random: introduce drain_entropy() helper to declutter crng_reseed()

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In preparation for separating responsibilities, break out the entropy
count management part of crng_reseed() into its own function.

No functional changes.

Cc: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

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Jason A. Donenfeld 2022-02-11 12:19:49 +01:00

parent b2f408fe40

commit 246c03dd89

1 changed files with 23 additions and 13 deletions

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36

drivers/char/random.c

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