| Submitter | Jon Mason |
|---|---|
| Date | Jan. 19, 2013, 9:02 a.m. |
| Message ID | <1358586155-23322-4-git-send-email-jon.mason@intel.com> |
| Download | mbox | patch |
| Permalink | /patch/213795/ |
| State | Not Applicable |
| Delegated to: | David Miller |
| Headers | show |
Comments
Patch
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 1d17857..e9666bd 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -1009,7 +1009,7 @@ static void ntb_tx_copy_task(struct ntb_transport_qp *qp, hdr->ver = qp->tx_pkts; /* Ensure that the data is fully copied out before setting the flag */ - mmiowb(); + wmb(); hdr->flags = entry->flags | DESC_DONE_FLAG; ntb_ring_sdb(qp->ndev, qp->qp_num);
mmiowb is not sufficient to flush the data and is causing data corruption. Change to wmb and the data corruption is no more. Signed-off-by: Jon Mason <jon.mason@intel.com> --- drivers/ntb/ntb_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)