From: Markus Elfring elfring@users.sourceforge.net Date: Wed, 13 Jul 2016 19:15:35 +0200
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 --- drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 3 +-- drivers/gpu/drm/msm/msm_fb.c | 4 ++-- drivers/gpu/drm/msm/msm_gem.c | 4 +--- 3 files changed, 4 insertions(+), 7 deletions(-)
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 --- 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 --- 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 --- 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); }