linux-kernel - [PATCH] macintosh: Use of_property_present() for testing DT property presence

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Message-Id: <20230310144735.1546817-1-robh@kernel.org>
Date:   Fri, 10 Mar 2023 08:47:35 -0600
From:   Rob Herring <robh@...nel.org>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Colin Leroy <colin@...ino.net>
Cc:     devicetree@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] macintosh: 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@...nel.org>
---
 drivers/macintosh/rack-meter.c    | 2 +-
 drivers/macintosh/therm_adt746x.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c
index c28893e41a8b..40240bce77b0 100644
--- a/drivers/macintosh/rack-meter.c
+++ b/drivers/macintosh/rack-meter.c
@@ -387,7 +387,7 @@ static int rackmeter_probe(struct macio_dev* mdev,
 	       if (of_node_name_eq(np, "lightshow"))
 		       break;
 	       if (of_node_name_eq(np, "sound") &&
-		   of_get_property(np, "virtual", NULL) != NULL)
+		   of_property_present(np, "virtual"))
 		       break;
 	}
 	if (np == NULL) {
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index 8f5db9093c9a..384b87d661e1 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -483,7 +483,7 @@ static int probe_thermostat(struct i2c_client *client)
 	if (vers != 1)
 		return -ENXIO;
 
-	if (of_get_property(np, "hwsensor-location", NULL)) {
+	if (of_property_present(np, "hwsensor-location")) {
 		for (i = 0; i < 3; i++) {
 			sensor_location[i] = of_get_property(np,
 					"hwsensor-location", NULL) + offset;
-- 
2.39.2