drm/amdgpu: Delete an unnecessary check before two function calls

Submitted by Markus Elfring on Sept. 4, 2019, 11 a.m.

Details

Message ID a3739125-5fa8-cadb-d2b8-8a9f12e9bacd@web.de
State New
Headers show
Series "drm/amdgpu: Delete an unnecessary check before two function calls" ( rev: 1 ) in AMD X.Org drivers

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Commit Message

Markus Elfring Sept. 4, 2019, 11 a.m.
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 4 Sep 2019 12:30:23 +0200

The functions “debugfs_remove” and “kfree” test whether their argument
is NULL and then return immediately.
Thus the tests around the shown calls are not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

--
2.23.0

Patch hide | download patch | download mbox

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 5652cc72ed3a..d321c72d63d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1076,10 +1076,7 @@  static int amdgpu_debugfs_ib_preempt(void *data, u64 val)
 	kthread_unpark(ring->sched.thread);

 	ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
-
-	if (fences)
-		kfree(fences);
-
+	kfree(fences);
 	return 0;
 }

@@ -1103,8 +1100,7 @@  int amdgpu_debugfs_init(struct amdgpu_device *adev)

 void amdgpu_debugfs_preempt_cleanup(struct amdgpu_device *adev)
 {
-	if (adev->debugfs_preempt)
-		debugfs_remove(adev->debugfs_preempt);
+	debugfs_remove(adev->debugfs_preempt);
 }

 #else

Comments

> The functions “debugfs_remove” and “kfree” test whether their argument
> is NULL and then return immediately.
> Thus the tests around the shown calls are not needed.
>
> This issue was detected by using the Coccinelle software.

I suggest to take another look at a similar patch.

drm/amdgpu: remove the redundant null check
https://lkml.org/lkml/2019/9/3/59
https://lore.kernel.org/patchwork/patch/1123118/
https://lore.kernel.org/r/1567491305-18320-1-git-send-email-zhongjiang@huawei.com/

Regards,
Markus