linux-kernel - Re: [PATCH v3 2/3] hwrng: exynos - add Samsung Exynos True RNG driver

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Message-id: <878tdvhr4h.fsf%l.stelmach@samsung.com>
Date:   Fri, 22 Dec 2017 13:41:18 +0100
From:   Łukasz Stelmach <l.stelmach@...sung.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        "Andrew F . Davis" <afd@...com>,
        PrasannaKumar Muralidharan <prasannatsmkumar@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Matt Mackall <mpm@...enic.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kukjin Kim <kgene@...nel.org>, devicetree@...r.kernel.org,
        linux-crypto@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v3 2/3] hwrng: exynos - add Samsung Exynos True RNG
 driver

It was <2017-12-22 pią 09:35>, when Herbert Xu wrote:
> On Fri, Dec 22, 2017 at 09:29:38AM +0100, Marek Szyprowski wrote:
>> Hi,
>> 
>> On 2017-12-22 09:24, Herbert Xu wrote:
>> >On Mon, Dec 04, 2017 at 01:53:50PM +0100, Łukasz Stelmach wrote:
>> >>Add support for True Random Number Generator found in Samsung Exynos
>> >>5250+ SoCs.
>> >>
>> >>Signed-off-by: Łukasz Stelmach <l.stelmach@...sung.com>
>> >This doesn't build for me:
>> >
>> >   CC [M]  drivers/char/hw_random/exynos-trng.o
>> >../drivers/char/hw_random/exynos-trng.c:230:1: error: \u2018exynos_rng_dt_match\u2019 undeclared here (not in a function)
>> >../drivers/char/hw_random/exynos-trng.c:230:1: error: \u2018__mod_of__exynos_rng_dt_match_device_table\u2019 aliased to undefined symbol \u2018exynos_rng_dt_match\u2019
>> >make[2]: *** [drivers/char/hw_random/exynos-trng.o] Error 1
>> >make[1]: *** [_module_drivers/char/hw_random] Error 2
>> 
>> This looks like a missing dependency on "OF" when "COMPILE_TEST" is
>> selected.
>
> Actually it looks like a typo.  The variable is actually called
> exynos_trng_dt_match as opposed to exynos_rng_dt_match.

Indeed. Honestly, I haven't seen this problem, not even once. Right, I
have never compiled it as a module. Thanks for spotting.

-- 
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics

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