25 21:24:08 +08:00
PM / Domains: Deal with multiple states but no governor in genpd
A caller of pm_genpd_init() that provides some states for the genpd via the ->states pointer in the struct generic_pm_domain, should also provide a governor. This because it's the job of the governor to pick a state that satisfies the constraints. Therefore, let's print a warning to inform the user about such bogus configuration and avoid to bail out, by instead picking the shallowest state before genpd invokes the ->power_off() callback. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
parent
2c36168480
commit
2c9b7f8772
@ -467,6 +467,10 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool one_dev_on,
|
||||
return -EAGAIN;
|
||||
}
|
||||
|
||||
/* Default to shallowest state. */
|
||||
if (!genpd->gov)
|
||||
genpd->state_idx = 0;
|
||||
|
||||
if (genpd->power_off) {
|
||||
int ret;
|
||||
|
||||
@ -1687,6 +1691,8 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
|
||||
ret = genpd_set_default_power_state(genpd);
|
||||
if (ret)
|
||||
return ret;
|
||||
} else if (!gov) {
|
||||
pr_warn("%s : no governor for states\n", genpd->name);
|
||||
}
|
||||
|
||||
device_initialize(&genpd->dev);
|
||||
|
Loading…
Reference in New Issue
Block a user