gpio: merrifield: Convert to use acpi_dev_get_first_match_dev()

acpi_dev_get_first_match_name() is deprecated and going to be removed
because it leaks a reference.

Convert the driver to use acpi_dev_get_first_match_dev() instead.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 14 insertions, 4 deletions

diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c
index 7c659fdaa6d5..2383dc78b123 100644
--- a/drivers/gpio/gpio-merrifield.c
+++ b/drivers/gpio/gpio-merrifield.c
@@ -377,10 +377,20 @@ static void mrfld_irq_init_hw(struct mrfld_gpio *priv)
         }
 }
 
-static const char *mrfld_gpio_get_pinctrl_dev_name(void)
+static const char *mrfld_gpio_get_pinctrl_dev_name(struct mrfld_gpio *priv)
 {
-        const char *dev_name = acpi_dev_get_first_match_name("INTC1002", NULL, -1);
-        return dev_name ? dev_name : "pinctrl-merrifield";
+        struct acpi_device *adev;
+        const char *name;
+
+        adev = acpi_dev_get_first_match_dev("INTC1002", NULL, -1);
+        if (adev) {
+                name = devm_kstrdup(priv->dev, acpi_dev_name(adev), GFP_KERNEL);
+                put_device(&adev->dev);
+        } else {
+                name = "pinctrl-merrifield";
+        }
+
+        return name;
 }
 
 static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id)
@@ -441,7 +451,7 @@ static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id
                 return retval;
         }
 
-        pinctrl_dev_name = mrfld_gpio_get_pinctrl_dev_name();
+        pinctrl_dev_name = mrfld_gpio_get_pinctrl_dev_name(priv);
         for (i = 0; i < ARRAY_SIZE(mrfld_gpio_ranges); i++) {
                 range = &mrfld_gpio_ranges[i];
                 retval = gpiochip_add_pin_range(&priv->chip,