Re: next-20250819: sdhci-cadence.c error variable 'hrs37_mode' is uninitialized when used here [-Werror,-Wuninitialized]

[Nathan Chancellor]

Hi Naresh,

On Wed, Aug 20, 2025 at 06:43:51PM +0530, Naresh Kamboju wrote:
> The following build warnings / errors noticed with arm64 defconfig
> and x86 allyesconfig with clang-20 and clang-nightly toolchains.
> 
> Regression Analysis:
> - New regression? yes
> - Reproducibility? yes
> 
> Build regression: next-20250819 sdhci-cadence.c error variable
> 'hrs37_mode' is uninitialized when used here [-Werror,-Wuninitialized]
> 
> Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
> 
> ## Build log
> drivers/mmc/host/sdhci-cadence.c:297:9: error: variable 'hrs37_mode'
> is uninitialized when used here [-Werror,-Wuninitialized]
>   297 |         writel(hrs37_mode, hrs37_reg);
>       |                ^~~~~~~~~~
> drivers/mmc/host/sdhci-cadence.c:291:16: note: initialize the variable
> 'hrs37_mode' to silence this warning
>   291 |         u32 hrs37_mode;
>       |                       ^
>       |                        = 0

Thanks for the report. I sent a fix for this yesterday:

https://lore.kernel.org/20250819-mmc-sdhci-cadence-fix-uninit-hrs37_mode-v1-1-94aa2d0c438a@xxxxxxxxxx/

Cheers,
Nathan