linux-kernel - Re: [PATCH] drm/msm/a5xx: Always set an OPP supported hardware value

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Message-ID: <CADaigPXdn84cR0Pu-uLnCwOVHNUiOi_t6u7OYYDU6tkSvdWp6A@mail.gmail.com>
Date:   Tue, 18 Feb 2020 13:58:39 -0800
From:   Eric Anholt <eric@...olt.net>
To:     Jordan Crouse <jcrouse@...eaurora.org>
Cc:     linux-arm-msm@...r.kernel.org, David Airlie <airlied@...ux.ie>,
        Sean Paul <sean@...rly.run>, Wen Yang <wen.yang99@....com.cn>,
        AngeloGioacchino Del Regno <kholk11@...il.com>,
        linux-kernel@...r.kernel.org,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Rob Clark <robdclark@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        freedreno@...ts.freedesktop.org,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        Ben Dooks <ben.dooks@...ethink.co.uk>,
        Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH] drm/msm/a5xx: Always set an OPP supported hardware value

On Fri, Feb 14, 2020 at 10:36 AM Jordan Crouse <jcrouse@...eaurora.org> wrote:
>
> If the opp table specifies opp-supported-hw as a property but the driver
> has not set a supported hardware value the OPP subsystem will reject
> all the table entries.
>
> Set a "default" value that will match the default table entries but not
> conflict with any possible real bin values. Also fix a small memory leak
> and free the buffer allocated by nvmem_cell_read().
>
> Signed-off-by: Jordan Crouse <jcrouse@...eaurora.org>

This does fix my warn at boot on db820c.

Reviewed-by: Eric Anholt <eric@...olt.net>