diff options
| -rw-r--r-- | net/nfc/digital_core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/nfc/digital_core.c b/net/nfc/digital_core.c index b105cfb00e76..a6ce3c627e4e 100644 --- a/net/nfc/digital_core.c +++ b/net/nfc/digital_core.c @@ -386,6 +386,8 @@ int digital_target_found(struct nfc_digital_dev *ddev, void digital_poll_next_tech(struct nfc_digital_dev *ddev) { + u8 rand_mod; + digital_switch_rf(ddev, 0); mutex_lock(&ddev->poll_lock); @@ -395,8 +397,8 @@ void digital_poll_next_tech(struct nfc_digital_dev *ddev) return; } - ddev->poll_tech_index = (ddev->poll_tech_index + 1) % - ddev->poll_tech_count; + get_random_bytes(&rand_mod, sizeof(rand_mod)); + ddev->poll_tech_index = rand_mod % ddev->poll_tech_count; mutex_unlock(&ddev->poll_lock); |