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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2020-03-10 11:40:23 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-03-14 12:03:05 +0100 |
| commit | 56cb26891ea4180121265dc6b596015772c4a4b8 (patch) | |
| tree | 81ce75e68ae460729df12f0d0eecfe055cd5641d /drivers/base/power/domain.c | |
| parent | Linux 5.6-rc5 (diff) | |
| download | linux-56cb26891ea4180121265dc6b596015772c4a4b8.tar.xz linux-56cb26891ea4180121265dc6b596015772c4a4b8.zip | |
PM / Domains: Allow no domain-idle-states DT property in genpd when parsing
Commit 2c361684803e ("PM / Domains: Don't treat zero found compatible idle
states as an error"), moved of_genpd_parse_idle_states() towards allowing
none compatible idle state to be found for the device node, rather than
returning an error code.
However, it didn't consider that the "domain-idle-states" DT property may
be missing as it's optional, which makes of_count_phandle_with_args() to
return -ENOENT. Let's fix this to make the behaviour consistent.
Fixes: 2c361684803e ("PM / Domains: Don't treat zero found compatible idle states as an error")
Reported-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Cc: 4.20+ <stable@vger.kernel.org> # 4.20+
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base/power/domain.c')
| -rw-r--r-- | drivers/base/power/domain.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 959d6d5eb000..0a01df608849 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2653,7 +2653,7 @@ static int genpd_iterate_idle_states(struct device_node *dn, ret = of_count_phandle_with_args(dn, "domain-idle-states", NULL); if (ret <= 0) - return ret; + return ret == -ENOENT ? 0 : ret; /* Loop over the phandles until all the requested entry is found */ of_for_each_phandle(&it, ret, dn, "domain-idle-states", NULL, 0) { |