[Lima] [PATCH] drm/lima: fix warning when CONFIG_DEBUG_SG=y & CONFIG_DMA_API_DEBUG=y

[Vasily Khoruzhick]

On Sat, Oct 30, 2021 at 9:16 PM Qiang Yu <yuq825 at gmail.com> wrote:
>
> Otherwise get following warning:
>
> DMA-API: lima 1c40000.gpu: mapping sg segment longer than device claims to support [len=4149248] [max=65536]
>
> See: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5496
>
> Reported-by: Roman Stratiienko <r.stratiienko at gmail.com>

Reviewed-by: Vasily Khoruzhick <anarsoul at gmail.com>

> Signed-off-by: Qiang Yu <yuq825 at gmail.com>
> ---
>  drivers/gpu/drm/lima/lima_device.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/lima/lima_device.c b/drivers/gpu/drm/lima/lima_device.c
> index 65fdca366e41..36c990589427 100644
> --- a/drivers/gpu/drm/lima/lima_device.c
> +++ b/drivers/gpu/drm/lima/lima_device.c
> @@ -357,6 +357,7 @@ int lima_device_init(struct lima_device *ldev)
>         int err, i;
>
>         dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32));
> +       dma_set_max_seg_size(ldev->dev, UINT_MAX);
>
>         err = lima_clk_init(ldev);
>         if (err)
> --
> 2.25.1
>