lkml.org 
[lkml]   [2020]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.9 23/71] bnxt_en: Fix PCI AER error recovery flow
Date
From: Vasundhara Volam <vasundhara-v.volam@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.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>
---
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 421cbba9a3bc8..f451be63ab7e6 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7085,6 +7085,7 @@ 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:
@@ -7158,6 +7159,8 @@ 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);

if (netif_running(netdev))
err = bnxt_open(netdev);
--
2.25.1


\
 
 \ /
  Last update: 2020-09-11 19:25    [W:0.282 / U:2.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site