hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

net/mlx5: Don't save PCI state when PCI error is detected 

When a PCI error is detected the PCI state could be corrupt, don't save
it in that flow. Save the state after initialization. After restoring the
PCI state during slot reset save it again, restoring the state destroys
the previously saved state info.

Fixes: 05ac2c0b74 ('net/mlx5: Fix race between PCI error handlers and
health work')
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Jurgens 2017-03-10 14:33:02 +02:00 committed by David S. Miller
parent af36370569
commit 5d47f6c89d
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -1352,6 +1352,7 @@ static int init_one(struct pci_dev *pdev,
if (err)
goto clean_load;
pci_save_state(pdev);
return 0;
clean_load:
@ -1407,9 +1408,8 @@ static pci_ers_result_t mlx5_pci_err_detected(struct pci_dev *pdev,
mlx5_enter_error_state(dev);
mlx5_unload_one(dev, priv, false);
/* In case of kernel call save the pci state and drain the health wq */
/* In case of kernel call drain the health wq */
if (state) {
pci_save_state(pdev);
mlx5_drain_health_wq(dev);
mlx5_pci_disable_device(dev);
}
@ -1461,6 +1461,7 @@ static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev)
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
if (wait_vital(pdev)) {
dev_err(&pdev->dev, "%s: wait_vital timed out\n", __func__);