diff options
| -rw-r--r-- | net/bluetooth/l2cap_core.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index b3907a3..1e12d6d 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -310,14 +310,16 @@ static inline u16 l2cap_seq_list_pop(struct l2cap_seq_list *seq_list) static void l2cap_seq_list_clear(struct l2cap_seq_list *seq_list) { - if (seq_list->head != L2CAP_SEQ_LIST_CLEAR) { - u16 i; - for (i = 0; i <= seq_list->mask; i++) - seq_list->list[i] = L2CAP_SEQ_LIST_CLEAR; + u16 i; - seq_list->head = L2CAP_SEQ_LIST_CLEAR; - seq_list->tail = L2CAP_SEQ_LIST_CLEAR; - } + if (seq_list->head == L2CAP_SEQ_LIST_CLEAR) + return; + + for (i = 0; i <= seq_list->mask; i++) + seq_list->list[i] = L2CAP_SEQ_LIST_CLEAR; + + seq_list->head = L2CAP_SEQ_LIST_CLEAR; + seq_list->tail = L2CAP_SEQ_LIST_CLEAR; } static void l2cap_seq_list_append(struct l2cap_seq_list *seq_list, u16 seq) @@ -326,15 +328,16 @@ static void l2cap_seq_list_append(struct l2cap_seq_list *seq_list, u16 seq) /* All appends happen in constant time */ - if (seq_list->list[seq & mask] == L2CAP_SEQ_LIST_CLEAR) { - if (seq_list->tail == L2CAP_SEQ_LIST_CLEAR) - seq_list->head = seq; - else - seq_list->list[seq_list->tail & mask] = seq; + if (seq_list->list[seq & mask] != L2CAP_SEQ_LIST_CLEAR) + return; - seq_list->tail = seq; - seq_list->list[seq & mask] = L2CAP_SEQ_LIST_TAIL; - } + if (seq_list->tail == L2CAP_SEQ_LIST_CLEAR) + seq_list->head = seq; + else + seq_list->list[seq_list->tail & mask] = seq; + + seq_list->tail = seq; + seq_list->list[seq & mask] = L2CAP_SEQ_LIST_TAIL; } static void l2cap_chan_timeout(struct work_struct *work) |
