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| author | Allen Hubbe <Allen.Hubbe@emc.com> | 2015-05-12 12:24:27 +0200 |
|---|---|---|
| committer | Jon Mason <jdmason@kudzu.us> | 2015-07-04 20:06:24 +0200 |
| commit | c0900b33d1c8c24246eaedb9553f078024c332fc (patch) | |
| tree | 8d382fbe6b459d012aac37005db58e83117ddbd3 | |
| parent | NTB: Differentiate transport link down messages (diff) | |
| download | linux-c0900b33d1c8c24246eaedb9553f078024c332fc.tar.xz linux-c0900b33d1c8c24246eaedb9553f078024c332fc.zip | |
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.c | 3 |
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) { |