devm_kcalloc() is the wrong API to allocate planes, as the lifetime of
the planes is tied to the DRM device, not the device to driver
binding. drmm_kcalloc() isn't a good option either, as it would result
in the planes being freed before being unregistered during the managed
cleanup of the DRM objects. Use a plain kcalloc(), and cleanup the
planes and free the memory in the existing rcar_du_vsp_cleanup()
handler.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index 4dcb1bfbe201..78a886651d9f 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -21,6 +21,7 @@
#include <linux/dma-mapping.h>
#include <linux/of_platform.h>
#include <linux/scatterlist.h>
+#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/vsp1.h>
@@ -344,6 +345,15 @@ static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
static void rcar_du_vsp_cleanup(struct drm_device *dev, void *res)
{
struct rcar_du_vsp *vsp = res;
+ unsigned int i;
+
+ for (i = 0; i < vsp->num_planes; ++i) {
+ struct rcar_du_vsp_plane *plane = &vsp->planes[i];
+
+ drm_plane_cleanup(&plane->plane);
+ }
+
+ kfree(vsp->planes);
put_device(vsp->vsp);
}
@@ -354,6 +364,7 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
struct rcar_du_device *rcdu = vsp->dev;
struct platform_device *pdev;
unsigned int num_crtcs = hweight32(crtcs);
+ unsigned int num_planes;
unsigned int i;
int ret;
@@ -376,14 +387,13 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
* The VSP2D (Gen3) has 5 RPFs, but the VSP1D (Gen2) is limited to
* 4 RPFs.
*/
- vsp->num_planes = rcdu->info->gen >= 3 ? 5 : 4;
+ num_planes = rcdu->info->gen >= 3 ? 5 : 4;
- vsp->planes = devm_kcalloc(rcdu->dev, vsp->num_planes,
- sizeof(*vsp->planes), GFP_KERNEL);
+ vsp->planes = kcalloc(num_planes, sizeof(*vsp->planes), GFP_KERNEL);
if (!vsp->planes)
return -ENOMEM;
- for (i = 0; i < vsp->num_planes; ++i) {
+ for (i = 0; i < num_planes; ++i) {
enum drm_plane_type type = i < num_crtcs
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY;
@@ -409,8 +419,10 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
} else {
drm_plane_create_alpha_property(&plane->plane);
drm_plane_create_zpos_property(&plane->plane, 1, 1,
- vsp->num_planes - 1);
+ num_planes - 1);
}
+
+ vsp->num_planes++;
}
return 0;
--
Regards,
Laurent Pinchart
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