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Re: wifi: brcmsmac: avoid function pointer casts

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Arnd Bergmann <arnd@xxxxxxxxxx> wrote:

> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> An old cleanup went a little too far and causes a warning with clang-16
> and higher as it breaks control flow integrity (KCFI) rules:
> 
> drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.c:64:34: error: cast from 'void (*)(struct brcms_phy *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
>    64 |                         brcms_init_timer(physhim->wl, (void (*)(void *))fn,
>       |                                                       ^~~~~~~~~~~~~~~~~~~~
> 
> Change this one instance back to passing a void pointer so it can be
> used with the timer callback interface.
> 
> Fixes: d89a4c80601d ("staging: brcm80211: removed void * from softmac phy")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Acked-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>

Patch applied to wireless-next.git, thanks.

e1ea6db35fc3 wifi: brcmsmac: avoid function pointer casts

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20240213100548.457854-1-arnd@xxxxxxxxxx/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches





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