From: Rahul Sharma <rahul.sharma@samsung.com>
Date: Tue, 20 Nov 2012 11:28:26 +0000 (+0530)
Subject: drm: exynos: fix for loosing display mode header during mode adjustment
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a3f9bcab509a4bf003942e7e2048904cfe7cb5c5;p=linux-beck.git

drm: exynos: fix for loosing display mode header during mode adjustment

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

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 6716ecd3b3e9..a4052271a1f6 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1979,9 +1979,18 @@ static void hdmi_mode_fixup(void *ctx, struct drm_connector *connector,
 			index = hdmi_v14_conf_index(m);
 
 		if (index >= 0) {
+			struct drm_mode_object base;
+			struct list_head head;
+
 			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;
 		}
 	}