From: Zou Wei <zou_wei@huawei.com>
To: <robh@kernel.org>, <tomeu.vizoso@collabora.com>,
<airlied@linux.ie>, <daniel@ffwll.ch>, <steven.price@arm.com>,
<alyssa.rosenzweig@collabora.com>
Cc: <dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
Zou Wei <zou_wei@huawei.com>
Subject: [PATCH -next] drm/panfrost: Fix PM reference leak in panfrost_job_hw_submit()
Date: Tue, 11 May 2021 14:29:11 +0800 [thread overview]
Message-ID: <1620714551-106976-1-git-send-email-zou_wei@huawei.com> (raw)
pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
---
drivers/gpu/drm/panfrost/panfrost_job.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 6003cfe..42d8dbc 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -157,7 +157,7 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
panfrost_devfreq_record_busy(&pfdev->pfdevfreq);
- ret = pm_runtime_get_sync(pfdev->dev);
+ ret = pm_runtime_resume_and_get(pfdev->dev);
if (ret < 0)
return;
--
2.6.2
next reply other threads:[~2021-05-11 6:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 6:29 Zou Wei [this message]
2021-05-12 15:23 ` [PATCH -next] drm/panfrost: Fix PM reference leak in panfrost_job_hw_submit() Steven Price
2021-05-13 2:07 ` Samuel Zou
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