On Fri, Apr 30, 2021 at 02:40:02PM +0000, Simon Ser wrote:
> Let the user know what went wrong in drm_gem_fb_init_with_funcs
> failure paths.
>
> Signed-off-by: Simon Ser <contact@xxxxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Cc: Noralf Trønnes <noralf@xxxxxxxxxxx>
> Cc: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_gem_framebuffer_helper.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> index 109d11fb4cd4..e4a3c7eb43b2 100644
> --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> @@ -155,8 +155,10 @@ int drm_gem_fb_init_with_funcs(struct drm_device *dev,
> int ret, i;
>
> info = drm_get_format_info(dev, mode_cmd);
> - if (!info)
> + if (!info) {
> + drm_dbg_kms(dev, "Failed to get FB format info\n");
> return -EINVAL;
> + }
Assuming this thing gets plugged into .fb_create() getting
this far with a bogus format would be rather suprising.
>
> for (i = 0; i < info->num_planes; i++) {
> unsigned int width = mode_cmd->width / (i ? info->hsub : 1);
> @@ -175,6 +177,9 @@ int drm_gem_fb_init_with_funcs(struct drm_device *dev,
> + mode_cmd->offsets[i];
>
> if (objs[i]->size < min_size) {
> + drm_dbg_kms(dev,
> + "GEM object size (%u) smaller than minimum size (%u) for plane %d\n",
> + objs[i]->size, min_size, i);
> drm_gem_object_put(objs[i]);
> ret = -EINVAL;
> goto err_gem_object_put;
> --
> 2.31.1
>
>
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> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Ville Syrjälä
Intel
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