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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2015-05-21 16:19:54 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-05-27 17:51:45 +0800 |
| commit | 1d9de44e268d880cbe2d0bd3be1ef0661f93fd34 (patch) | |
| tree | 01d76396141709ae0d763eb8a4689b158eb511e7 /drivers/char/random.c | |
| parent | 374d4ad18a0c4bc844dee42b3b43916e5f46608d (diff) | |
| download | linux-1d9de44e268d880cbe2d0bd3be1ef0661f93fd34.tar.gz linux-1d9de44e268d880cbe2d0bd3be1ef0661f93fd34.tar.bz2 linux-1d9de44e268d880cbe2d0bd3be1ef0661f93fd34.zip | |
random: Wake up all getrandom(2) callers when pool is ready
If more than one application invokes getrandom(2) before the pool
is ready, then all bar one will be stuck forever because we use
wake_up_interruptible which wakes up a single task.
This patch replaces it with wake_up_all.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 9cd6968e2f92..8b8c46b5fd5c 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -660,7 +660,7 @@ retry: r->entropy_total = 0; if (r == &nonblocking_pool) { prandom_reseed_late(); - wake_up_interruptible(&urandom_init_wait); + wake_up_all(&urandom_init_wait); pr_notice("random: %s pool is initialized\n", r->name); } } |