GETFB ioctl request creates a new handle to only one gem object
so it should check if the given fb has one gem object.
Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_fb.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c
b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index 294c051..b751c8a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -99,6 +99,10 @@ static int exynos_drm_fb_create_handle(struct
drm_framebuffer *fb,
DRM_DEBUG_KMS("%s\n", __FILE__);
+ /* This fb should have only one gem object. */
+ if (WARN_ON(exynos_fb->buf_cnt != 1))
+ return -EINVAL;
+
return drm_gem_handle_create(file_priv,
&exynos_fb->exynos_gem_obj[0]->base, handle);
}
--
1.7.4.1
