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random: remove rng_has_arch_random()

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With arch randomness being used by every distro and enabled in
defconfigs, the distinction between rng_has_arch_random() and
rng_is_initialized() is now rather small. In fact, the places where they
differ are now places where paranoid users and system builders really
don't want arch randomness to be used, in which case we should respect
that choice, or places where arch randomness is known to be broken, in
which case that choice is all the more important. So this commit just
removes the function and its one user.

Reviewed-by: Petr Mladek <pmladek@suse.com> # for vsprintf.c
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2022-06-08 10:31:25 +02:00
parent 846bb97e13
commit e052a478a7
3 changed files with 1 additions and 16 deletions
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3
lib/vsprintf.c
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@@ -769,8 +769,7 @@ static inline int __ptr_to_hashval(const void *ptr, unsigned long *hashval_out)
static DECLARE_WORK(enable_ptr_key_work, enable_ptr_key_workfn);
unsigned long flags;
if (!system_unbound_wq ||
(!rng_is_initialized() && !rng_has_arch_random()) ||
if (!system_unbound_wq || !rng_is_initialized() ||
!spin_trylock_irqsave(&filling, flags))
return -EAGAIN;