drm/i915: Don't store temporary load-detect variables in the generic encoder

Keep all the state required for undoing and restoring the previous pipe
configuration together in a single struct passed from
intel_get_load_detect_pipe() to intel_release_load_detect_pipe() rather
than stuffing them inside the common encoder structure.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 3322582..113e4e7 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1361,13 +1361,14 @@
 	if (intel_tv->base.base.crtc && intel_tv->base.base.crtc->enabled) {
 		type = intel_tv_detect_type(intel_tv, connector);
 	} else if (force) {
-		int dpms_mode;
+		struct intel_load_detect_pipe tmp;
 
 		if (intel_get_load_detect_pipe(&intel_tv->base, connector,
-					       &mode, &dpms_mode)) {
+					       &mode, &tmp)) {
 			type = intel_tv_detect_type(intel_tv, connector);
-			intel_release_load_detect_pipe(&intel_tv->base, connector,
-						       dpms_mode);
+			intel_release_load_detect_pipe(&intel_tv->base,
+						       connector,
+						       &tmp);
 		} else
 			return connector_status_unknown;
 	} else