netdev - Re: [PATCH] net: mscc: Fix non-GPL export of regmap APIs

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Message-ID: <20210810125536.edr64jhzgr7rdnmd@skbuf>
Date:   Tue, 10 Aug 2021 12:55:37 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Mark Brown <broonie@...nel.org>
CC:     Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: mscc: Fix non-GPL export of regmap APIs

On Tue, Aug 10, 2021 at 01:37:48PM +0100, Mark Brown wrote:
> The ocelot driver makes use of regmap, wrapping it with driver specific
> operations that are thin wrappers around the core regmap APIs. These are
> exported with EXPORT_SYMBOL, dropping the _GPL from the core regmap
> exports which is frowned upon. Add _GPL suffixes to at least the APIs that
> are doing register I/O.
> 
> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---

Stupid question: is this enough? We also have order-two symbols exported
as non-GPL, which call one of {__ocelot_read_ix, __ocelot_write_ix,
__ocelot_rmw_ix, ocelot_port_writel, ocelot_port_rmwl, ocelot_regfields_init,
ocelot_regmap_init}, and therefore indirectly call regmap. In fact, I
think that all symbols exported by ocelot do that.