[PATCH v2] drm: log errors in drm_gem_fb_init_with_funcs
Rodrigo Siqueira
Rodrigo.Siqueira at amd.com
Mon May 3 14:20:38 UTC 2021
On 05/03, Simon Ser wrote:
> Let the user know what went wrong in drm_gem_fb_init_with_funcs
> failure paths.
>
> v2: use proper format specifier for size_t (kernel test robot)
>
> Signed-off-by: Simon Ser <contact at emersion.fr>
> Reviewed-by: Michel Dänzer <mdaenzer at redhat.com>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Sam Ravnborg <sam at ravnborg.org>
> Cc: Noralf Trønnes <noralf at tronnes.org>
> Cc: Andrzej Pietrasiewicz <andrzej.p at collabora.com>
> ---
> 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..aeb808a0ba54 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");
Just for curiosity,
Why not say something like "FB format is not supported" by the driver?
I'm asking because the kernel-doc for drm_get_format_info says "NULL if
the format is unsupported".
Thanks
Siqueira
> return -EINVAL;
> + }
>
> 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 (%zu) 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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--
Rodrigo Siqueira
https://siqueira.tech
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