[Intel-gfx] [PATCH] drm/i915: remove unused i915->active_pipes

[Jani Nikula <jani.nikula@intel.com>]

Apparently the last reader of i915->active_pipes was removed with commit
ef79d62b5ce5 ("drm/i915: Encapsulate dbuf state handling harder"), and
now it's only ever written to. Remove it completely.

Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 4 +---
 drivers/gpu/drm/i915/i915_drv.h              | 6 ------
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index fe5ad599c218..a692971b0209 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3781,7 +3781,6 @@ static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
 
 	intel_display_power_put_all_in_set(dev_priv, &crtc->enabled_power_domains);
 
-	dev_priv->active_pipes &= ~BIT(pipe);
 	cdclk_state->min_cdclk[pipe] = 0;
 	cdclk_state->min_voltage_level[pipe] = 0;
 	cdclk_state->active_pipes &= ~BIT(pipe);
@@ -12351,8 +12350,7 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
 			    enableddisabled(crtc_state->hw.active));
 	}
 
-	dev_priv->active_pipes = cdclk_state->active_pipes =
-		dbuf_state->active_pipes = active_pipes;
+	cdclk_state->active_pipes = dbuf_state->active_pipes = active_pipes;
 
 	readout_plane_state(dev_priv);
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f64ba566fe8c..033031169d74 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1015,12 +1015,6 @@ struct drm_i915_private {
 
 	struct list_head global_obj_list;
 
-	/*
-	 * For reading active_pipes holding any crtc lock is
-	 * sufficient, for writing must hold all of them.
-	 */
-	u8 active_pipes;
-
 	struct i915_wa_list gt_wa_list;
 
 	struct i915_frontbuffer_tracking fb_tracking;
-- 
2.20.1