[PATCH drm-misc-next v4 3/4] drm/arm/hdlcd: plane: use drm managed resources

From: Danilo Krummrich
Date: Wed Oct 26 2022 - 11:35:06 EST


Use drm managed resource allocation (drmm_universal_plane_alloc()) in
order to get rid of the explicit destroy hook in struct drm_plane_funcs.

Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
---
drivers/gpu/drm/arm/hdlcd_crtc.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c
index 2055b1abcec3..1de0f7b23766 100644
--- a/drivers/gpu/drm/arm/hdlcd_crtc.c
+++ b/drivers/gpu/drm/arm/hdlcd_crtc.c
@@ -290,7 +290,6 @@ static const struct drm_plane_helper_funcs hdlcd_plane_helper_funcs = {
static const struct drm_plane_funcs hdlcd_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
- .destroy = drm_plane_cleanup,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
@@ -301,21 +300,16 @@ static struct drm_plane *hdlcd_plane_init(struct drm_device *drm)
struct hdlcd_drm_private *hdlcd = drm_to_hdlcd_priv(drm);
struct drm_plane *plane = NULL;
u32 formats[ARRAY_SIZE(supported_formats)], i;
- int ret;
-
- plane = devm_kzalloc(drm->dev, sizeof(*plane), GFP_KERNEL);
- if (!plane)
- return ERR_PTR(-ENOMEM);

for (i = 0; i < ARRAY_SIZE(supported_formats); i++)
formats[i] = supported_formats[i].fourcc;

- ret = drm_universal_plane_init(drm, plane, 0xff, &hdlcd_plane_funcs,
- formats, ARRAY_SIZE(formats),
- NULL,
- DRM_PLANE_TYPE_PRIMARY, NULL);
- if (ret)
- return ERR_PTR(ret);
+ plane = drmm_universal_plane_alloc(drm, struct drm_plane, dev, 0xff,
+ &hdlcd_plane_funcs,
+ formats, ARRAY_SIZE(formats),
+ NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+ if (IS_ERR(plane))
+ return plane;

drm_plane_helper_add(plane, &hdlcd_plane_helper_funcs);
hdlcd->plane = plane;
--
2.37.3