drm/exynos: add exception codes to exynos_drm_fbdev_create()

This patch releases allocated resources correctly.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 17 insertions, 7 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index a2232792e0c0..885ef235d59c 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -164,7 +164,7 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
         exynos_gem_obj = exynos_drm_gem_create(dev, 0, size);
         if (IS_ERR(exynos_gem_obj)) {
                 ret = PTR_ERR(exynos_gem_obj);
-                goto out;
+                goto err_release_framebuffer;
         }
 
         exynos_fbdev->exynos_gem_obj = exynos_gem_obj;
@@ -174,7 +174,7 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
         if (IS_ERR_OR_NULL(helper->fb)) {
                 DRM_ERROR("failed to create drm framebuffer.\n");
                 ret = PTR_ERR(helper->fb);
-                goto out;
+                goto err_destroy_gem;
         }
 
         helper->fbdev = fbi;
@@ -186,14 +186,24 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
         ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
         if (ret) {
                 DRM_ERROR("failed to allocate cmap.\n");
-                goto out;
+                goto err_destroy_framebuffer;
         }
 
         ret = exynos_drm_fbdev_update(helper, helper->fb);
-        if (ret < 0) {
-                fb_dealloc_cmap(&fbi->cmap);
-                goto out;
-        }
+        if (ret < 0)
+                goto err_dealloc_cmap;
+
+        mutex_unlock(&dev->struct_mutex);
+        return ret;
+
+err_dealloc_cmap:
+        fb_dealloc_cmap(&fbi->cmap);
+err_destroy_framebuffer:
+        drm_framebuffer_cleanup(helper->fb);
+err_destroy_gem:
+        exynos_drm_gem_destroy(exynos_gem_obj);
+err_release_framebuffer:
+        framebuffer_release(fbi);
 
 /*
  * if failed, all resources allocated above would be released by