[PATCH v3 1/1] platform/x86: asus-wmi: fix build without CONFIG_SUSPEND

[Luke Jones <luke@ljones.dev>]

The patch "Refactor Ally suspend/resume" introduced an
acpi_s2idle_dev_ops for use with ROG Ally which caused a build error
if CONFIG_SUSPEND was not defined.

Signed-off-by: Luke Jones <luke@ljones.dev>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505090418.DaeaXe4i-lkp@intel.com/
Fixes: feea7bd6b02d ("platform/x86: asus-wmi: Refactor Ally suspend/resume")
---
 drivers/platform/x86/asus-wmi.c | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 27f11643a00d..cbbd0ef0906f 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -5005,23 +5005,24 @@ static int asus_hotk_restore(struct device *device)
 	return 0;
 }
 
-static void asus_ally_s2idle_restore(void)
+static int asus_hotk_prepare(struct device *device)
 {
 	if (use_ally_mcu_hack == ASUS_WMI_ALLY_MCU_HACK_ENABLED) {
 		acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE,
-					   ASUS_USB0_PWR_EC0_CSEE_ON);
+					   ASUS_USB0_PWR_EC0_CSEE_OFF);
 		msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
 	}
+	return 0;
 }
 
-static int asus_hotk_prepare(struct device *device)
+#if defined(CONFIG_SUSPEND)
+static void asus_ally_s2idle_restore(void)
 {
 	if (use_ally_mcu_hack == ASUS_WMI_ALLY_MCU_HACK_ENABLED) {
 		acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE,
-					   ASUS_USB0_PWR_EC0_CSEE_OFF);
+					   ASUS_USB0_PWR_EC0_CSEE_ON);
 		msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
 	}
-	return 0;
 }
 
 /* Use only for Ally devices due to the wake_on_ac */
@@ -5029,6 +5030,21 @@ static struct acpi_s2idle_dev_ops asus_ally_s2idle_dev_ops = {
 	.restore = asus_ally_s2idle_restore,
 };
 
+static void asus_s2idle_check_register(void)
+{
+	if (acpi_register_lps0_dev(&asus_ally_s2idle_dev_ops))
+		pr_warn("failed to register LPS0 sleep handler in asus-wmi\n");
+}
+
+static void asus_s2idle_check_unregister(void)
+{
+	acpi_unregister_lps0_dev(&asus_ally_s2idle_dev_ops);
+}
+#else
+static void asus_s2idle_check_register(void) {}
+static void asus_s2idle_check_unregister(void) {}
+#endif /* CONFIG_SUSPEND */
+
 static const struct dev_pm_ops asus_pm_ops = {
 	.thaw = asus_hotk_thaw,
 	.restore = asus_hotk_restore,
@@ -5060,9 +5076,7 @@ static int asus_wmi_probe(struct platform_device *pdev)
 			return ret;
 	}
 
-	ret = acpi_register_lps0_dev(&asus_ally_s2idle_dev_ops);
-	if (ret)
-		pr_warn("failed to register LPS0 sleep handler in asus-wmi\n");
+	asus_s2idle_check_register();
 
 	return asus_wmi_add(pdev);
 }
@@ -5096,7 +5110,8 @@ EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
 
 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
 {
-	acpi_unregister_lps0_dev(&asus_ally_s2idle_dev_ops);
+	asus_s2idle_check_unregister();
+
 	platform_device_unregister(driver->platform_device);
 	platform_driver_unregister(&driver->platform_driver);
 	used = false;
-- 
2.49.0