The array of formats passed to drm_universal_plane_init() doesn't need to outlive the function call, as it's copied internally. Use kcalloc() instead of drmm_kcalloc() to allocate it, and free it right after usage.
While at it, move the allocation and initialization of the formats array to a separate function, to prepare for splitting the DRM plane handling to a separate file.
Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/xlnx/zynqmp_disp.c | 45 ++++++++++++++++++++++-------- 1 file changed, 34 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c index 4767d3a7929a..b88efb6407a7 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c @@ -999,6 +999,33 @@ zynqmp_disp_layer_find_format(struct zynqmp_disp_layer *layer, return NULL; }
+/** + * zynqmp_disp_layer_drm_formats - Return the DRM formats supported by the layer + * @layer: The layer + * @num_formats: Pointer to the returned number of formats + * + * Return: A newly allocated u32 array that stores all the DRM formats + * supported by the layer. The number of formats in the array is returned + * through the num_formats argument. + */ +static u32 *zynqmp_disp_layer_drm_formats(struct zynqmp_disp_layer *layer, + unsigned int *num_formats) +{ + unsigned int i; + u32 *formats; + + formats = kcalloc(layer->info->num_formats, sizeof(*formats), + GFP_KERNEL); + if (!formats) + return NULL; + + for (i = 0; i < layer->info->num_formats; ++i) + formats[i] = layer->info->formats[i].drm_fmt; + + *num_formats = layer->info->num_formats; + return formats; +} + /** * zynqmp_disp_layer_enable - Enable a layer * @layer: The layer @@ -1214,31 +1241,27 @@ static const struct drm_plane_funcs zynqmp_disp_plane_funcs = {
static int zynqmp_disp_create_planes(struct zynqmp_disp *disp) { - unsigned int i, j; + unsigned int i; int ret;
for (i = 0; i < ARRAY_SIZE(disp->layers); i++) { struct zynqmp_disp_layer *layer = &disp->layers[i]; enum drm_plane_type type; - u32 *drm_formats; + unsigned int num_formats; + u32 *formats;
- drm_formats = drmm_kcalloc(disp->drm, sizeof(*drm_formats), - layer->info->num_formats, - GFP_KERNEL); - if (!drm_formats) + formats = zynqmp_disp_layer_drm_formats(layer, &num_formats); + if (!formats) return -ENOMEM;
- for (j = 0; j < layer->info->num_formats; ++j) - drm_formats[j] = layer->info->formats[j].drm_fmt; - /* Graphics layer is primary, and video layer is overlay. */ type = zynqmp_disp_layer_is_video(layer) ? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY; ret = drm_universal_plane_init(disp->drm, &layer->plane, 0, &zynqmp_disp_plane_funcs, - drm_formats, - layer->info->num_formats, + formats, num_formats, NULL, type, NULL); + kfree(formats); if (ret) return ret;