[PATCH v2 10/17] NTB: Do not advance transport RX on link down

Allen Hubbe
2015-05-21T13:25:40Z

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 e2d4258..6260016 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) {
--
2.4.0.rc0.43.gcf8a8c6