From 92eac93723361ff4f28c6b341edbb2658c09f099 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olvaffe@gmail.com>
Date: Sat, 30 Jul 2011 16:29:54 +0900
Subject: allow FB to be mapped

This is useful for testing software renderer with FB.
---
 gralloc_drm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gralloc_drm.c b/gralloc_drm.c
index 2ec11ef..0e0943b 100644
--- a/gralloc_drm.c
+++ b/gralloc_drm.c
@@ -300,8 +300,11 @@ int gralloc_drm_bo_lock(struct gralloc_drm_bo_t *bo,
 		int usage, int x, int y, int w, int h,
 		void **addr)
 {
-	if ((bo->handle->usage & usage) != usage)
-		return -EINVAL;
+	if ((bo->handle->usage & usage) != usage) {
+		/* make FB special for testing software renderer with */
+		if (!(bo->handle->usage & GRALLOC_USAGE_HW_FB))
+			return -EINVAL;
+	}
 
 	/* allow multiple locks with compatible usages */
 	if (bo->lock_count && (bo->locked_for & usage) != usage)
-- 
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