On Fri, May 08, 2026 at 10:00:25AM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> Compile-testing this driver for 32-bit causes a build failure:
> 
> x86_64-linux-ld: sound/soc/tegra/tegra210_mixer.o: in function `tegra210_mixer_configure_gain':
> tegra210_mixer.c:(.text+0x709): undefined reference to `__udivdi3'
> 
> As the driver is only actually used on 64-bit Tegra210, rework the
> division to use the div_u64() helper that avoids the libgcc call.

To be pedantic: the driver is also used on subsequent generations, but
your argument of it only ever being used on 64-bit systems is correct,
so:

Acked-by: Thierry Reding <treding@nvidia.com>