linux-kernel - Re: [PATCH] ASoC: atmel-classd: select correct Kconfig symbol

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Date:   Tue, 5 Dec 2017 12:13:41 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: atmel-classd: select correct Kconfig symbol

On Tue, Dec 5, 2017 at 11:57 AM, Alexandre Belloni
<alexandre.belloni@...e-electrons.com> wrote:
> On 05/12/2017 at 11:09:38 +0100, Arnd Bergmann wrote:
>> Commit 061981ff8cc8 ("ASoC: atmel: properly select dma driver state")
>> changed the way that the dependencies are handled, but then the
>> Class D amplifier support got merged, which used the old method.
>>
>> This seems to have triggered a very rare randconfig condition for me
>> now, leading to a link error:
>>
>> sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_set_audio':
>> atmel_ssc_dai.c:(.text+0x79c): undefined reference to `atmel_pcm_dma_platform_register'
>> atmel_ssc_dai.c:(.text+0x79c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `atmel_pcm_dma_platform_register'
>> sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_put_audio':
>> atmel_ssc_dai.c:(.text+0xf24): undefined reference to `atmel_pcm_dma_platform_unregister'
>> atmel_ssc_dai.c:(.text+0xf24): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `atmel_pcm_dma_platform_unregister'
>>
>> Changing it to select SND_ATMEL_SOC_SSC_DMA as intended rather than
>> SND_ATMEL_SOC_DMA directly makes it work again.
>>
>> Fixes: e0a25b6d1862 ("ASoC: atmel-classd: add the Audio Class D Amplifier")
>> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Acked-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>

Unfortunately, my testing just found a new problem with this patch
applied, I had
not run enough randconfig tests on top of it:

sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_set_audio':
atmel_ssc_dai.c:(.text+0x73c): undefined reference to `ssc_request'
sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_put_audio':
atmel_ssc_dai.c:(.text+0x7be): undefined reference to `ssc_free'

This is for a configuration with SND_ATMEL_SOC_CLASSD=y
and CONFIG_ATMEL_SSC=n. Could you tell me whether that is a
sensible configuration that should work, or whether we need a dependency
on ATMEL_SSC in SND_ATMEL_SOC_CLASSD? I can't really tell
from the source code, but you probably know the answer.

       Arnd