opp: Use of_property_present() for testing DT property presence

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index e55c609..bed2b65 100644 (file)
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -224,7 +224,7 @@ void _of_init_opp_table(struct opp_table *opp_table, struct device *dev,
        of_property_read_u32(np, "voltage-tolerance",
                             &opp_table->voltage_tolerance_v1);
 
-       if (of_find_property(np, "#power-domain-cells", NULL))
+       if (of_property_present(np, "#power-domain-cells"))
                opp_table->is_genpd = true;
 
        /* Get OPP table node */
@@ -536,7 +536,7 @@ static bool _opp_is_supported(struct device *dev, struct opp_table *opp_table,
                 * an OPP then the OPP should not be enabled as there is
                 * no way to see if the hardware supports it.
                 */
-               if (of_find_property(np, "opp-supported-hw", NULL))
+               if (of_property_present(np, "opp-supported-hw"))
                        return false;
                else
                        return true;