linux-kernel - Re: drivers/gpu/drm/panel/panel-samsung-ld9040.c:240:12: warning: stack frame size of 8312 bytes in function 'ld9040

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Date:   Mon, 22 Jun 2020 19:35:48 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     kernel test robot <lkp@...el.com>, thierry.reding@...il.com,
        airlied@...ux.ie, daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        lkml <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>
Subject: Re: drivers/gpu/drm/panel/panel-samsung-ld9040.c:240:12: warning:
 stack frame size of 8312 bytes in function 'ld9040_prepare'

Hi Vladimir

> I really don't get what's the problem here. The listing of
> ld9040_prepare at the given commit and with the given .config is:

The culprint is likely ld9040_brightness_set() that is inlined.

I think we have troubles with

    static u8 const ld9040_gammas[25][22]

I did not look closely but if you can reproduce this is where I think you
should look.

	Sam