linux-kernel - [PATCH] ASoC: soc-core: Stop using of_property_read

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Message-ID: <db10e96fbda121e7456d70e97a013cbfc9755f4d.1737533954.git.geert+renesas@glider.be>
Date: Wed, 22 Jan 2025 09:21:27 +0100
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
	Rob Herring <robh@...nel.org>
Cc: linux-sound@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH] ASoC: soc-core: Stop using of_property_read_bool() for non-boolean properties

On R-Car:

    OF: /sound: Read of boolean property 'simple-audio-card,bitclock-master' with a value.
    OF: /sound: Read of boolean property 'simple-audio-card,frame-master' with a value.

or:

    OF: /soc/sound@...00000/ports/port@...ndpoint: Read of boolean property 'bitclock-master' with a value.
    OF: /soc/sound@...00000/ports/port@...ndpoint: Read of boolean property 'frame-master' with a value.

The use of of_property_read_bool() for non-boolean properties is
deprecated in favor of of_property_present() when testing for property
presence.

Replace testing for presence before calling of_property_read_u32() by
testing for an -EINVAL return value from the latter, to simplify the
code.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
Seen since commit c141ecc3cecd7647 ("of: Warn when
of_property_read_bool() is used on non-boolean properties") in
dt-rh/for-next.

I could not exercise all code paths, so review/testing would be
appreciated. Thanks!
---
 sound/soc/soc-core.c | 32 +++++++++++++-------------------
 1 file changed, 13 insertions(+), 19 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 3c6d8aef4130901c..26b34b6885083908 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3046,7 +3046,7 @@ int snd_soc_of_parse_pin_switches(struct snd_soc_card *card, const char *prop)
 	unsigned int i, nb_controls;
 	int ret;
 
-	if (!of_property_read_bool(dev->of_node, prop))
+	if (!of_property_present(dev->of_node, prop))
 		return 0;
 
 	strings = devm_kcalloc(dev, nb_controls_max,
@@ -3120,23 +3120,17 @@ int snd_soc_of_parse_tdm_slot(struct device_node *np,
 	if (rx_mask)
 		snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
 
-	if (of_property_read_bool(np, "dai-tdm-slot-num")) {
-		ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
-		if (ret)
-			return ret;
-
-		if (slots)
-			*slots = val;
-	}
-
-	if (of_property_read_bool(np, "dai-tdm-slot-width")) {
-		ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
-		if (ret)
-			return ret;
+	ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
+	if (ret && ret != -EINVAL)
+		return ret;
+	if (!ret && slots)
+		*slots = val;
 
-		if (slot_width)
-			*slot_width = val;
-	}
+	ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
+	if (ret && ret != -EINVAL)
+		return ret;
+	if (!ret && slot_width)
+		*slot_width = val;
 
 	return 0;
 }
@@ -3403,12 +3397,12 @@ unsigned int snd_soc_daifmt_parse_clock_provider_raw(struct device_node *np,
 	 * check "[prefix]frame-master"
 	 */
 	snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
-	bit = of_property_read_bool(np, prop);
+	bit = of_property_present(np, prop);
 	if (bit && bitclkmaster)
 		*bitclkmaster = of_parse_phandle(np, prop, 0);
 
 	snprintf(prop, sizeof(prop), "%sframe-master", prefix);
-	frame = of_property_read_bool(np, prop);
+	frame = of_property_present(np, prop);
 	if (frame && framemaster)
 		*framemaster = of_parse_phandle(np, prop, 0);
 
-- 
2.43.0