From: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Date: Thu, 4 Oct 2018 11:13:48 +0530
Subject: bnxt_en: return proper error when FW returns
 HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED
Patch-mainline: v4.20-rc1
Git-commit: 3a1d52a54a6a4030b294e5f5732f0bfbae0e3815
References: bsc#1104745 FATE#325918

Return proper error code when Firmware returns
HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED for HWRM_NVM_GET/SET_VARIABLE
commands.

Cc: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -80,8 +80,12 @@ static int bnxt_hwrm_nvm_req(struct bnxt
 		memcpy(buf, data_addr, bytesize);
 
 	dma_free_coherent(&bp->pdev->dev, bytesize, data_addr, data_dma_addr);
-	if (rc)
+	if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
+		netdev_err(bp->dev, "PF does not have admin privileges to modify NVM config\n");
+		return -EACCES;
+	} else if (rc) {
 		return -EIO;
+	}
 	return 0;
 }