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Bluetooth: controller: split: Fix feature exchange state reset

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Fix feature exchange event generation to be correctly
deferred to wait for Rx node availability for cases when
the procedure has already been performed on air.

Without this fix, remote feature request from host may not
get back a HCI event back.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2019-11-05 12:17:57 +05:30 • committed by Carles Cufí
commit 0a892310d3
1 changed files with 4 additions and 5 deletions
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9
subsys/bluetooth/controller/ll_sw/ull_conn.c
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@ -2657,19 +2657,18 @@ static inline void event_fex_prep(struct ll_conn *conn)
struct node_rx_pdu *rx;
struct pdu_data *pdu;
/* procedure request acked */
conn->llcp_feature.ack = conn->llcp_feature.req;
/* get a rx node for ULL->LL */
rx = ll_pdu_rx_alloc();
if (!rx) {
return;
}
rx->hdr.handle = conn->lll.handle;
rx->hdr.type = NODE_RX_TYPE_DC_PDU;
/* procedure request acked */
conn->llcp_feature.ack = conn->llcp_feature.req;
/* prepare feature rsp structure */
rx->hdr.handle = conn->lll.handle;
rx->hdr.type = NODE_RX_TYPE_DC_PDU;
pdu = (void *)rx->pdu;
pdu->ll_id = PDU_DATA_LLID_CTRL;
pdu->len = offsetof(struct pdu_data_llctrl, feature_rsp) +