msm: camera: common: Return appropriate error code for cancelled requests

If a request is submitted post flush and the request ID of that
request is <= last flush req ID return an appropriate error code
to indicate the same.

CRs-Fixed: 2720555
Change-Id: Ic26c4fc5f0ba490ed277b3bb301cc02d1fa027d6
Signed-off-by: Karthik Anantha Ram <[email protected]>
Signed-off-by: Mukund Madhusudan Atre <[email protected]>

drivers/cam_core/cam_context_utils.c

@@ -396,7 +396,7 @@ int32_t cam_context_prepare_dev_to_hw(struct cam_context *ctx,
 		CAM_ERR(CAM_CORE,
 			"request %lld has been flushed, reject packet",
 			packet->header.request_id);
-		rc = -EINVAL;
+		rc = -EBADR;
 		goto free_req;
 	}
 

drivers/cam_req_mgr/cam_req_mgr_core.c

@@ -2829,8 +2829,17 @@ static int cam_req_mgr_cb_add_req(struct cam_req_mgr_add_request *add_req)
 	/* Validate if req id is present in input queue */
 	idx = __cam_req_mgr_find_slot_for_req(link->req.in_q, add_req->req_id);
 	if (idx < 0) {
-		CAM_ERR(CAM_CRM, "req %lld not found in in_q", add_req->req_id);
-		rc = -ENOENT;
+		if (((uint32_t)add_req->req_id) <= (link->last_flush_id)) {
+			CAM_ERR(CAM_CRM,
+				"req %lld not found in in_q; it has been flushed [last_flush_req %u]",
+				add_req->req_id, link->last_flush_id);
+			rc = -EBADR;
+		} else {
+			CAM_ERR(CAM_CRM,
+				"req %lld not found in in_q",
+				add_req->req_id);
+			rc = -ENOENT;
+		}
 		goto end;
 	}