linux-kernel - [PATCH v1 03/13] iio: imu: inv_mpu6050: Replace strange way of checking type of enumeration

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Message-ID: <20241023152145.3564943-4-andriy.shevchenko@linux.intel.com>
Date: Wed, 23 Oct 2024 18:17:26 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Marius Cristea <marius.cristea@...rochip.com>,
	Trevor Gamblin <tgamblin@...libre.com>,
	Hans de Goede <hdegoede@...hat.com>,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@....com>
Subject: [PATCH v1 03/13] iio: imu: inv_mpu6050: Replace strange way of checking type of enumeration

When device is enumerated via ACPI the respective device node is of
ACPI device type. Use that to check for ACPI enumeration, rather than
calling for full match which is O(n) vs. O(1) for the regular check.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
index b15d8c94cc11..373e59f6d91a 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
@@ -104,14 +104,11 @@ static int inv_mpu_process_acpi_config(struct i2c_client *client,
 				       unsigned short *secondary_addr)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
-	const struct acpi_device_id *id;
 	u32 i2c_addr = 0;
 	LIST_HEAD(resources);
 	int ret;
 
-	id = acpi_match_device(client->dev.driver->acpi_match_table,
-			       &client->dev);
-	if (!id)
+	if (!is_acpi_device_node(dev_fwnode(&client->dev)))
 		return -ENODEV;
 
 	ret = acpi_dev_get_resources(adev, &resources,
-- 
2.43.0.rc1.1336.g36b5255a03ac