bnxt_en: Don't issue AP reset during ethtool's reset operation

[ Upstream commit 1d997801c7cc6a7f542e46d5a6bf16f893ad3fe9 ]

Only older NIC controller's firmware uses the PROC AP reset type.
Firmware on 5731X/5741X and newer chips does not support this reset
type.  When bnxt_reset() issues a series of resets, this PROC AP
reset may actually fail on these newer chips because the firmware
is not ready to accept this unsupported command yet.  Avoid this
unnecessary error by skipping this reset type on chips that don't
support it.

Fixes: 7a13240e3718 ("bnxt_en: fix ethtool_reset_flags ABI violations")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index b2d531e..89f046c 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -3727,7 +3727,7 @@ static int bnxt_reset(struct net_device *dev, u32 *flags)
                }
        }
 
-       if (req & BNXT_FW_RESET_AP) {
+       if (!BNXT_CHIP_P4_PLUS(bp) && (req & BNXT_FW_RESET_AP)) {
                /* This feature is not supported in older firmware versions */
                if (bp->hwrm_spec_code >= 0x10803) {
                        if (!bnxt_firmware_reset_ap(dev)) {