drm/exynos: check if raw edid data is fake or not for test

if raw edid data isn't same as fake data then it can't be tested.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 88dae6b012b3..dbbf2fc29ab6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -533,6 +533,12 @@ static int vidi_store_connection(struct device *dev,
         if (!ctx->raw_edid)
                 ctx->raw_edid = (struct edid *)fake_edid_info;
 
+        /* if raw_edid isn't same as fake data then it can't be tested. */
+        if (ctx->raw_edid != (struct edid *)fake_edid_info) {
+                DRM_DEBUG_KMS("edid data is not fake data.\n");
+                return -EINVAL;
+        }
+
         DRM_DEBUG_KMS("requested connection.\n");
 
         drm_helper_hpd_irq_event(ctx->subdrv.drm_dev);