Re: [PATCH] power: vexpress: fix -Wvoid-pointer-to-enum-cast warning

From: Sudeep Holla
Date: Fri Aug 18 2023 - 05:46:07 EST


On Mon, Aug 14, 2023 at 10:21:51PM +0000, Justin Stitt wrote:
> When building with clang 18 I see the following warning:
> | drivers/power/reset/vexpress-poweroff.c:124:10: warning: cast to smaller integer type 'enum vexpress_reset_func' from 'const void *' [-Wvoid-pointer-to-enum-cast]
> | 124 | switch ((enum vexpress_reset_func)match->data) {
>
> This is due to the fact that `match->data` is a void* while `enum vexpress_reset_func`
> has the size of an int. This leads to truncation and possible data loss.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/1910
> Reported-by: Nathan Chancellor <nathan@xxxxxxxxxx>

Hi Sebastian,

I am assuming you will pick this up.

Acked-by: Sudeep Holla <sudeep.holla@xxxxxxx>

--
Regards,
Sudeep