[Intel-gfx] [PATCH 05/14] drm/i915: Fix HPLL watermark readout for g4x

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

If HPLL watermarks are already enabled, let's not mark them as
disabled by forgetting to bump 'level' before we call
g4x_raw_plane_wm_set().

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 661bc6fdf38c..990ee5a590d3 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6468,7 +6468,8 @@ void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv)
 		for_each_plane_id_on_crtc(crtc, plane_id)
 			raw->plane[plane_id] = active->wm.plane[plane_id];
 
-		if (++level > max_level)
+		level = G4X_WM_LEVEL_SR;
+		if (level > max_level)
 			goto out;
 
 		raw = &crtc_state->wm.g4x.raw[level];
@@ -6477,7 +6478,8 @@ void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv)
 		raw->plane[PLANE_SPRITE0] = 0;
 		raw->fbc = active->sr.fbc;
 
-		if (++level > max_level)
+		level = G4X_WM_LEVEL_HPLL;
+		if (level > max_level)
 			goto out;
 
 		raw = &crtc_state->wm.g4x.raw[level];
@@ -6486,6 +6488,7 @@ void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv)
 		raw->plane[PLANE_SPRITE0] = 0;
 		raw->fbc = active->hpll.fbc;
 
+		level++;
 	out:
 		for_each_plane_id_on_crtc(crtc, plane_id)
 			g4x_raw_plane_wm_set(crtc_state, level,
-- 
2.26.3