Hello.
On 02/16/2016 06:01 PM, Or Gerlitz wrote:
From: Daniel Jurgens <dani...@mellanox.com>
The PCI channel could go offline during reset due to EEH. Don't bug on in
this case, the error is recoverable.
Fixes: f6bc11e42646 ('net/mlx4_core: Enhance the catas flow to support device
reset')
Signed-off-by: Daniel Jurgens <dani...@mellanox.com>
Reviewed-by: Yishai Hadas <yish...@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx4/catas.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/catas.c
b/drivers/net/ethernet/mellanox/mlx4/catas.c
index 715de8a..e866082 100644
--- a/drivers/net/ethernet/mellanox/mlx4/catas.c
+++ b/drivers/net/ethernet/mellanox/mlx4/catas.c
@@ -182,10 +182,17 @@ void mlx4_enter_error_state(struct mlx4_dev_persistent
*persist)
err = mlx4_reset_slave(dev);
else
err = mlx4_reset_master(dev);
- BUG_ON(err != 0);
+
Just noticed: the empty line here isn't really needed.
+ if (!err)
+ mlx4_err(dev, "device was reset successfully\n");
+ else
+ /* EEH could have disabled the PCI channel during reset. That's
+ * recoverable and the PCI error flow will handle it.
+ */
+ if (!pci_channel_offline(dev->persist->pdev))
+ BUG_ON(1);
[...]
MBR, Sergei
