diff options
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 32118598a71..46944088cf9 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -540,6 +540,10 @@ static void credit_entropy_store(struct entropy_store *r, int nbits) nbits, r->name); } + /* should we wake readers? */ + if (r == &input_pool && r->entropy_count >= random_read_wakeup_thresh) + wake_up_interruptible(&random_read_wait); + spin_unlock_irqrestore(&r->lock, flags); } @@ -624,10 +628,6 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num) credit_entropy_store(&input_pool, min_t(int, fls(delta>>1), 11)); } - - if (input_pool.entropy_count >= random_read_wakeup_thresh) - wake_up_interruptible(&random_read_wait); - out: preempt_enable(); } @@ -1081,12 +1081,6 @@ static int random_ioctl(struct inode *inode, struct file *file, if (get_user(ent_count, p)) return -EFAULT; credit_entropy_store(&input_pool, ent_count); - /* - * Wake up waiting processes if we have enough - * entropy. - */ - if (input_pool.entropy_count >= random_read_wakeup_thresh) - wake_up_interruptible(&random_read_wait); return 0; case RNDADDENTROPY: if (!capable(CAP_SYS_ADMIN)) @@ -1102,12 +1096,6 @@ static int random_ioctl(struct inode *inode, struct file *file, if (retval < 0) return retval; credit_entropy_store(&input_pool, ent_count); - /* - * Wake up waiting processes if we have enough - * entropy. - */ - if (input_pool.entropy_count >= random_read_wakeup_thresh) - wake_up_interruptible(&random_read_wait); return 0; case RNDZAPENTCNT: case RNDCLEARPOOL: |