[Intel-gfx] [PATCH v2 5/5] drm/edid: Make sure the CEA mode arrays have the correct amount of modes

[Ville Syrjala]

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

We depend on a specific relationship between the VIC number and the
index in the CEA mode arrays. Assert that the arrays have the excpected
size to make sure we've not accidentally left holes in them.

Cc: Hans Verkuil <hansverk at cisco.com>
Cc: Shashank Sharma <shashank.sharma at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_edid.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index e6b1e785d158..f0b449225727 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3209,6 +3209,9 @@ static u8 *drm_find_cea_extension(const struct edid *edid)
 
 static const struct drm_display_mode *cea_mode_for_vic(u8 vic)
 {
+	BUILD_BUG_ON(ARRAY_SIZE(edid_cea_modes_1) != 127);
+	BUILD_BUG_ON(ARRAY_SIZE(edid_cea_modes_193) != 27);
+
 	if (vic >= 1 && vic < 1 + ARRAY_SIZE(edid_cea_modes_1))
 		return &edid_cea_modes_1[vic - 1];
 	if (vic >= 193 && vic < 193 + ARRAY_SIZE(edid_cea_modes_193))
-- 
2.21.0