RE: [PATCH net-next v4 3/3] net: Convert some ethtool_sprintf() to ethtool_puts()

["Kiyanovski, Arthur" <akiyano@amazon.com>]

> -----Original Message-----
> From: Justin Stitt <justinstitt@google.com>
> Sent: Thursday, November 2, 2023 8:56 PM
> To: David S. Miller <davem@davemloft.net>; Eric Dumazet
> <edumazet@google.com>; Jakub Kicinski <kuba@kernel.org>; Paolo Abeni
> <pabeni@redhat.com>; Agroskin, Shay <shayagr@amazon.com>; Kiyanovski,
> Arthur <akiyano@amazon.com>; Arinzon, David <darinzon@amazon.com>;
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> <brett.creeley@amd.com>; drivers@pensando.io; K. Y. Srinivasan
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> Wu <jiawenwu@trustnetic.com>; Mengyuan Lou <mengyuanlou@net-
> swift.com>; Heiner Kallweit <hkallweit1@gmail.com>; Russell King
> <linux@armlinux.org.uk>; Alexei Starovoitov <ast@kernel.org>; Daniel
> Borkmann <daniel@iogearbox.net>; Jesper Dangaard Brouer
> <hawk@kernel.org>; John Fastabend <john.fastabend@gmail.com>
> Cc: linux-kernel@vger.kernel.org; netdev@vger.kernel.org; Nick Desaulniers
> <ndesaulniers@google.com>; Nathan Chancellor <nathan@kernel.org>; Kees
> Cook <keescook@chromium.org>; intel-wired-lan@lists.osuosl.org; oss-
> drivers@corigine.com; linux-hyperv@vger.kernel.org; linux-arm-
> kernel@lists.infradead.org; linux-mediatek@lists.infradead.org;
> bpf@vger.kernel.org; Justin Stitt <justinstitt@google.com>
> Subject: [EXTERNAL] [PATCH net-next v4 3/3] net: Convert some
> ethtool_sprintf() to ethtool_puts()
> 
> CAUTION: This email originated from outside of the organization. Do not click
> links or open attachments unless you can confirm the sender and know the
> content is safe.
> 
> 
> 
> This patch converts some basic cases of ethtool_sprintf() to ethtool_puts().
> 
> The conversions are used in cases where ethtool_sprintf() was being used with
> just two arguments:
> |       ethtool_sprintf(&data, buffer[i].name);
> or when it's used with format string: "%s"
> |       ethtool_sprintf(&data, "%s", buffer[i].name);
> which both now become:
> |       ethtool_puts(&data, buffer[i].name);
> 
> Signed-off-by: Justin Stitt <justinstitt@google.com>
> ---
>  drivers/net/dsa/lantiq_gswip.c                     |  2 +-
>  drivers/net/dsa/mt7530.c                           |  2 +-
>  drivers/net/dsa/qca/qca8k-common.c                 |  2 +-
>  drivers/net/dsa/realtek/rtl8365mb.c                |  2 +-
>  drivers/net/dsa/realtek/rtl8366-core.c             |  2 +-
>  drivers/net/dsa/vitesse-vsc73xx-core.c             |  8 +--
>  drivers/net/ethernet/amazon/ena/ena_ethtool.c      |  4 +-
>  drivers/net/ethernet/brocade/bna/bnad_ethtool.c    |  2 +-
>  drivers/net/ethernet/freescale/fec_main.c          |  4 +-
>  .../net/ethernet/fungible/funeth/funeth_ethtool.c  |  8 +--
> drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c |  2 +-
>  .../net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c    |  2 +-
>  drivers/net/ethernet/hisilicon/hns/hns_ethtool.c   | 65 +++++++++++-----------
>  drivers/net/ethernet/intel/i40e/i40e_ethtool.c     |  6 +-
>  drivers/net/ethernet/intel/iavf/iavf_ethtool.c     |  3 +-
>  drivers/net/ethernet/intel/ice/ice_ethtool.c       |  9 +--
>  drivers/net/ethernet/intel/idpf/idpf_ethtool.c     |  2 +-
>  drivers/net/ethernet/intel/igb/igb_ethtool.c       |  6 +-
>  drivers/net/ethernet/intel/igc/igc_ethtool.c       |  6 +-
>  drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c   |  5 +-
>  .../net/ethernet/microchip/sparx5/sparx5_ethtool.c |  2 +-
>  .../net/ethernet/netronome/nfp/nfp_net_ethtool.c   | 44 +++++++--------
>  drivers/net/ethernet/pensando/ionic/ionic_stats.c  |  4 +-
>  drivers/net/ethernet/wangxun/libwx/wx_ethtool.c    |  2 +-
