| Message ID | 20220211130434.20732-3-noralf@tronnes.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/panel: Add MIPI DBI compatible SPI driver | expand |
On Fri, Feb 11, 2022 at 02:04:33PM +0100, Noralf Trønnes wrote: > 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@tronnes.org> Acked-by: Maxime Ripard <maxime@cerno.tech> Maxime
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)
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@tronnes.org> --- include/drm/drm_mipi_dbi.h | 8 ++++++++ 1 file changed, 8 insertions(+)