drm/rockchip: fix compile error when build as modules

Build fail with:
  ERROR: "memblock_free" [drivers/gpu/drm/rockchip/rockchipdrm.ko] undefined!

memblok_free fuction not export symbol, and use the flag __init, so it
can't be used on modules.

the memblock_free function only used for loader memory manager, not use
on modules context, so just use it when build-in drm/rockchip.

Change-Id: Ib88b6ca6c61f7ef85b4126d705a4911e207b57e5
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index 11df99a470794cdaec2f6fc904407b17e6559273..afe6f6ccffd444d5b41b124a1c4deb7c64046212 100644 (file)
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -58,6 +58,7 @@ static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
                        drm_gem_object_unreference_unlocked(obj);
        }
 
+#ifndef MODULE
        if (rockchip_fb->sgt) {
                void *start = phys_to_virt(rockchip_fb->start);
                void *end = phys_to_virt(rockchip_fb->size);
@@ -68,6 +69,9 @@ static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
                memblock_free(rockchip_fb->start, rockchip_fb->size);
                free_reserved_area(start, end, -1, "drm_fb");
        }
+#else
+       WARN_ON(rockchip_fb->sgt);
+#endif
 
        drm_framebuffer_cleanup(fb);
        kfree(rockchip_fb);
@@ -120,6 +124,7 @@ rockchip_fb_alloc(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd,
                        rk_obj = to_rockchip_obj(obj[i]);
                        rockchip_fb->dma_addr[i] = rk_obj->dma_addr;
                }
+#ifndef MODULE
        } else if (res) {
                unsigned long nr_pages;
                struct page **pages;
@@ -155,6 +160,7 @@ rockchip_fb_alloc(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd,
                rockchip_fb->sgt = sgt;
                rockchip_fb->start = res->start;
                rockchip_fb->size = size;
+#endif
        } else {
                ret = -EINVAL;
                dev_err(dev->dev, "Failed to find available buffer\n");