When the PCI adapter is going through error recovery, a call to
mlx4_ib_post_send() will return success without the command actually
arriving to the hardware. Adding a call to pci_channel_offline() to
check the state of the PCI slot and returning an error will allow the
upper layers to be aware that the command didn't succeed.
Signed-off-by: Kleber Sacilotto de Souza <kleb...@linux.vnet.ibm.com>
---
drivers/infiniband/hw/mlx4/qp.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 35cced2..0fa4f72 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -2216,6 +2216,9 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct
ib_send_wr *wr,
__be32 blh;
int i;
+ if (pci_channel_offline(to_mdev(ibqp->device)->dev->pdev))
+ return -EIO;
+
spin_lock_irqsave(&qp->sq.lock, flags);
ind = qp->sq_next_wqe;
--
1.7.1
--
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