diff options
Diffstat (limited to 'drivers/char/hw_random/core.c')
| -rw-r--r-- | drivers/char/hw_random/core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index cf49f1c88f0..7ac96fbc06e 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -41,6 +41,7 @@ #include <linux/miscdevice.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/random.h> #include <asm/uaccess.h> @@ -304,6 +305,8 @@ int hwrng_register(struct hwrng *rng) { int err = -EINVAL; struct hwrng *old_rng, *tmp; + unsigned char bytes[16]; + int bytes_read; if (rng->name == NULL || (rng->data_read == NULL && rng->read == NULL)) @@ -344,6 +347,10 @@ int hwrng_register(struct hwrng *rng) } INIT_LIST_HEAD(&rng->list); list_add_tail(&rng->list, &rng_list); + + bytes_read = rng_get_data(rng, bytes, sizeof(bytes), 1); + if (bytes_read > 0) + add_device_randomness(bytes, bytes_read); out_unlock: mutex_unlock(&rng_mutex); out: |