aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorAllen Hubbe <Allen.Hubbe@emc.com>2015-05-12 06:24:27 -0400
committerJon Mason <jdmason@kudzu.us>2015-07-04 14:06:24 -0400
commitc0900b33d1c8c24246eaedb9553f078024c332fc (patch)
tree8d382fbe6b459d012aac37005db58e83117ddbd3
parente22e0b9dcf78ee7a72561a6770c9ea554eb65096 (diff)
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 <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
-rw-r--r--drivers/ntb/ntb_transport.c3
1 files changed, 1 insertions, 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) {

Privacy Policy