From: Vasundhara Volam <vasundhara-v.vo...@broadcom.com>

[ Upstream commit df3875ec550396974b1d8a518bd120d034738236 ]

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: 6316ea6db93d ("bnxt_en: Enable AER support.")
Signed-off-by: Vasundhara Volam <vasundhara-v.vo...@broadcom.com>
Signed-off-by: Michael Chan <michael.c...@broadcom.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index a189061d8f97e..7de38ae5c18f2 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -8251,6 +8251,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const 
struct pci_device_id *ent)
 
        bnxt_parse_log_pcie_link(bp);
 
+       pci_save_state(pdev);
        return 0;
 
 init_err_cleanup_tc:
@@ -8412,6 +8413,8 @@ 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))
-- 
2.25.1



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