linux-kernel - Re: [PATCH] crypto: picoxcell - Fix module autoload for non-OF registration

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Date:   Mon, 02 Jan 2017 17:24:54 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Javier Martinez Canillas <javier@....samsung.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        linux-crypto@...r.kernel.org, Jamie Iles <jamie@...ieiles.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] crypto: picoxcell - Fix module autoload for non-OF registration

On Monday, January 2, 2017 1:13:24 PM CET Javier Martinez Canillas wrote:
> Hello Arnd,
> 
> On 01/02/2017 01:05 PM, Arnd Bergmann wrote:
> > On Monday, January 2, 2017 12:38:02 PM CET Javier Martinez Canillas wrote:
> >> If the driver is built as a module, autoload won't work because the module
> >> alias information is not filled. So user-space can't match the registered
> >> device with the corresponding module if the device isn't registered via OF.
> >>
> >> Export the module alias information using the MODULE_DEVICE_TABLE() macro.
> > 
> > I think we can just remove the table, as the platform only supports
> > booting through DT anyway.
> > 
> 
> Agreed. I should had checked if mach-picoxcell was DT-only indeed.
> 
> Should I also make the driver to depend on OF and remove the #ifdefery then?

I don't think we need a dependency, the #ifdef checks in there were needed
only to make the driver smaller if OF is disabled and it should still build
fine if someone tries to compile it for CONFIG_COMPILE_TEST without
CONFIG_OF.

If we remove the platform ID, we can however also remove the 
spacc_is_compatible() function and just call of_device_is_compatible()
in its place.

	Arnd