[PATCH] drm/panfrost: Remove opp table when unloading

[Steven Price]

The devfreq opp table needs to be removed when unloading the driver to
free the memory associated with it.

Signed-off-by: Steven Price <steven.pr...@arm.com>
---
 drivers/gpu/drm/panfrost/panfrost_devfreq.c | 6 ++++++
 drivers/gpu/drm/panfrost/panfrost_devfreq.h | 1 +
 drivers/gpu/drm/panfrost/panfrost_drv.c     | 5 ++++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c 
b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 77e1ad24de53..710d903f8e0d 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -160,12 +160,18 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
                DRM_DEV_ERROR(&pfdev->pdev->dev, "Couldn't initialize GPU 
devfreq\n");
                ret = PTR_ERR(pfdev->devfreq.devfreq);
                pfdev->devfreq.devfreq = NULL;
+               dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
                return ret;
        }
 
        return 0;
 }
 
+void panfrost_devfreq_fini(struct panfrost_device *pfdev)
+{
+       dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
+}
+
 void panfrost_devfreq_resume(struct panfrost_device *pfdev)
 {
        int i;
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h 
b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index eb999531ed90..e3bc63e82843 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -5,6 +5,7 @@
 #define __PANFROST_DEVFREQ_H__
 
 int panfrost_devfreq_init(struct panfrost_device *pfdev);
+void panfrost_devfreq_fini(struct panfrost_device *pfdev);
 
 void panfrost_devfreq_resume(struct panfrost_device *pfdev);
 void panfrost_devfreq_suspend(struct panfrost_device *pfdev);
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c 
b/drivers/gpu/drm/panfrost/panfrost_drv.c
index ae70200be44a..44a558c6e17e 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -547,12 +547,14 @@ static int panfrost_probe(struct platform_device *pdev)
         */
        err = drm_dev_register(ddev, 0);
        if (err < 0)
-               goto err_out1;
+               goto err_out2;
 
        panfrost_gem_shrinker_init(ddev);
 
        return 0;
 
+err_out2:
+       panfrost_devfreq_fini(pfdev);
 err_out1:
        panfrost_device_fini(pfdev);
 err_out0:
@@ -571,6 +573,7 @@ static int panfrost_remove(struct platform_device *pdev)
        pm_runtime_get_sync(pfdev->dev);
        pm_runtime_put_sync_autosuspend(pfdev->dev);
        pm_runtime_disable(pfdev->dev);
+       panfrost_devfreq_fini(pfdev);
        panfrost_device_fini(pfdev);
        drm_dev_put(ddev);
        return 0;
-- 
2.20.1