linux-kernel - [PATCH v4 05/15] iio: sx9310: Change from .probe to .probe

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Message-Id: <20200803131544.v4.5.Ieb5fdf7381764835dad0b3099c7b19ba754e4c47@changeid>
Date:   Mon,  3 Aug 2020 17:41:44 -0600
From:   Daniel Campello <campello@...omium.org>
To:     LKML <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Daniel Campello <campello@...omium.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Gwendal Grignou <gwendal@...omium.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org
Subject: [PATCH v4 05/15] iio: sx9310: Change from .probe to .probe_new

Uses .probe_new in place of .probe. Also uses device_get_match_data()
for whoami matching.

Signed-off-by: Daniel Campello <campello@...omium.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
---

Changes in v4: None
Changes in v3: None
Changes in v2:
 - Added '\n' to dev_err()

 drivers/iio/proximity/sx9310.c | 39 ++++++++++++----------------------
 1 file changed, 14 insertions(+), 25 deletions(-)

diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index 3642d23cd5e6f4..c89a4e27201796 100644
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -138,7 +138,7 @@ struct sx9310_data {
 	struct completion completion;
 	unsigned int chan_read, chan_event;
 	int channel_users[SX9310_NUM_CHANNELS];
-	int whoami;
+	unsigned int whoami;
 };
 
 static const struct iio_event_spec sx9310_events[] = {
@@ -857,24 +857,15 @@ static int sx9310_init_device(struct iio_dev *indio_dev)
 
 static int sx9310_set_indio_dev_name(struct device *dev,
 				     struct iio_dev *indio_dev,
-				     const struct i2c_device_id *id, int whoami)
+				     unsigned int whoami)
 {
-	const struct acpi_device_id *acpi_id;
-
-	/* id will be NULL when enumerated via ACPI */
-	if (id) {
-		if (id->driver_data != whoami)
-			dev_err(dev, "WHOAMI does not match i2c_device_id: %s",
-				id->name);
-	} else if (ACPI_HANDLE(dev)) {
-		acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev);
-		if (!acpi_id)
-			return -ENODEV;
-		if (acpi_id->driver_data != whoami)
-			dev_err(dev, "WHOAMI does not match acpi_device_id: %s",
-				acpi_id->id);
-	} else
+	unsigned int long ddata;
+
+	ddata = (uintptr_t)device_get_match_data(dev);
+	if (ddata != whoami) {
+		dev_err(dev, "WHOAMI does not match device data: %u\n", whoami);
 		return -ENODEV;
+	}
 
 	switch (whoami) {
 	case SX9310_WHOAMI_VALUE:
@@ -884,15 +875,14 @@ static int sx9310_set_indio_dev_name(struct device *dev,
 		indio_dev->name = "sx9311";
 		break;
 	default:
-		dev_err(dev, "unexpected WHOAMI response: %u", whoami);
+		dev_err(dev, "unexpected WHOAMI response: %u\n", whoami);
 		return -ENODEV;
 	}
 
 	return 0;
 }
 
-static int sx9310_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static int sx9310_probe(struct i2c_client *client)
 {
 	int ret;
 	struct iio_dev *indio_dev;
@@ -918,8 +908,7 @@ static int sx9310_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	ret = sx9310_set_indio_dev_name(&client->dev, indio_dev, id,
-					data->whoami);
+	ret = sx9310_set_indio_dev_name(&client->dev, indio_dev, data->whoami);
 	if (ret < 0)
 		return ret;
 
@@ -1032,8 +1021,8 @@ static const struct acpi_device_id sx9310_acpi_match[] = {
 MODULE_DEVICE_TABLE(acpi, sx9310_acpi_match);
 
 static const struct of_device_id sx9310_of_match[] = {
-	{ .compatible = "semtech,sx9310" },
-	{ .compatible = "semtech,sx9311" },
+	{ .compatible = "semtech,sx9310", (void *)SX9310_WHOAMI_VALUE },
+	{ .compatible = "semtech,sx9311", (void *)SX9311_WHOAMI_VALUE },
 	{},
 };
 MODULE_DEVICE_TABLE(of, sx9310_of_match);
@@ -1052,7 +1041,7 @@ static struct i2c_driver sx9310_driver = {
 		.of_match_table = sx9310_of_match,
 		.pm = &sx9310_pm_ops,
 	},
-	.probe		= sx9310_probe,
+	.probe_new	= sx9310_probe,
 	.id_table	= sx9310_id,
 };
 module_i2c_driver(sx9310_driver);
-- 
2.28.0.163.g6104cc2f0b6-goog