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Date: Sun, 20 Sep 2020 21:08:57 -0400 From: Michael Chan <michael.chan@...adcom.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, kuba@...nel.org, Vasundhara Volam <vasundhara-v.volam@...adcom.com> Subject: [PATCH net 4/6] bnxt_en: Return -EOPNOTSUPP for ETHTOOL_GREGS on VFs. From: Vasundhara Volam <vasundhara-v.volam@...adcom.com> Debug firmware commands are not supported on VFs to read registers. This patch avoids logging unnecessary access_denied error on VFs when user calls ETHTOOL_GREGS. By returning error in get_regs_len() method on the VF, the get_regs() method will not be called. Fixes: b5d600b027eb ("bnxt_en: Add support for 'ethtool -d'") Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com> Signed-off-by: Michael Chan <michael.chan@...adcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 6c75101..fecdfd8 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -1322,6 +1322,9 @@ static int bnxt_get_regs_len(struct net_device *dev) struct bnxt *bp = netdev_priv(dev); int reg_len; + if (!BNXT_PF(bp)) + return -EOPNOTSUPP; + reg_len = BNXT_PXP_REG_LEN; if (bp->fw_cap & BNXT_FW_CAP_PCIE_STATS_SUPPORTED) -- 1.8.3.1
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