linux-kernel - [PATCH] ASoC: Use of_property

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Message-ID: <20240731191312.1710417-19-robh@kernel.org>
Date: Wed, 31 Jul 2024 13:12:57 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>
Cc: linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: [PATCH] ASoC: Use of_property_present()

Use of_property_present() to test for property presence rather than
of_get_property(). This is part of a larger effort to remove callers
of of_get_property() and similar functions. of_get_property() leaks
the DT property data pointer which is a problem for dynamically
allocated nodes which may be freed.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 sound/soc/fsl/mpc5200_psc_i2s.c | 2 +-
 sound/soc/tegra/tegra_pcm.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c
index af8b9d098d2d..931b430fa983 100644
--- a/sound/soc/fsl/mpc5200_psc_i2s.c
+++ b/sound/soc/fsl/mpc5200_psc_i2s.c
@@ -184,7 +184,7 @@ static int psc_i2s_of_probe(struct platform_device *op)
 
 	/* Check for the codec handle.  If it is not present then we
 	 * are done */
-	if (!of_get_property(op->dev.of_node, "codec-handle", NULL))
+	if (!of_property_present(op->dev.of_node, "codec-handle"))
 		return 0;
 
 	/* Due to errata in the dma mode; need to line up enabling
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index 4bdbcd2635ef..05d59e03b1c5 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -213,7 +213,7 @@ int tegra_pcm_construct(struct snd_soc_component *component,
 	 * Fallback for backwards-compatibility with older device trees that
 	 * have the iommus property in the virtual, top-level "sound" node.
 	 */
-	if (!of_get_property(dev->of_node, "iommus", NULL))
+	if (!of_property_present(dev->of_node, "iommus"))
 		dev = rtd->card->snd_card->dev;
 
 	return tegra_pcm_dma_allocate(dev, rtd, tegra_pcm_hardware.buffer_bytes_max);
-- 
2.43.0