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Subject[PATCH] drm/panfrost: fix ref count leak in panfrost_job_hw_submit
Date
in panfrost_job_hw_submit, pm_runtime_get_sync is called which
increments the counter even in case of failure, leading to incorrect
ref count. In case of failure, decrement the ref count before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
drivers/gpu/drm/panfrost/panfrost_job.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 7914b1570841..89ac84667eb1 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -147,11 +147,10 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js)

ret = pm_runtime_get_sync(pfdev->dev);
if (ret < 0)
- return;
+ goto out;

if (WARN_ON(job_read(pfdev, JS_COMMAND_NEXT(js)))) {
- pm_runtime_put_sync_autosuspend(pfdev->dev);
- return;
+ goto out;
}

cfg = panfrost_mmu_as_get(pfdev, &job->file_priv->mmu);
@@ -184,6 +183,9 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
job, js, jc_head);

job_write(pfdev, JS_COMMAND_NEXT(js), JS_COMMAND_START);
+out:
+ pm_runtime_put_sync_autosuspend(pfdev->dev);
+ return;
}

static void panfrost_acquire_object_fences(struct drm_gem_object **bos,
--
2.17.1
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