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| author | Johan Hovold <johan+linaro@kernel.org> | 2022-09-29 18:42:14 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-10-04 17:26:11 +0300 |
| commit | 129b60c957711a20434f4d4404652f0720e1ba1d (patch) | |
| tree | c3b8b6d9b2a58b0994d5201095f84e9a30c1dc22 /drivers/base | |
| parent | c79e6fa98ca8628556a01fe277022bda64829fdf (diff) | |
| download | linux-129b60c957711a20434f4d4404652f0720e1ba1d.tar.xz | |
PM: domains: log failures to register always-on domains
Always-on PM domains must be on during initialisation or the domain is
currently silently rejected.
Print an error message in case an always-on domain is not on to make it
easier to debug drivers getting this wrong (e.g. by setting an always-on
genpd flag without making sure that the state matches).
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/domain.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 55a10e6d4e2a..ead135c7044c 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2085,8 +2085,10 @@ int pm_genpd_init(struct generic_pm_domain *genpd, /* Always-on domains must be powered on at initialization. */ if ((genpd_is_always_on(genpd) || genpd_is_rpm_always_on(genpd)) && - !genpd_status_on(genpd)) + !genpd_status_on(genpd)) { + pr_err("always-on PM domain %s is not on\n", genpd->name); return -EINVAL; + } /* Multiple states but no governor doesn't make sense. */ if (!gov && genpd->state_count > 1) |