gralloc: make sure rgb buffers have at least 1 line of padding

The display controller may read up to 1 line past the end of the image

Change-Id: Ibb6ed15d1c02d07fe955922249c71b7ce9bce0fc
Signed-off-by: Greg Hackmann <ghackmann@google.com>

diff --git a/gralloc/gralloc.cpp b/gralloc/gralloc.cpp
index 708f080505d6e6d2d29dd014dbace7aad0a06803..1c0180b1280af7da8b102a7835e35a72a036d520 100644 (file)
--- a/gralloc/gralloc.cpp
+++ b/gralloc/gralloc.cpp
@@ -155,7 +155,7 @@ static int gralloc_alloc_rgb(int ionfd, int w, int h, int format, int usage,
             return -EINVAL;
     }
     bpr = ALIGN(w*bpp, 16);
-    vstride = ALIGN(h, 16);
+    vstride = ALIGN(h+1, 16);
     size = bpr * vstride;
     *stride = bpr / bpp;
     size = ALIGN(size, PAGE_SIZE);