virgl: constify virgl_cbs

Also rename it to vrend_cbs.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>

src/virglrenderer.c

@@ -370,8 +370,6 @@ static struct virgl_renderer_callbacks *rcbs;
 
 static void *dev_cookie;
 
-static struct vrend_if_cbs virgl_cbs;
-
 static void virgl_write_fence(uint32_t fence_id)
 {
    rcbs->write_fence(dev_cookie, fence_id);
@@ -409,7 +407,7 @@ static int make_current(virgl_renderer_gl_context ctx)
    return rcbs->make_current(dev_cookie, 0, ctx);
 }
 
-static struct vrend_if_cbs virgl_cbs = {
+static const struct vrend_if_cbs vrend_cbs = {
    virgl_write_fence,
    create_gl_context,
    destroy_gl_context,
@@ -472,7 +470,7 @@ int virgl_renderer_init(void *cookie, int flags, struct virgl_renderer_callbacks
    if (flags & VIRGL_RENDERER_USE_EXTERNAL_BLOB)
       renderer_flags |= VREND_USE_EXTERNAL_BLOB;
 
-   return vrend_renderer_init(&virgl_cbs, renderer_flags);
+   return vrend_renderer_init(&vrend_cbs, renderer_flags);
 }
 
 int virgl_renderer_get_fd_for_texture(uint32_t tex_id, int *fd)

src/vrend_renderer.c

@@ -63,7 +63,7 @@
 
 static const uint32_t fake_occlusion_query_samples_passed_default = 1024;
 
-struct vrend_if_cbs *vrend_clicbs;
+const struct vrend_if_cbs *vrend_clicbs;
 
 struct vrend_fence {
    uint32_t fence_id;
@@ -5931,7 +5931,7 @@ static bool use_integer() {
    return false;
 }
 
-int vrend_renderer_init(struct vrend_if_cbs *cbs, uint32_t flags)
+int vrend_renderer_init(const struct vrend_if_cbs *cbs, uint32_t flags)
 {
    bool gles;
    int gl_ver;

src/vrend_renderer.h

@@ -122,7 +122,7 @@ struct vrend_if_cbs {
 #define VREND_USE_THREAD_SYNC 1
 #define VREND_USE_EXTERNAL_BLOB 2
 
-int vrend_renderer_init(struct vrend_if_cbs *cbs, uint32_t flags);
+int vrend_renderer_init(const struct vrend_if_cbs *cbs, uint32_t flags);
 
 void vrend_insert_format(struct vrend_format_table *entry, uint32_t bindings, uint32_t flags);
 bool vrend_check_framebuffer_mixed_color_attachements(void);
@@ -476,7 +476,7 @@ struct gl_version {
 static const struct gl_version gl_versions[] = { {4,6}, {4,5}, {4,4}, {4,3}, {4,2}, {4,1}, {4,0},
                                                  {3,3}, {3,2}, {3,1}, {3,0} };
 
-extern struct vrend_if_cbs *vrend_clicbs;
+extern const struct vrend_if_cbs *vrend_clicbs;
 
 int vrend_renderer_export_query(struct pipe_resource *pres,
                                 struct virgl_renderer_export_query *export_query);