--- /dev/null
+From 270319565a07f7ceeb12fac1c267d0dd9ebf2d57 Mon Sep 17 00:00:00 2001
+From: Meng Mingming <mingming.meng@nxp.com>
+Date: Wed, 16 Nov 2016 15:05:51 +0800
+Subject: [PATCH 17/17] MGS-2397 [#ccc] Enable double buffer with
+ fb_pan_display for weston compositor
+
+Refine offset calculation.
+
+Upstream-Status: Inappropriate [i.MX specific]
+
+Date: Nov 16, 2016
+Signed-off-by: Meng Mingming <mingming.meng@nxp.com>
+---
+ src/g2d-renderer.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/g2d-renderer.c b/src/g2d-renderer.c
+index 41c4d9e..c30aa62 100644
+--- a/src/g2d-renderer.c
++++ b/src/g2d-renderer.c
+@@ -78,6 +78,7 @@ struct fb_screeninfo {
+ size_t buffer_length; /* length of frame buffer memory in bytes */
+ size_t physical;
+ size_t stride;
++ size_t stride_bytes;
+ enum g2d_format pixel_format; /* frame buffer pixel format */
+ int fb_fd;
+ };
+@@ -1136,6 +1137,7 @@ fb_query_screen_info(struct g2d_output_state *output, int fd,
+ info->physical = fixinfo->smem_start;
+ info->buffer_length = fixinfo->smem_len;
+ info->stride = fixinfo->line_length / (varinfo->bits_per_pixel >> 3);
++ info->stride_bytes = fixinfo->line_length;
+ calculate_g2d_format(varinfo, &info->pixel_format);
+
+ if (info->pixel_format < 0) {
+@@ -1205,7 +1207,7 @@ g2d_renderer_surface_create(struct g2d_output_state *go, struct g2d_renderer *gr
+ return -1;
+ }
+ go->renderSurf = zalloc(sizeof(struct g2d_surfaceEx) * go->nNumBuffers);
+- offset = go->fb_info.buffer_length/go->nNumBuffers;
++ offset = go->fb_info.stride_bytes * go->fb_info.y_resolution;
+ for(i = 0; i < go->nNumBuffers; i++)
+ {
+ get_G2dSurface_from_screeninfo(&go->fb_info, &go->renderSurf[i]);
+--
+2.7.4
+
