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net/mlx4_core: Avoid repeated calls to pci enable/disable

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Maintain the PCI status and provide wrappers for enabling and disabling
the PCI device.  Performing the actions more than once without doing
its opposite results in warning logs.

This occurred when EEH hotplugged the device causing a warning for
disabling an already disabled device.

Fixes: 2ba5fbd62b ('net/mlx4_core: Handle AER flow properly')
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Jurgens
2016-04-20 16:01:16 +03:00
committed by David S. Miller
parent c12833acff
commit 4bfd2e6e53
2 changed files with 41 additions and 5 deletions
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7
include/linux/mlx4/device.h
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@@ -828,6 +828,11 @@ struct mlx4_vf_dev {
u8 n_ports;
};
enum mlx4_pci_status {
MLX4_PCI_STATUS_DISABLED,
MLX4_PCI_STATUS_ENABLED,
};
struct mlx4_dev_persistent {
struct pci_dev *pdev;
struct mlx4_dev *dev;
@@ -841,6 +846,8 @@ struct mlx4_dev_persistent {
u8 state;
struct mutex interface_state_mutex; /* protect SW state */
u8 interface_state;
struct mutex pci_status_mutex; /* sync pci state */
enum mlx4_pci_status pci_status;
};
struct mlx4_dev {