linux-kernel - Re: [PATCH v3 3/3] drm/panfrost: Add initial panfrost driver

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Message-ID: <87sguqdg2y.fsf@anholt.net>
Date:   Tue, 09 Apr 2019 14:27:49 -0700
From:   Eric Anholt <eric@...olt.net>
To:     Rob Herring <robh@...nel.org>, dri-devel@...ts.freedesktop.org
Cc:     linux-kernel@...r.kernel.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Lyude Paul <lyude@...hat.com>,
        "Marty E . Plummer" <hanetzer@...rtmail.com>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>
Subject: Re: [PATCH v3 3/3] drm/panfrost: Add initial panfrost driver

Eric Anholt <eric@...olt.net> writes:

> [ Unknown signature status ]
> Rob Herring <robh@...nel.org> writes:
>
>> This adds the initial driver for panfrost which supports Arm Mali
>> Midgard and Bifrost family of GPUs. Currently, only the T860 and
>> T760 Midgard GPUs have been tested.
>
>> +static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,
>> +			    struct drm_file *file_priv)
>> +{
>> +	struct drm_panfrost_get_bo_offset *args = data;
>> +	struct drm_gem_object *gem_obj;
>> +	struct panfrost_gem_object *bo;
>> +
>
> Missing check for pad == 0.  With that fixed,
>
> Reviewed-by: Eric Anholt <eric@...olt.net>

I suppose you could also drop both flags and pad from uapi, since both
of them must be 0 filled and you could just add a new flags at the end
of the create struct if you ever need one.

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