iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bnxt_en: Add delay to handle Downstream Port Containment (DPC) AER

Browse Source 
In case of DPC, after issuing the hot reset, the
kernel waits for 100ms for the device to complete
the reset. However on some older chips, the firmware
may take up to 1 second to complete the reset, only
after which the driver can restart the card.

Introduce delay of 900ms to handle this scenario on
the older chipsets.

Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/20240402093753.331120-2-pavan.chebbi@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vikas Gupta 2024-04-02 02:37:47 -07:00 committed by Jakub Kicinski
parent 04172043bd
commit d5ab32e9b0
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -15550,6 +15550,10 @@ static pci_ers_result_t bnxt_io_slot_reset(struct pci_dev *pdev)
netdev_info(bp->dev, "PCI Slot Reset\n"); netdev_info(bp->dev, "PCI Slot Reset\n");
if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS) &&
test_bit(BNXT_STATE_PCI_CHANNEL_IO_FROZEN, &bp->state))
msleep(900);
rtnl_lock(); rtnl_lock();
if (pci_enable_device(pdev)) { if (pci_enable_device(pdev)) {