linux-kernel - Re: [alsa-devel] [PATCH] ASoC: fsl: fix fsl

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Date:   Sun, 6 Nov 2016 17:43:53 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Timur Tabi <timur@...i.org>, Nicolin Chen <nicoleotsuka@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <fabio.estevam@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Geliang Tang <geliangtang@....com>,
        moderated for non-subscribers <alsa-devel@...a-project.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [alsa-devel] [PATCH] ASoC: fsl: fix fsl_spdif.c build errors

Hi Randy,

On Sat, Nov 5, 2016 at 9:16 PM, Randy Dunlap <rdunlap@...radead.org> wrote:
> From: Randy Dunlap <rdunlap@...radead.org>
>
> Fix build errors in sound/soc/fsl/fsl_spdif.c by selecting BITREVERSE.
> Fixes these build errors:

Care to explain why the error is happening?

> sound/built-in.o: In function `spdif_write_channel_status':
> fsl_spdif.c:(.text+0xbe39d): undefined reference to `byte_rev_table'
> fsl_spdif.c:(.text+0xbe3a8): undefined reference to `byte_rev_table'
> fsl_spdif.c:(.text+0xbe3be): undefined reference to `byte_rev_table'
> fsl_spdif.c:(.text+0xbe3d8): undefined reference to `byte_rev_table'
>
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Applies-to: all 3.x, all 4.x

Not sure if this last line is correct. The kbuild report says this
error starts to happen with:
commit: 8cfc8ddc99df9509a46043b14af81f5c6a223eab pstore: add lzo/lz4
compression support

on a x86_64 randconfig.

Also, why only SND_SOC_FSL_SPDIF needs to have BITREVERSE selected?