From c0900b33d1c8c24246eaedb9553f078024c332fc Mon Sep 17 00:00:00 2001 From: Allen Hubbe Date: Tue, 12 May 2015 06:24:27 -0400 Subject: 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 Signed-off-by: Jon Mason --- drivers/ntb/ntb_transport.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 8d9b59f7fa07..0f86b60a0c0e 100644 --- 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) { -- cgit v1.2.3