devm_drm_dev_alloc() can't allocate structures that embed a structure
which then again embeds drm_device. Workaround this by adding a
driver_private pointer to struct mipi_dbi_dev which the driver can use for
its additional state.
v3:
- Add documentation
Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
---
include/drm/drm_mipi_dbi.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/drm/drm_mipi_dbi.h b/include/drm/drm_mipi_dbi.h
index 6fe13cce2670..dad2f187b64b 100644
--- a/include/drm/drm_mipi_dbi.h
+++ b/include/drm/drm_mipi_dbi.h
@@ -130,6 +130,14 @@ struct mipi_dbi_dev {
* @dbi: MIPI DBI interface
*/
struct mipi_dbi dbi;
+
+ /**
+ * @driver_private: Driver private data.
+ * Necessary for drivers with private data since devm_drm_dev_alloc()
+ * can't allocate structures that embed a structure which then again
+ * embeds drm_device.
+ */
+ void *driver_private;
};
static inline struct mipi_dbi_dev *drm_to_mipi_dbi_dev(struct drm_device *drm)
--
2.33.0
