NTB: Do not advance transport RX on link down

On link down, don't advance RX index to the next entry. The next entry should never be valid after receiving the link down flag. Signed-off-by: Allen Hubbe <[email protected]> Signed-off-by: Jon Mason <[email protected]>
jix · Jul 4, 2015 · c0900b3 · c0900b3
1 parent e22e0b9
commit c0900b3
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
@@ -1212,8 +1212,7 @@ static int ntb_process_rxc(struct ntb_transport_qp *qp)
 		dev_dbg(&qp->ndev->pdev->dev, "link down flag set\n");
 		ntb_qp_link_down(qp);
 		hdr->flags = 0;
-		iowrite32(qp->rx_index, &qp->rx_info->entry);
-		return 0;
+		return -EAGAIN;
 	}
 
 	if (hdr->ver != (u32)qp->rx_pkts) {