drm/exynos: remove buf_cnt from struct exynos_drm_fb

Looking other drm drivers, there is no the restriction that framebuffer
has only one buffer in .create_handle() callback. They use just first
buffer.

If this limitation is removed, there is no reason keeping buffer count
for framebuffer, so we can remove buf_cnt from struct exynos_drm_fb.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index 5087f60..0842808 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -32,12 +32,10 @@
  * exynos specific framebuffer structure.
  *
  * @fb: drm framebuffer obejct.
- * @buf_cnt: a buffer count to drm framebuffer.
  * @exynos_gem_obj: array of exynos specific gem object containing a gem object.
  */
 struct exynos_drm_fb {
        struct drm_framebuffer          fb;
-       unsigned int                    buf_cnt;
        struct exynos_drm_gem_obj       *exynos_gem_obj[MAX_FB_BUFFER];
 };
 
@@ -97,10 +95,6 @@ static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb,
 {
        struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
 
-       /* 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);
 }
@@ -135,9 +129,6 @@ exynos_drm_framebuffer_init(struct drm_device *dev,
        if (!exynos_fb)
                return ERR_PTR(-ENOMEM);
 
-       exynos_fb->buf_cnt = count;
-       DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt);
-
        for (i = 0; i < count; i++) {
                ret = check_fb_gem_memory_type(dev, gem_obj[i]);
                if (ret < 0)