drm/msm: Delete unnecessary checks before drm_gem_object_unreference_unlocked()

The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
index ba8df15..7b39e89 100644 (file)
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
@@ -168,8 +168,7 @@ static void mdp4_destroy(struct msm_kms *kms)
 
        if (mdp4_kms->blank_cursor_iova)
                msm_gem_put_iova(mdp4_kms->blank_cursor_bo, mdp4_kms->id);
-       if (mdp4_kms->blank_cursor_bo)
-               drm_gem_object_unreference_unlocked(mdp4_kms->blank_cursor_bo);
+       drm_gem_object_unreference_unlocked(mdp4_kms->blank_cursor_bo);
 
        if (mdp4_kms->rpm_enabled)
                pm_runtime_disable(dev);

diff --git a/drivers/gpu/drm/msm/msm_fb.c b/drivers/gpu/drm/msm/msm_fb.c
index 7919c24..95cf8fe 100644 (file)
--- a/drivers/gpu/drm/msm/msm_fb.c
+++ b/drivers/gpu/drm/msm/msm_fb.c
@@ -49,8 +49,8 @@ static void msm_framebuffer_destroy(struct drm_framebuffer *fb)
 
        for (i = 0; i < n; i++) {
                struct drm_gem_object *bo = msm_fb->planes[i];
-               if (bo)
-                       drm_gem_object_unreference_unlocked(bo);
+
+               drm_gem_object_unreference_unlocked(bo);
        }
 
        kfree(msm_fb);

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 886cfe0..9a713fb 100644 (file)
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -875,8 +875,6 @@ struct drm_gem_object *msm_gem_import(struct drm_device *dev,
        return obj;
 
 fail:
-       if (obj)
-               drm_gem_object_unreference_unlocked(obj);
-
+       drm_gem_object_unreference_unlocked(obj);
        return ERR_PTR(ret);
 }