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From:   "Rafael J. Wysocki" <rjw@rjwysocki.net>
To:     Linux ACPI <linux-acpi@vger.kernel.org>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>, linux-gpio@vger.kernel.org
Subject: [PATCH v1 1/7] gpio-amdpt: ACPI: Use the ACPI_COMPANION() macro directly
Date:   Tue, 12 Oct 2021 19:44:08 +0200
Message-ID: <2179627.iZASKD2KPV@kreacher>
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From: Rafael J. Wysocki <rafael@kernel.org>

The ACPI_HANDLE() macro is a wrapper arond the ACPI_COMPANION()
macro and the ACPI handle produced by the former comes from the
ACPI device object produced by the latter, so it is way more
straightforward to evaluate the latter directly instead of passing
the handle produced by the former to acpi_bus_get_device().

Modify pt_gpio_probe() accordingly (no intentional functional impact).

Signed-off-by: Rafael J. Wysocki <rafael@kernel.org>
---
 drivers/gpio/gpio-amdpt.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Index: linux-pm/drivers/gpio/gpio-amdpt.c
===================================================================
--- linux-pm.orig/drivers/gpio/gpio-amdpt.c
+++ linux-pm/drivers/gpio/gpio-amdpt.c
@@ -72,12 +72,10 @@ static void pt_gpio_free(struct gpio_chi
 static int pt_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct acpi_device *acpi_dev;
-	acpi_handle handle = ACPI_HANDLE(dev);
 	struct pt_gpio_chip *pt_gpio;
 	int ret = 0;
 
-	if (acpi_bus_get_device(handle, &acpi_dev)) {
+	if (!ACPI_COMPANION(dev)) {
 		dev_err(dev, "PT GPIO device node not found\n");
 		return -ENODEV;
 	}