[RFC 1/2] ACPI: x86: Move acpi_quirk_skip_serdev_enumeration() out of CONFIG_X86_ANDROID_TABLETS

[Hans de Goede <hdegoede@redhat.com>]

Some recent(ish) Dell AIO devices have a backlight controller board
connected to an UART.

This UART has a DELL0501 HID with CID set to PNP0501 so that the UART is
still handled by 8250_pnp.c. Unfortunately there is no separate ACPI device
with an UartSerialBusV2() resource to model the backlight-controller.

The next patch in this series will use acpi_quirk_skip_serdev_enumeration()
to still create a serdev for this for a backlight driver to bind to
instead of creating a /dev/ttyS0.

This new acpi_quirk_skip_serdev_enumeration() use is not limited to Android
X86 tablets, so move it out of the ifdef CONFIG_X86_ANDROID_TABLETS block.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/acpi/x86/utils.c | 18 ++++++++++++++----
 include/acpi/acpi_bus.h  | 22 +++++++++++-----------
 2 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index b37a4f44d05f..185176a521ad 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -437,7 +437,7 @@ bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
 
-int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
 {
 	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
 	const struct dmi_system_id *dmi_id;
@@ -445,8 +445,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
 	u64 uid;
 	int ret;
 
-	*skip = false;
-
 	ret = acpi_dev_uid_to_integer(adev, &uid);
 	if (ret)
 		return 0;
@@ -472,7 +470,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
 
 bool acpi_quirk_skip_gpio_event_handlers(void)
 {
@@ -487,8 +484,21 @@ bool acpi_quirk_skip_gpio_event_handlers(void)
 	return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
+#else
+static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	return 0;
+}
 #endif
 
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	*skip = false;
+
+	return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
+}
+EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
+
 /* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
 static const struct {
 	const char *hid;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index e4d24d3f9abb..446225aada50 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -749,6 +749,7 @@ bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *s
 bool acpi_quirk_skip_acpi_ac_and_battery(void);
 int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
 void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
 #else
 static inline bool acpi_device_override_status(struct acpi_device *adev,
 					       unsigned long long *status)
@@ -766,23 +767,22 @@ static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
 static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
 {
 }
-#endif
-
-#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
-bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
-int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
-bool acpi_quirk_skip_gpio_event_handlers(void);
-#else
-static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
-{
-	return false;
-}
 static inline int
 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
 {
 	*skip = false;
 	return 0;
 }
+#endif
+
+#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
+bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
+bool acpi_quirk_skip_gpio_event_handlers(void);
+#else
+static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
+{
+	return false;
+}
 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
 {
 	return false;
-- 
2.43.0