[PATCH v2] gpio: merrifield: Fix build err without CONFIG_ACPI

[Yue Haibing]

From: YueHaibing <yuehaib...@huawei.com>

When building CONFIG_ACPI is not set
gcc warn this:

drivers/gpio/gpio-merrifield.c: In function mrfld_gpio_get_pinctrl_dev_name:
drivers/gpio/gpio-merrifield.c:388:19: error: dereferencing pointer to 
incomplete type struct acpi_device
   put_device(&adev->dev);
                   ^
Reported-by: Hulk Robot <hul...@huawei.com>
Suggested-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Fixes:d00d2109c367 ("gpio: merrifield: Convert to use 
acpi_dev_get_first_match_dev()")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
v2: rework patch use put_acpi_device helper
---
 drivers/gpio/gpio-merrifield.c | 2 +-
 include/linux/acpi.h           | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c
index 2383dc7..99ca18c 100644
--- a/drivers/gpio/gpio-merrifield.c
+++ b/drivers/gpio/gpio-merrifield.c
@@ -385,7 +385,7 @@ static const char *mrfld_gpio_get_pinctrl_dev_name(struct 
mrfld_gpio *priv)
        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);
+               put_acpi_device(adev);
        } else {
                name = "pinctrl-merrifield";
        }
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index a1bd789..2563e13 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1331,12 +1331,19 @@ static inline int find_acpi_cpu_cache_topology(unsigned 
int cpu, int level)
 
 #ifdef CONFIG_ACPI
 extern int acpi_platform_notify(struct device *dev, enum kobject_action 
action);
+
+static inline void put_acpi_device(struct acpi_device *adev)
+{
+       put_device(&adev->dev);
+}
 #else
 static inline int
 acpi_platform_notify(struct device *dev, enum kobject_action action)
 {
        return 0;
 }
+
+static inline void put_acpi_device(struct acpi_device *adev) {}
 #endif
 
 #endif /*_LINUX_ACPI_H*/
-- 
2.7.4