From 0f69a7dff94d3e82ee51685f6a8fea7860b023b8 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Tue, 2 Jun 2015 03:45:07 -0400 Subject: [PATCH] NTB: Read peer info from local SPAD in transport The transport was writing and then reading the peer scratch pad, essentially reading what it just wrote instead of exchanging any information with the peer. The transport expects the peer values to be the same as the local values, so this issue was not obvious. Signed-off-by: Dave Jiang Signed-off-by: Jon Mason --- drivers/ntb/ntb_transport.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 9faf1c6029af..d9538e911df6 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -761,17 +761,17 @@ static void ntb_transport_link_work(struct work_struct *work) ntb_peer_spad_write(ndev, VERSION, NTB_TRANSPORT_VERSION); /* Query the remote side for its info */ - val = ntb_peer_spad_read(ndev, VERSION); + val = ntb_spad_read(ndev, VERSION); dev_dbg(&pdev->dev, "Remote version = %d\n", val); if (val != NTB_TRANSPORT_VERSION) goto out; - val = ntb_peer_spad_read(ndev, NUM_QPS); + val = ntb_spad_read(ndev, NUM_QPS); dev_dbg(&pdev->dev, "Remote max number of qps = %d\n", val); if (val != nt->qp_count) goto out; - val = ntb_peer_spad_read(ndev, NUM_MWS); + val = ntb_spad_read(ndev, NUM_MWS); dev_dbg(&pdev->dev, "Remote number of mws = %d\n", val); if (val != nt->mw_count) goto out; @@ -779,10 +779,10 @@ static void ntb_transport_link_work(struct work_struct *work) for (i = 0; i < nt->mw_count; i++) { u64 val64; - val = ntb_peer_spad_read(ndev, MW0_SZ_HIGH + (i * 2)); + val = ntb_spad_read(ndev, MW0_SZ_HIGH + (i * 2)); val64 = (u64)val << 32; - val = ntb_peer_spad_read(ndev, MW0_SZ_LOW + (i * 2)); + val = ntb_spad_read(ndev, MW0_SZ_LOW + (i * 2)); val64 |= val; dev_dbg(&pdev->dev, "Remote MW%d size = %#llx\n", i, val64); -- 2.34.1