diff mbox series

[net-next,1/7] bnxt_en: Add delay to handle Downstream Port Containment (DPC) AER

Message ID 20240401035730.306790-2-pavan.chebbi@broadcom.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series bnxt_en: Update for net-next | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 943 this patch: 943
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 954 this patch: 954
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 956 this patch: 956
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 10 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-04-01--06-00 (tests: 952)

Commit Message

Pavan Chebbi April 1, 2024, 3:57 a.m. UTC 
From: Vikas Gupta <vikas.gupta@broadcom.com>

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>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index b4db4b1aaffb..6e24a341ad28 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -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");
 
+	if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS) &&
+	    test_bit(BNXT_STATE_PCI_CHANNEL_IO_FROZEN, &bp->state))
+		msleep(900);
+
 	rtnl_lock();
 
 	if (pci_enable_device(pdev)) {