Commit 69441ba5 authored Dec 23, 2019 by Andy Lutomirski Committed by Greg Kroah-Hartman Jun 22, 2022

random: Don't wake crng_init_wait when crng_init == 1



commit 4c8d062186d9923c09488716b2fb1b829b5b8006 upstream.

crng_init_wait is only used to wayt for crng_init to be set to 2, so
there's no point to waking it when crng_init is set to 1.  Remove the
unnecessary wake_up_interruptible() call.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/6fbc0bfcbfc1fa2c76fd574f5b6f552b11be7fde.1577088521.git.luto@kernel.org


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 69ef3109

drivers/char/random.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -999,7 +999,6 @@ static size_t crng_fast_load(const char *cp, size_t len)
		if (crng_init_cnt >= CRNG_INIT_CNT_THRESH) {
		invalidate_batched_entropy();
		crng_init = 1;
		wake_up_interruptible(&crng_init_wait);
		pr_notice("random: fast init done\n");
		}
		return ret;