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    Subject[PATCH 10/16] ntb_transport: don't advance rx on link down
    Date
    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 <Allen.Hubbe@emc.com>
    ---
    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 8a6db1a..9b4e240 100644
    --- a/drivers/ntb/ntb_transport.c
    +++ b/drivers/ntb/ntb_transport.c
    @@ -1211,8 +1211,7 @@ 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) {
    --
    2.4.0.rc0.43.gcf8a8c6


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