[Intel-gfx] [PATCH v3 08/18] drm/i915/bios: Don't parse some panel specific data multiple times

[Ville Syrjala <ville.syrjala@linux.intel.com>]

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

Make sure we don't cause memory leaks/etc. by parsing panel_type
specific parts multiple times. The real solution would be to stop
stuffing panel specific stuff into i915->vbt, but in the meantime
let's just make sure we don't leak too badly.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index b246a3a649a0..24e3b2f2485e 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -729,6 +729,10 @@ parse_generic_dtd(struct drm_i915_private *i915)
 	struct drm_display_mode *panel_fixed_mode;
 	int num_dtd;
 
+	/* FIXME stop using i915->vbt for panel specific data */
+	if (i915->vbt.lfp_lvds_vbt_mode)
+		return;
+
 	/*
 	 * Older VBTs provided DTD information for internal displays through
 	 * the "LFP panel tables" block (42).  As of VBT revision 229 the
@@ -908,6 +912,10 @@ parse_sdvo_panel_data(struct drm_i915_private *i915)
 	struct drm_display_mode *panel_fixed_mode;
 	int index;
 
+	/* FIXME stop using i915->vbt for panel specific data */
+	if (i915->vbt.sdvo_lvds_vbt_mode)
+		return;
+
 	index = i915->params.vbt_sdvo_panel_type;
 	if (index == -2) {
 		drm_dbg_kms(&i915->drm,
@@ -1436,6 +1444,10 @@ parse_mipi_config(struct drm_i915_private *i915)
 	int panel_type = i915->vbt.panel_type;
 	enum port port;
 
+	/* FIXME stop using i915->vbt for panel specific data */
+	if (i915->vbt.dsi.config)
+		return;
+
 	/* parse MIPI blocks only if LFP type is MIPI */
 	if (!intel_bios_is_dsi_present(i915, &port))
 		return;
@@ -1756,6 +1768,10 @@ parse_mipi_sequence(struct drm_i915_private *i915)
 	u8 *data;
 	int index = 0;
 
+	/* FIXME stop using i915->vbt for panel specific data */
+	if (i915->vbt.dsi.data)
+		return;
+
 	/* Only our generic panel driver uses the sequence block. */
 	if (i915->vbt.dsi.panel_id != MIPI_DSI_GENERIC_PANEL_ID)
 		return;
-- 
2.35.1