From:   Javier Martinez Canillas <javierm@redhat.com>
To:     linux-kernel@vger.kernel.org
Cc:     Arthur Grillo <arthurgrillo@riseup.net>,
        =?utf-8?Q?Ma=C3=ADra?= Canal <mairacanal@riseup.net>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Maxime Ripard <maxime@cerno.tech>,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@gmail.com>,
        David Gow <davidgow@google.com>,
        =?utf-8?Q?Jos=C3=A9?= =?utf-8?Q?_Exp=C3=B3sito?= 
        <jose.exposito89@gmail.com>, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v2] drm/format-helper: Make conversion_buf_size()
 support sub-byte pixel fmts
In-Reply-To: <20230307215039.346863-1-javierm@redhat.com>
References: <20230307215039.346863-1-javierm@redhat.com>
Date:   Fri, 10 Mar 2023 12:46:27 +0100
Message-ID: <87wn3okewc.fsf@minerva.mail-host-address-is-not-set>
MIME-Version: 1.0
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Javier Martinez Canillas <javierm@redhat.com> writes:

> There are DRM fourcc formats that have pixels smaller than a byte, but the
> conversion_buf_size() function assumes that pixels are a multiple of bytes
> and use the struct drm_format_info .cpp field to calculate the dst_pitch.
>
> Instead, calculate it by using the bits per pixel (bpp) and divide it by 8
> to account for formats that have sub-byte pixels.
>
> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
> ---

Pushed to drm-misc (drm-misc-next). Thanks!

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat