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    Subject[PATCH 4.9 053/264] random: Dont wake crng_init_wait when crng_init == 1
    Date
    From: Andy Lutomirski <luto@kernel.org>

    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>
    ---
    drivers/char/random.c | 1 -
    1 file changed, 1 deletion(-)

    --- a/drivers/char/random.c
    +++ b/drivers/char/random.c
    @@ -963,7 +963,6 @@ static int crng_fast_load(const char *cp
    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 1;

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