linux-kernel - Re: [PATCH] drm/tidss: Set max DMA segment size

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Message-ID: <a00527f5-8e76-958d-8d12-c2b815a200d7@ideasonboard.com>
Date:   Fri, 16 Dec 2022 10:17:08 +0200
From:   Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To:     Andrew Davis <afd@...com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jyri Sarha <jyri.sarha@....fi>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/tidss: Set max DMA segment size

On 23/08/2022 03:16, Andrew Davis wrote:
> We have no segment size limitations. Set to unlimited.
> 
> Signed-off-by: Andrew Davis <afd@...com>
> ---
>   drivers/gpu/drm/tidss/tidss_dispc.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c
> index dd3c6a606ae2..624545e4636c 100644
> --- a/drivers/gpu/drm/tidss/tidss_dispc.c
> +++ b/drivers/gpu/drm/tidss/tidss_dispc.c
> @@ -2685,6 +2685,7 @@ int dispc_init(struct tidss_device *tidss)
>   		if (r)
>   			dev_warn(dev, "cannot set DMA masks to 48-bit\n");
>   	}
> +	dma_set_max_seg_size(dev, UINT_MAX);
>   
>   	dispc = devm_kzalloc(dev, sizeof(*dispc), GFP_KERNEL);
>   	if (!dispc)

Thanks, I'll apply to drm-misc.

  Tomi