msm: camera: reqmgr: check applied req id for sync mode

While links out of sync, one link faster than another.
the early link reset its slot while receive trigger from
isp, and the slow link will check ready always fail
on sync link, and stuck happens.

CRs-Fixed: 2800759
Change-Id: If615828304947d79ecbb2c87f03af29824598be0
Signed-off-by: chengxue <[email protected]>

drivers/cam_req_mgr/cam_req_mgr_core.c

@@ -950,7 +950,7 @@ static int __cam_req_mgr_send_req(struct cam_req_mgr_core_link *link,
 
 			apply_req.trigger_point = trigger;
 			CAM_DBG(CAM_REQ,
-				"SEND: %d link_hdl: %x pd %d req_id %lld",
+				"SEND:  link_hdl: %x pd %d req_id %lld",
 				link->link_hdl, pd, apply_req.request_id);
 			if (dev->ops && dev->ops->apply_req) {
 				rc = dev->ops->apply_req(&apply_req);
@@ -1334,6 +1334,7 @@ static int __cam_req_mgr_check_sync_req_is_ready(
 	uint64_t sof_timestamp_delta = 0;
 	uint64_t master_slave_diff = 0;
 	bool ready = true, sync_ready = true;
+	int slot_idx_diff = 0;
 
 	if (!sync_link || !link) {
 		CAM_ERR(CAM_CRM, "Sync link null");
@@ -1439,12 +1440,14 @@ static int __cam_req_mgr_check_sync_req_is_ready(
 		return -EAGAIN;
 	}
 
+	slot_idx_diff = (sync_slot_idx - sync_rd_idx + sync_num_slots) %
+		sync_num_slots;
 	if ((sync_link->req.in_q->slot[sync_slot_idx].status !=
 		CRM_SLOT_STATUS_REQ_APPLIED) &&
-		(((sync_slot_idx - sync_rd_idx + sync_num_slots) %
-		sync_num_slots) >= 1) &&
+		((slot_idx_diff > 1) ||
+		((slot_idx_diff == 1) &&
 		(sync_rd_slot->status !=
-		CRM_SLOT_STATUS_REQ_APPLIED)) {
+		CRM_SLOT_STATUS_REQ_APPLIED)))) {
 		CAM_DBG(CAM_CRM,
 			"Req: %lld [other link] not next req to be applied on link: %x",
 			req_id, sync_link->link_hdl);