[PATCH 5.6 159/161] platform/x86: sony-laptop: Make resuming thermal profile safer

[Greg Kroah-Hartman]

From: Mattia Dongili <malattia@xxxxxxxx>

commit 476d60b1b4c8a2b14a53ef9b772058f35e604661 upstream.

The thermal handle object may fail initialization when the module is
loaded in the first place. Avoid attempting to use it on resume then.

Fixes: 6d232b29cfce ("ACPICA: Dispatcher: always generate buffer objects for ASL create_field() operator")
Reported-by: Dominik Mierzejewski <dominik@xxxxxxxxxxxxxx>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=207491
Signed-off-by: Mattia Dongili <malattia@xxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/platform/x86/sony-laptop.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -2288,7 +2288,12 @@ static void sony_nc_thermal_cleanup(stru
 #ifdef CONFIG_PM_SLEEP
 static void sony_nc_thermal_resume(void)
 {
-	unsigned int status = sony_nc_thermal_mode_get();
+	int status;
+
+	if (!th_handle)
+		return;
+
+	status = sony_nc_thermal_mode_get();
 
 	if (status != th_handle->mode)
 		sony_nc_thermal_mode_set(th_handle->mode);