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drm: rcar-du: Fix plane state free in plane reset handler 

The plane reset handler frees the plane state and allocates a new
default state, but when doing so attempt to free the plane state using
the base plane state pointer instead of casting it to the
driver-specific state object that has been allocated. Fix it by using
the rcar_du_plane_atomic_destroy_state() function to destroy the plane
state instead of duplicating the code.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Laurent Pinchart 2015-07-27 11:42:54 +03:00
parent f4f0fb7949
commit a32a3c800c
1 changed files with 22 additions and 23 deletions
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45
drivers/gpu/drm/rcar-du/rcar_du_plane.c
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@ -273,29 +273,6 @@ static const struct drm_plane_helper_funcs rcar_du_plane_helper_funcs = {
.atomic_update = rcar_du_plane_atomic_update,
};
static void rcar_du_plane_reset(struct drm_plane *plane)
{
struct rcar_du_plane_state *state;
if (plane->state && plane->state->fb)
drm_framebuffer_unreference(plane->state->fb);
kfree(plane->state);
plane->state = NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL)
return;
state->hwindex = -1;
state->alpha = 255;
state->colorkey = RCAR_DU_COLORKEY_NONE;
state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
plane->state->plane = plane;
}
static struct drm_plane_state *
rcar_du_plane_atomic_duplicate_state(struct drm_plane *plane)
{
@ -322,6 +299,28 @@ static void rcar_du_plane_atomic_destroy_state(struct drm_plane *plane,
kfree(to_rcar_plane_state(state));
}
static void rcar_du_plane_reset(struct drm_plane *plane)
{
struct rcar_du_plane_state *state;
if (plane->state) {
rcar_du_plane_atomic_destroy_state(plane, plane->state);
plane->state = NULL;
}
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL)
return;
state->hwindex = -1;
state->alpha = 255;
state->colorkey = RCAR_DU_COLORKEY_NONE;
state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
plane->state->plane = plane;
}
static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
struct drm_plane_state *state,
struct drm_property *property,