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| author | Eric Biggers <ebiggers@google.com> | 2021-03-22 08:14:00 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-04-02 10:28:12 +0300 |
| commit | 118a4417e14348b2e46f5e467da8444ec4757a45 (patch) | |
| tree | 76ec8d370181b9c7415054b01322b4ced975ad1b /drivers/char | |
| parent | a181e0fdb2164268274453b5b291589edbb9b22d (diff) | |
| download | linux-118a4417e14348b2e46f5e467da8444ec4757a45.tar.xz | |
random: remove dead code left over from blocking pool
Remove some dead code that was left over following commit 90ea1c6436d2
("random: remove the blocking pool").
Cc: linux-crypto@vger.kernel.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/random.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 5d6acfecd919..605969ed0f96 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -500,7 +500,6 @@ struct entropy_store { unsigned short add_ptr; unsigned short input_rotate; int entropy_count; - unsigned int initialized:1; unsigned int last_data_init:1; __u8 last_data[EXTRACT_SIZE]; }; @@ -660,7 +659,7 @@ static void process_random_ready_list(void) */ static void credit_entropy_bits(struct entropy_store *r, int nbits) { - int entropy_count, orig, has_initialized = 0; + int entropy_count, orig; const int pool_size = r->poolinfo->poolfracbits; int nfrac = nbits << ENTROPY_SHIFT; @@ -717,23 +716,14 @@ retry: if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig) goto retry; - if (has_initialized) { - r->initialized = 1; - kill_fasync(&fasync, SIGIO, POLL_IN); - } - trace_credit_entropy_bits(r->name, nbits, entropy_count >> ENTROPY_SHIFT, _RET_IP_); if (r == &input_pool) { int entropy_bits = entropy_count >> ENTROPY_SHIFT; - if (crng_init < 2) { - if (entropy_bits < 128) - return; + if (crng_init < 2 && entropy_bits >= 128) crng_reseed(&primary_crng, r); - entropy_bits = ENTROPY_BITS(r); - } } } @@ -1372,8 +1362,7 @@ retry: } /* - * This function does the actual extraction for extract_entropy and - * extract_entropy_user. + * This function does the actual extraction for extract_entropy. * * Note: we assume that .poolwords is a multiple of 16 words. */ |