From: Michael Chan <michael.chan@broadcom.com>
Date: Thu, 29 Aug 2019 23:54:48 -0400
Subject: bnxt_en: Suppress all error messages in hwrm_do_send_msg() in silent
 mode.
Patch-mainline: v5.4-rc1
Git-commit: 5bedb5296e33e889818d77c8ec69040481fab157
References: jsc#SLE-8371 bsc#1153274

If the silent parameter is set, suppress all messages when there is
no response from firmware.  When polling for firmware to come out of
reset, no response may be normal and we want to suppress the error
messages.  Also, don't poll for the firmware DMA response if Bus Master
is disabled.  This is in preparation for error recovery when firmware
may be in error or reset state or Bus Master is disabled.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c |   27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4155,6 +4155,9 @@ static int bnxt_hwrm_do_send_msg(struct
 	/* Ring channel doorbell */
 	writel(1, bp->bar0 + doorbell_offset);
 
+	if (!pci_is_enabled(bp->pdev))
+		return 0;
+
 	if (!timeout)
 		timeout = DFLT_HWRM_CMD_TIMEOUT;
 	/* convert timeout to usec */
@@ -4186,8 +4189,9 @@ static int bnxt_hwrm_do_send_msg(struct
 		}
 
 		if (bp->hwrm_intr_seq_id != (u16)~seq_id) {
-			netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
-				   le16_to_cpu(req->req_type));
+			if (!silent)
+				netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
+					   le16_to_cpu(req->req_type));
 			return -EBUSY;
 		}
 		len = (le32_to_cpu(*resp_len) & HWRM_RESP_LEN_MASK) >>
@@ -4212,10 +4216,11 @@ static int bnxt_hwrm_do_send_msg(struct
 		}
 
 		if (i >= tmo_count) {
-			netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
-				   HWRM_TOTAL_TIMEOUT(i),
-				   le16_to_cpu(req->req_type),
-				   le16_to_cpu(req->seq_id), len);
+			if (!silent)
+				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
+					   HWRM_TOTAL_TIMEOUT(i),
+					   le16_to_cpu(req->req_type),
+					   le16_to_cpu(req->seq_id), len);
 			return -EBUSY;
 		}
 
@@ -4230,10 +4235,12 @@ static int bnxt_hwrm_do_send_msg(struct
 		}
 
 		if (j >= HWRM_VALID_BIT_DELAY_USEC) {
-			netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n",
-				   HWRM_TOTAL_TIMEOUT(i),
-				   le16_to_cpu(req->req_type),
-				   le16_to_cpu(req->seq_id), len, *valid);
+			if (!silent)
+				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n",
+					   HWRM_TOTAL_TIMEOUT(i),
+					   le16_to_cpu(req->req_type),
+					   le16_to_cpu(req->seq_id), len,
+					   *valid);
 			return -EBUSY;
 		}
 	}