This patch is to preserve the display mode header during the mode adjustment.
Display mode header is overwritten with the adjusted mode header which is
throwing the stack dump.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index ee110c9..c7844ea 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1974,6 +1974,8 @@ static void hdmi_mode_fixup(void *ctx, struct drm_connector *connector,
 {
        struct drm_display_mode *m;
        struct hdmi_context *hdata = ctx;
+       struct drm_mode_object base;
+       struct list_head head;

        int index;

        DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
@@ -2002,7 +2004,13 @@ static void hdmi_mode_fixup(void *ctx, struct drm_connector *connector,
                if (index >= 0) {

                        DRM_INFO("desired mode doesn't exist so\n");
                        DRM_INFO("use the most suitable mode among modes.\n");
+
+                       /* preserve display mode header while copying. */
+                       head = adjusted_mode->head;
+                       base = adjusted_mode->base;
                        memcpy(adjusted_mode, m, sizeof(*m));
+                       adjusted_mode->head = head;
+                       adjusted_mode->base = base;
                        break;
                }
        }
--
1.7.0.4

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