[PATCH v4 5/8] pmdomain: Make genpd_get_from_provider() return -EPROBE_DEFER

[Geert Uytterhoeven]

Unlike provider-based look-up functions in other subsystems[1],
genpd_get_from_provider() returns -ENOENT instead of -EPROBE_DEFER when
the provider is not found, thus not supporting probe deferral.
Currently this is worked around in of_genpd_add_subdomain() by remapping
-ENOENT[2].

Fix this for all current and future callers by returning -EPROBE_DEFER
instead, and drop the no longer needed remapping code.

[1] of_clk_get_hw_from_clkspec(), __fwnode_reset_control_get()),
[2] Commit 18027d6f392ee8d8 ("PM: domains: Make of_genpd_add_subdomain()
    return -EPROBE_DEFER").

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
v4:
  - New.
---
 drivers/pmdomain/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 964e44c2f78f1d55..88c886814a5b9da3 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -3021,7 +3021,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider);
 static struct generic_pm_domain *genpd_get_from_provider(
 					const struct of_phandle_args *genpdspec)
 {
-	struct generic_pm_domain *genpd = ERR_PTR(-ENOENT);
+	struct generic_pm_domain *genpd = ERR_PTR(-EPROBE_DEFER);
 	struct of_genpd_provider *provider;
 
 	if (!genpdspec)
@@ -3276,7 +3276,7 @@ int of_genpd_add_subdomain(const struct of_phandle_args *parent_spec,
 out:
 	mutex_unlock(&gpd_list_lock);
 
-	return ret == -ENOENT ? -EPROBE_DEFER : ret;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(of_genpd_add_subdomain);
 
-- 
2.43.0