Re: [PATCH] random: make random_get_entropy() return an unsigned long

[Thomas Gleixner]

On Fri, Apr 08 2022 at 19:53, Jason A. Donenfeld wrote:
> Some implementations were returning type `unsigned long`, while others
> that fell back to get_cycles() were implicitly returning a `cycles_t` or
> an untyped constant int literal. That makes for weird and confusing
> code, and basically all code in the kernel already handled it like it
> was an `unsigned long`. I recently tried to handle it as the largest
> type it could be, a `cycles_t`, but doing so doesn't really help with
> much. Instead let's just make random_get_entropy() return an unsigned
> long all the time. This also matches the commonly used
> `arch_get_random_long()` function, so now RDRAND and RDTSC return the
> same sized integer, which means one can fallback to the other more
> gracefully.

Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>