[RFC 1/2] drm: add devm release action

[Aravind Iddamsetty <aravind.iddamsetty@linux.intel.com>]

In scenarios where drm_dev_put is directly called by driver we want to
release devm_drm_dev_init_release action associated with struct
drm_device.

Cc: Thomas Hellstr_m <thomas.hellstrom@linux.intel.com>

Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@linux.intel.com>
---
 drivers/gpu/drm/drm_drv.c | 6 ++++++
 include/drm/drm_drv.h     | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 243cacb3575c..b23c5081812b 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -714,6 +714,12 @@ static int devm_drm_dev_init(struct device *parent,
 					devm_drm_dev_init_release, dev);
 }
 
+void __devm_drm_dev_release_action(struct drm_device *dev)
+{
+	devm_release_action(dev->dev, devm_drm_dev_init_release, dev);
+}
+EXPORT_SYMBOL(__devm_drm_dev_release_action);
+
 void *__devm_drm_dev_alloc(struct device *parent,
 			   const struct drm_driver *driver,
 			   size_t size, size_t offset)
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index 8878260d7529..a1d12cb72088 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -444,6 +444,8 @@ struct drm_driver {
 	const struct file_operations *fops;
 };
 
+void __devm_drm_dev_release_action(struct drm_device *dev);
+
 void *__devm_drm_dev_alloc(struct device *parent,
 			   const struct drm_driver *driver,
 			   size_t size, size_t offset);
@@ -477,6 +479,8 @@ void *__devm_drm_dev_alloc(struct device *parent,
 #define devm_drm_dev_alloc(parent, driver, type, member) \
 	((type *) __devm_drm_dev_alloc(parent, driver, sizeof(type), \
 				       offsetof(type, member)))
+#define devm_drm_release_action(drm_dev) \
+	__devm_drm_dev_release_action(drm_dev)
 
 struct drm_device *drm_dev_alloc(const struct drm_driver *driver,
 				 struct device *parent);
-- 
2.25.1