led-qcom: Check for LED driver

The hw_pattern attribute is driver specific. Ensure we don't apply the LED pattern to unknown drivers.

Closes: #77 (closed)

This also fixes a leak in the qcom-multicolor handler.

@DylanVanAssche could you check this on a real device, I only have the umockdev files for testing.

src/fbd-dev-led-qcom-multicolor.c

@@ -15,8 +15,6 @@
 
 #include <gio/gio.h>
 
-#define LED_HW_PATTERN_ATTR   "hw_pattern"
-#define LED_REPEAT_ATTR       "repeat"
 
 typedef struct _FbdDevLedQcomMulticolor {
   FbdDevLedMulticolor parent;
@@ -51,11 +49,24 @@ fbd_dev_led_qcom_multicolor_start_periodic (FbdDevLed *led,
   return fbd_dev_led_start_periodic (FBD_DEV_LED (self->qcom_led), max_brightness_percentage, freq);
 }
 
+static void
+fbd_dev_led_qcom_multicolor_finalize (GObject *object)
+{
+  FbdDevLedQcomMulticolor *self = FBD_DEV_LED_QCOM_MULTICOLOR (object);
+
+  g_clear_object (&self->qcom_led);
+
+  G_OBJECT_CLASS (fbd_dev_led_qcom_multicolor_parent_class)->finalize (object);
+}
+
 static void
 fbd_dev_led_qcom_multicolor_class_init (FbdDevLedQcomMulticolorClass *klass)
 {
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
   FbdDevLedClass *fbd_dev_led_class = FBD_DEV_LED_CLASS (klass);
 
+  object_class->finalize = fbd_dev_led_qcom_multicolor_finalize;
+
   fbd_dev_led_class->probe = fbd_dev_led_qcom_multicolor_probe;
   fbd_dev_led_class->start_periodic = fbd_dev_led_qcom_multicolor_start_periodic;
 }