[PATCH] drm/cirrus drm/virtio: add create_handle support.

[Lepton Wu]

Add create_handle support to cirrus and virtio fb which are used
in virtual machines. Without this, screenshot tool in chromium OS
can't work.

Signed-off-by: Lepton Wu <ytht.net at gmail.com>
---
 drivers/gpu/drm/cirrus/cirrus_main.c     |  9 +++++++++
 drivers/gpu/drm/virtio/virtgpu_display.c | 12 ++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/cirrus/cirrus_main.c b/drivers/gpu/drm/cirrus/cirrus_main.c
index b5f528543956..26df1e8cd490 100644
--- a/drivers/gpu/drm/cirrus/cirrus_main.c
+++ b/drivers/gpu/drm/cirrus/cirrus_main.c
@@ -13,6 +13,14 @@
 
 #include "cirrus_drv.h"
 
+static int cirrus_create_handle(struct drm_framebuffer *fb,
+				struct drm_file* file_priv,
+				unsigned int* handle)
+{
+	struct cirrus_framebuffer *cirrus_fb = to_cirrus_framebuffer(fb);
+
+	return drm_gem_handle_create(file_priv, cirrus_fb->obj, handle);
+}
 
 static void cirrus_user_framebuffer_destroy(struct drm_framebuffer *fb)
 {
@@ -24,6 +32,7 @@ static void cirrus_user_framebuffer_destroy(struct drm_framebuffer *fb)
 }
 
 static const struct drm_framebuffer_funcs cirrus_fb_funcs = {
+	.create_handle = cirrus_create_handle,
 	.destroy = cirrus_user_framebuffer_destroy,
 };
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index b6d52055a11f..274b4206ca96 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -71,7 +71,19 @@ virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
 	return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
 }
 
+static int
+virtio_gpu_framebuffer_create_handle(struct drm_framebuffer *fb,
+				     struct drm_file *file_priv,
+				     unsigned int *handle)
+{
+	struct virtio_gpu_framebuffer *virtio_gpu_fb =
+		to_virtio_gpu_framebuffer(fb);
+
+	return drm_gem_handle_create(file_priv, virtio_gpu_fb->obj, handle);
+}
+
 static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
+	.create_handle = virtio_gpu_framebuffer_create_handle,
 	.destroy = virtio_gpu_user_framebuffer_destroy,
 	.dirty = virtio_gpu_framebuffer_surface_dirty,
 };
-- 
2.15.0.403.gc27cc4dac6-goog