linux-kernel - [PATCH v2] ASoC: wm8580: Simplify probe()

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Date:   Mon, 28 Aug 2023 18:40:19 +0100
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, patches@...nsource.cirrus.com,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2] ASoC: wm8580: Simplify probe()

Simplify probe() by replacing of_match_device->i2c_get_match_data() and
extend matching support for ID table.

While at it, remove comma in the terminator entry and simplify probe()
by replacing dev_err->dev_err_probe().

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
Note:
 This patch is only compile tested.

v1->v2:
 * Added Ack from Charles Keepax.
 * Removed comma in the terminator entry.
 * Restored original error code -EINVAL
---
 sound/soc/codecs/wm8580.c | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/sound/soc/codecs/wm8580.c b/sound/soc/codecs/wm8580.c
index 6d22f7d40ec2..28c0ba348634 100644
--- a/sound/soc/codecs/wm8580.c
+++ b/sound/soc/codecs/wm8580.c
@@ -988,16 +988,8 @@ static const struct wm8580_driver_data wm8581_data = {
 	.num_dacs = 4,
 };
 
-static const struct of_device_id wm8580_of_match[] = {
-	{ .compatible = "wlf,wm8580", .data = &wm8580_data },
-	{ .compatible = "wlf,wm8581", .data = &wm8581_data },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, wm8580_of_match);
-
 static int wm8580_i2c_probe(struct i2c_client *i2c)
 {
-	const struct of_device_id *of_id;
 	struct wm8580_priv *wm8580;
 	int ret, i;
 
@@ -1022,14 +1014,9 @@ static int wm8580_i2c_probe(struct i2c_client *i2c)
 
 	i2c_set_clientdata(i2c, wm8580);
 
-	of_id = of_match_device(wm8580_of_match, &i2c->dev);
-	if (of_id)
-		wm8580->drvdata = of_id->data;
-
-	if (!wm8580->drvdata) {
-		dev_err(&i2c->dev, "failed to find driver data\n");
-		return -EINVAL;
-	}
+	wm8580->drvdata = i2c_get_match_data(i2c);
+	if (!wm8580->drvdata)
+		return dev_err_probe(&i2c->dev, -EINVAL, "failed to find driver data\n");
 
 	ret = devm_snd_soc_register_component(&i2c->dev,
 			&soc_component_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));
@@ -1037,6 +1024,13 @@ static int wm8580_i2c_probe(struct i2c_client *i2c)
 	return ret;
 }
 
+static const struct of_device_id wm8580_of_match[] = {
+	{ .compatible = "wlf,wm8580", .data = &wm8580_data },
+	{ .compatible = "wlf,wm8581", .data = &wm8581_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, wm8580_of_match);
+
 static const struct i2c_device_id wm8580_i2c_id[] = {
 	{ "wm8580", (kernel_ulong_t)&wm8580_data },
 	{ "wm8581", (kernel_ulong_t)&wm8581_data },
-- 
2.25.1