diff options
| -rw-r--r-- | include/linux/rfkill.h | 1 | ||||
| -rw-r--r-- | net/rfkill/rfkill.c | 11 |
2 files changed, 9 insertions, 3 deletions
diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index e92d8e94bb8..4cd64b0d982 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -49,6 +49,7 @@ enum rfkill_state { RFKILL_STATE_SOFT_BLOCKED = 0, /* Radio output blocked */ RFKILL_STATE_UNBLOCKED = 1, /* Radio output allowed */ RFKILL_STATE_HARD_BLOCKED = 2, /* Output blocked, non-overrideable */ + RFKILL_STATE_MAX, /* marker for last valid state */ }; /* diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c index fae7ffade9c..47e0b2d232e 100644 --- a/net/rfkill/rfkill.c +++ b/net/rfkill/rfkill.c @@ -201,6 +201,8 @@ static int rfkill_toggle_radio(struct rfkill *rfkill, * BLOCK even a transmitter that is already in state * RFKILL_STATE_HARD_BLOCKED */ break; + default: + return -EINVAL; } if (force || state != rfkill->state) { @@ -234,6 +236,9 @@ static void __rfkill_switch_all(const enum rfkill_type type, { struct rfkill *rfkill; + if (unlikely(state >= RFKILL_STATE_MAX)) + return; + rfkill_global_states[type].current_state = state; list_for_each_entry(rfkill, &rfkill_list, node) { if ((!rfkill->user_claim) && (rfkill->type == type)) { @@ -329,9 +334,7 @@ int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state) { enum rfkill_state oldstate; - if (state != RFKILL_STATE_SOFT_BLOCKED && - state != RFKILL_STATE_UNBLOCKED && - state != RFKILL_STATE_HARD_BLOCKED) + if (unlikely(state >= RFKILL_STATE_MAX)) return -EINVAL; mutex_lock(&rfkill->mutex); @@ -727,6 +730,8 @@ int __must_check rfkill_register(struct rfkill *rfkill) return -EINVAL; if (rfkill->type >= RFKILL_TYPE_MAX) return -EINVAL; + if (rfkill->state >= RFKILL_STATE_MAX) + return -EINVAL; snprintf(dev->bus_id, sizeof(dev->bus_id), "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1); |