linux-kernel - [PATCH v1 04/13] iio: acpi: Improve iio_read_acpi_mount

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Message-ID: <20241023152145.3564943-5-andriy.shevchenko@linux.intel.com>
Date: Wed, 23 Oct 2024 18:17:27 +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>,
	Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH v1 04/13] iio: acpi: Improve iio_read_acpi_mount_matrix()

From: Andy Shevchenko <andy.shevchenko@...il.com>

By using ACPI_HANDLE() the handler argument can be retrieved directly.
Replace ACPI_COMPANION() + dereference with ACPI_HANDLE().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/iio/industrialio-acpi.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/industrialio-acpi.c b/drivers/iio/industrialio-acpi.c
index 981b75d40780..1e46908f9534 100644
--- a/drivers/iio/industrialio-acpi.c
+++ b/drivers/iio/industrialio-acpi.c
@@ -28,17 +28,21 @@ bool iio_read_acpi_mount_matrix(struct device *dev,
 				char *acpi_method)
 {
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-	struct acpi_device *adev = ACPI_COMPANION(dev);
 	char *str;
 	union acpi_object *obj, *elements;
+	acpi_handle handle;
 	acpi_status status;
 	int i, j, val[3];
 	bool ret = false;
 
-	if (!adev || !acpi_has_method(adev->handle, acpi_method))
+	handle = ACPI_HANDLE(dev);
+	if (!handle)
 		return false;
 
-	status = acpi_evaluate_object(adev->handle, acpi_method, NULL, &buffer);
+	if (!acpi_has_method(handle, acpi_method))
+		return false;
+
+	status = acpi_evaluate_object(handle, acpi_method, NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
 		dev_err(dev, "Failed to get ACPI mount matrix: %d\n", status);
 		return false;
-- 
2.43.0.rc1.1336.g36b5255a03ac