Re: [PATCH] ASoC: Use of_property_present() for testing DT property presence

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On 3/10/2023 3:47 PM, Rob Herring wrote:
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@xxxxxxxxxx>
---
  sound/soc/codecs/lpass-macro-common.c | 2 +-
  sound/soc/generic/audio-graph-card.c  | 2 +-
  sound/soc/generic/audio-graph-card2.c | 2 +-
  sound/soc/mxs/mxs-sgtl5000.c          | 2 +-
  sound/soc/samsung/i2s.c               | 2 +-
  sound/soc/sh/fsi.c                    | 2 +-
  sound/soc/stm/stm32_i2s.c             | 2 +-
  sound/soc/stm/stm32_sai_sub.c         | 4 ++--
  sound/soc/tegra/tegra_asoc_machine.c  | 2 +-
  9 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/lpass-macro-common.c b/sound/soc/codecs/lpass-macro-common.c
index 1b9082d237c1..f54baaad54d4 100644
--- a/sound/soc/codecs/lpass-macro-common.c
+++ b/sound/soc/codecs/lpass-macro-common.c
@@ -16,7 +16,7 @@ struct lpass_macro *lpass_macro_pds_init(struct device *dev)
  	struct lpass_macro *l_pds;
  	int ret;
- if (!of_find_property(dev->of_node, "power-domains", NULL))
+	if (!of_property_present(dev->of_node, "power-domains"))
  		return NULL;
l_pds = devm_kzalloc(dev, sizeof(*l_pds), GFP_KERNEL);
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c
index 5daa824a4ffc..d788f5f23a8a 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -78,7 +78,7 @@ static int graph_get_dai_id(struct device_node *ep)
  		 * only of_graph_parse_endpoint().
  		 * We need to check "reg" property
  		 */
-		if (of_get_property(ep,   "reg", NULL))
+		if (of_property_present(ep,   "reg"))

Bit of nit picking, but any reason, why there are multiple spaces, before "reg" here?

  			return info.id;
node = of_get_parent(ep);
diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c
index 06609a526b78..259544f64df9 100644
--- a/sound/soc/generic/audio-graph-card2.c
+++ b/sound/soc/generic/audio-graph-card2.c
@@ -376,7 +376,7 @@ static int graph_get_dai_id(struct device_node *ep)
  		 * only of_graph_parse_endpoint().
  		 * We need to check "reg" property
  		 */
-		if (of_get_property(ep,   "reg", NULL))
+		if (of_property_present(ep,   "reg"))

And here?





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