diff mbox series

[net-next,6/7] bnxt_en: Remove the read of BNXT_FW_RESET_INPROG_REG after firmware reset.

Message ID 1616396925-16596-7-git-send-email-michael.chan@broadcom.com
State New
Headers show
Series bnxt_en: Error recovery improvements. | expand

Commit Message

Michael Chan March 22, 2021, 7:08 a.m. UTC 
From: Vasundhara Volam <vasundhara-v.volam@broadcom.com>

Once the chip goes through reset, the register mapping may be lost
and any read of the mapped health registers may return garbage value
until the registers are mapped again in the init path.

Reading BNXT_FW_RESET_INPROG_REG after firmware reset will likely
return garbage value due to the above reason.  Reading this register
is for information purpose only so remove it.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 31 ++++++++---------------
 1 file changed, 11 insertions(+), 20 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index edbe5982cf41..6db5e927a473 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -11769,28 +11769,19 @@  static void bnxt_fw_reset_task(struct work_struct *work)
 		return;
 	case BNXT_FW_RESET_STATE_ENABLE_DEV:
 		bnxt_inv_fw_health_reg(bp);
-		if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state)) {
-			u32 val;
-
-			if (!bp->fw_reset_min_dsecs) {
-				u16 val;
-
-				pci_read_config_word(bp->pdev, PCI_SUBSYSTEM_ID,
-						     &val);
-				if (val == 0xffff) {
-					if (bnxt_fw_reset_timeout(bp)) {
-						netdev_err(bp->dev, "Firmware reset aborted, PCI config space invalid\n");
-						goto fw_reset_abort;
-					}
-					bnxt_queue_fw_reset_work(bp, HZ / 1000);
-					return;
+		if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state) &&
+		    !bp->fw_reset_min_dsecs) {
+			u16 val;
+
+			pci_read_config_word(bp->pdev, PCI_SUBSYSTEM_ID, &val);
+			if (val == 0xffff) {
+				if (bnxt_fw_reset_timeout(bp)) {
+					netdev_err(bp->dev, "Firmware reset aborted, PCI config space invalid\n");
+					goto fw_reset_abort;
 				}
+				bnxt_queue_fw_reset_work(bp, HZ / 1000);
+				return;
 			}
-			val = bnxt_fw_health_readl(bp,
-						   BNXT_FW_RESET_INPROG_REG);
-			if (val)
-				netdev_warn(bp->dev, "FW reset inprog %x after min wait time.\n",
-					    val);
 		}
 		clear_bit(BNXT_STATE_FW_FATAL_COND, &bp->state);
 		if (pci_enable_device(bp->pdev)) {