On 1/9/25 17:57, Thomas Zimmermann wrote:
> Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and
> buffer size. Align the pitch to a multiple of 4.
>
> Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
> Cc: David Airlie <airl...@redhat.com>
> Cc: Gerd Hoffmann <kra...@redhat.com>
> Cc: Gurchetan Singh <gurchetansi...@chromium.org>
> Cc: Chia-I Wu <olva...@gmail.com>
> ---
> drivers/gpu/drm/virtio/virtgpu_gem.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c
> b/drivers/gpu/drm/virtio/virtgpu_gem.c
> index 5aab588fc400..22cf1cd2fdfd 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_gem.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
> @@ -23,6 +23,7 @@
> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
> */
>
> +#include <drm/drm_dumb_buffers.h>
> #include <drm/drm_file.h>
> #include <drm/drm_fourcc.h>
>
> @@ -66,15 +67,14 @@ int virtio_gpu_mode_dumb_create(struct drm_file
> *file_priv,
> struct virtio_gpu_object_params params = { 0 };
> struct virtio_gpu_device *vgdev = dev->dev_private;
> int ret;
> - uint32_t pitch;
> +
> + ret = drm_mode_size_dumb(dev, args, SZ_4, 0);
Nit: I'd keep using PAGE_SIZE instead of 0 for more clarity, but that's
an optional wish.
> + if (ret)
> + return ret;
>
> if (args->bpp != 32)
> return -EINVAL;
>
> - pitch = args->width * 4;
> - args->size = pitch * args->height;
> - args->size = ALIGN(args->size, PAGE_SIZE);
> -
> params.format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888);
> params.width = args->width;
> params.height = args->height;
> @@ -92,7 +92,6 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
> if (ret)
> goto fail;
>
> - args->pitch = pitch;
> return ret;
>
> fail:
Reviewed-by: Dmitry Osipenko <dmitry.osipe...@collabora.com>
--
Best regards,
Dmitry
