From: SF Markus Elfring <elfring@users.sourceforge.net>
To: David Airlie <airlied@linux.ie>, Rob Clark <robdclark@gmail.com>,
dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
linux-arm-msm@vger.kernel.org
Cc: Julia Lawall <julia.lawall@lip6.fr>,
kernel-janitors@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 2/3] drm/msm: Delete unnecessary checks before drm_gem_object_unreference_unlocked()
Date: Wed, 13 Jul 2016 20:01:27 +0200 [thread overview]
Message-ID: <9120ad90-45d1-1c01-fc84-65c431b5ca4f@users.sourceforge.net> (raw)
In-Reply-To: <351a1279-b0ca-5f5e-d175-28c9de8406f6@users.sourceforge.net>
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);
}
--
2.9.0
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next prev parent reply other threads:[~2016-07-13 18:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5307CAA2.8060406@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402212321410.2043@localhost6.localdomain6>
[not found] ` <530A086E.8010901@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402231635510.1985@localhost6.localdomain6>
[not found] ` <530A72AA.3000601@users.sourceforge.net>
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[not found] ` <530B5FB6.6010207@users.sourceforge.net>
[not found] ` <alpine.DEB.2.10.1402241710370.2074@hadrien>
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[not found] ` <alpine.DEB.2.10.1402251014170.2080@hadrien>
[not found] ` <530CD2C4.4050903@users.sourceforge.net>
[not found] ` <alpine.DEB.2.10.1402251840450.7035@hadrien>
[not found] ` <530CF8FF.8080600@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402252117150.2047@localhost6.localdomain6>
[not found] ` <530DD06F.4090703@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402262129250.2221@localhost6.localdomain6>
[not found] ` <5317A59D.4@users.sourceforge.net>
2016-07-13 17:54 ` [PATCH 0/3] drm/msm: Deletion of a few unnecessary checks SF Markus Elfring
2016-07-13 18:00 ` [PATCH 1/3] drm/msm/hdmi: Delete an unnecessary check before the function call "kfree" SF Markus Elfring
2016-07-13 18:01 ` SF Markus Elfring [this message]
2016-07-13 18:02 ` [PATCH 3/3] drm/msm: Delete an unnecessary check before drm_gem_object_unreference() SF Markus Elfring
2016-07-15 2:08 ` [PATCH 0/3] drm/msm: Deletion of a few unnecessary checks Rob Clark
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