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UPSTREAM: random: convert to ENTROPY_BITS for better code readability

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Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Link: https://lore.kernel.org/r/20190607182517.28266-2-tiny.windzz@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
(cherry picked from commit 12faac30d157970fdbfa171bbeb1fb88350303b1)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 148665638
Change-Id: If96c7d9b69618ec879f1de1565cff0ac057ffe84
This commit is contained in:
Yangtao Li 2019-06-07 14:25:14 -04:00 committed by Mark Salyzyn
parent 97145ad76d
commit d3df0392b7
1 changed files with 2 additions and 3 deletions
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5
drivers/char/random.c
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@ -760,7 +760,7 @@ static void credit_entropy_bits(struct entropy_store *r, int nbits)
if (entropy_bits < 128)
return;
crng_reseed(&primary_crng, r);
entropy_bits = r->entropy_count >> ENTROPY_SHIFT;
entropy_bits = ENTROPY_BITS(r);
}
}
}
@ -1378,8 +1378,7 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min,
goto retry;
trace_debit_entropy(r->name, 8 * ibytes);
if (ibytes &&
(r->entropy_count >> ENTROPY_SHIFT) < random_write_wakeup_bits) {
if (ibytes && ENTROPY_BITS(r) < random_write_wakeup_bits) {
wake_up_interruptible(&random_write_wait);
kill_fasync(&fasync, SIGIO, POLL_OUT);
}