RE: [PATCH] ASoC: rt5575: Fix undefined references to SPI functions

[Oder Chiou <oder_chiou@realtek.com>]

> -----Original Message-----
> From: Mark Brown <broonie@kernel.org>
> Sent: Tuesday, January 27, 2026 5:22 AM
> To: Oder Chiou <oder_chiou@realtek.com>
> Cc: lgirdwood@gmail.com; linux-sound@vger.kernel.org;
> alsa-devel@alsa-project.org; Flove(HsinFu) <flove@realtek.com>; Shuming [范
> 書銘] <shumingf@realtek.com>; Jack Yu <jack.yu@realtek.com>; Derek [方德
> 義] <derek.fang@realtek.com>; kernel test robot <lkp@intel.com>
> Subject: Re: [PATCH] ASoC: rt5575: Fix undefined references to SPI functions
> 
> On Mon, Jan 26, 2026 at 01:17:58PM +0800, Oder Chiou wrote:
> > The kernel test robot reported the following build errors:
> 
> This breaks an x86 allmodconfig build:
> 
> ERROR: modpost: "rt5575_spi_fw_load" [sound/soc/codecs/snd-soc-rt5575.ko]
> undefi
> ned!
> ERROR: modpost: "rt5575_spi_get_device"
> [sound/soc/codecs/snd-soc-rt5575.ko] und
> efined!

I tried to reproduce the reported modpost error with make allmodconfig
on my local machine, but the build passed successfully.

In my generated .config from allmodconfig, I have:
CONFIG_SND_SOC_RT5575=m
CONFIG_SND_SOC_RT5575_SPI=y

I also attempted to manually force CONFIG_SND_SOC_RT5575_SPI=m to see if
that triggered the issue. However, Kbuild produced the following warning
and automatically reverted it to 'y' (since it is a boolean in Kconfig):
.config:11393:warning: symbol value 'm' invalid for SND_SOC_RT5575_SPI

Could you please check if there might be a mismatch in the applied
patches or a specific .config state I should be aware of? I want to make
sure I am testing under the same conditions.

Thanks