linux-kernel - Re: [PATCH] ASoC: sophgo: fix 64-bit division build failure

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Message-ID:
 <MA5PR01MB12500FB2BC37E21E7763DB5BFFE9BA@MA5PR01MB12500.INDPRD01.PROD.OUTLOOK.COM>
Date: Tue, 3 Feb 2026 08:11:57 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: Mark Brown <broonie@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
 Inochi Amaoto <inochiama@...il.com>,
 "Anton D. Stavinskii" <stavinsky@...il.com>, Arnd Bergmann <arnd@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>, linux-sound@...r.kernel.org,
 sophgo@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: sophgo: fix 64-bit division build failure

On 2/3/2026 6:48 AM, Mark Brown wrote:
> On Mon, 02 Feb 2026 10:53:14 +0100, Arnd Bergmann wrote:
>> cv1800b_adc_setbclk_div() does four 64-bit divisions in a row, which
>> is rather inefficient on 32-bit systems, and using the plain division
>> causes a build failure as a result:
>>
>> ERROR: modpost: "__aeabi_uldivmod" [sound/soc/sophgo/cv1800b-sound-adc.ko] undefined!
>>
>> Consolidate those into a single division using the div_u64() macro.
>>
>> [...]
> Applied to
>
>     https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
>
> Thanks!
>
> [1/1] ASoC: sophgo: fix 64-bit division build failure
>        commit: cad9720dd7e4dcdaec8e854fb2c1d1d45fd6dbad
>
> All being well this means that it will be integrated into the linux-next
> tree (usually sometime in the next 24 hours) and sent to Linus during
> the next merge window (or sooner if it is a bug fix), however if
> problems are discovered then the patch may be dropped or reverted.
>
> You may get further e-mails resulting from automated or manual testing
> and review of the tree, please engage with people reporting problems and
> send followup patches addressing any issues that are reported if needed.
>
> If any updates are required or you are submitting further changes they
> should be sent as incremental updates against current git, existing
> patches will not be replaced.
>
> Please add any relevant lists and maintainers to the CCs when replying
> to this mail.
>
> Thanks,
> Mark
>
Hi, Mark,

I noticed Arnd sent v2 for this patch, please see 
https://lore.kernel.org/sophgo/20260202215956.2127414-1-arnd@kernel.org/.

Chen