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bnxt_en: Fix PCI AER error recovery flow

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[ Upstream commit df3875ec55 ]

When a PCI error is detected the PCI state could be corrupt, save
the PCI state after initialization and restore it after the slot
reset.

Fixes: 6316ea6db9 ("bnxt_en: Enable AER support.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vasundhara Volam
2020-08-26 01:08:35 -04:00
committed by Greg Kroah-Hartman
parent 8674defc50
commit 9895dfea96
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@@ -9128,6 +9128,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
(long)pci_resource_start(pdev, 0), dev->dev_addr);
pcie_print_link_status(pdev);
pci_save_state(pdev);
return 0;
init_err_cleanup_tc:
@@ -9289,6 +9290,8 @@ static pci_ers_result_t bnxt_io_slot_reset(struct pci_dev *pdev)
"Cannot re-enable PCI device after reset.\n");
} else {
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
err = bnxt_hwrm_func_reset(bp);
if (!err && netif_running(netdev))