>  drivers/net/hyperv/netvsc_drv.c                    |  4 +-
>  drivers/net/phy/nxp-tja11xx.c                      |  2 +-
>  drivers/net/phy/smsc.c                             |  2 +-
>  drivers/net/vmxnet3/vmxnet3_ethtool.c              | 10 ++--
>  28 files changed, 100 insertions(+), 112 deletions(-)
> 
> diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
> index 9c185c9f0963..05a017c9ef3d 100644
> --- a/drivers/net/dsa/lantiq_gswip.c
> +++ b/drivers/net/dsa/lantiq_gswip.c
> @@ -1759,7 +1759,7 @@ static void gswip_get_strings(struct dsa_switch *ds,
> int port, u32 stringset,
>                 return;
> 
>         for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++)
> -               ethtool_sprintf(&data, "%s", gswip_rmon_cnt[i].name);
> +               ethtool_puts(&data, gswip_rmon_cnt[i].name);
>  }
> 
>  static u32 gswip_bcm_ram_entry_read(struct gswip_priv *priv, u32 table, diff --
> git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index
> d27c6b70a2f6..391c4dbdff42 100644
> --- a/drivers/net/dsa/mt7530.c
> +++ b/drivers/net/dsa/mt7530.c
> @@ -836,7 +836,7 @@ mt7530_get_strings(struct dsa_switch *ds, int port, u32
> stringset,
>                 return;
> 
>         for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
> -               ethtool_sprintf(&data, "%s", mt7530_mib[i].name);
> +               ethtool_puts(&data, mt7530_mib[i].name);
>  }
> 
>  static void
> diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-
> common.c
> index 9243eff8918d..2358cd399c7e 100644
> --- a/drivers/net/dsa/qca/qca8k-common.c
> +++ b/drivers/net/dsa/qca/qca8k-common.c
> @@ -487,7 +487,7 @@ void qca8k_get_strings(struct dsa_switch *ds, int port,
> u32 stringset,
>                 return;
> 
>         for (i = 0; i < priv->info->mib_count; i++)
> -               ethtool_sprintf(&data, "%s", ar8327_mib[i].name);
> +               ethtool_puts(&data, ar8327_mib[i].name);
>  }
> 
>  void qca8k_get_ethtool_stats(struct dsa_switch *ds, int port, diff --git
> a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
> index 0875e4fc9f57..b072045eb154 100644
> --- a/drivers/net/dsa/realtek/rtl8365mb.c
> +++ b/drivers/net/dsa/realtek/rtl8365mb.c
> @@ -1303,7 +1303,7 @@ static void rtl8365mb_get_strings(struct dsa_switch
> *ds, int port, u32 stringset
> 
>         for (i = 0; i < RTL8365MB_MIB_END; i++) {
>                 struct rtl8365mb_mib_counter *mib = &rtl8365mb_mib_counters[i];
> -               ethtool_sprintf(&data, "%s", mib->name);
> +               ethtool_puts(&data, mib->name);
>         }
>  }
> 
> diff --git a/drivers/net/dsa/realtek/rtl8366-core.c
> b/drivers/net/dsa/realtek/rtl8366-core.c
> index 82e267b8fddb..59f98d2c8769 100644
> --- a/drivers/net/dsa/realtek/rtl8366-core.c
> +++ b/drivers/net/dsa/realtek/rtl8366-core.c
> @@ -401,7 +401,7 @@ void rtl8366_get_strings(struct dsa_switch *ds, int port,
> u32 stringset,
>                 return;
> 
>         for (i = 0; i < priv->num_mib_counters; i++)
> -               ethtool_sprintf(&data, "%s", priv->mib_counters[i].name);
> +               ethtool_puts(&data, priv->mib_counters[i].name);
>  }
>  EXPORT_SYMBOL_GPL(rtl8366_get_strings);
> 
> diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-
> vsc73xx-core.c
> index e6f29e4e508c..dd50502e2122 100644
> --- a/drivers/net/dsa/vitesse-vsc73xx-core.c
> +++ b/drivers/net/dsa/vitesse-vsc73xx-core.c
> @@ -949,7 +949,7 @@ static void vsc73xx_get_strings(struct dsa_switch *ds,
> int port, u32 stringset,
>         indices[5] = ((val >> 26) & 0x1f); /* TX counter 2 */
> 
>         /* The first counters is the RX octets */
> -       ethtool_sprintf(&buf, "RxEtherStatsOctets");
> +       ethtool_puts(&buf, "RxEtherStatsOctets");
> 
>         /* Each port supports recording 3 RX counters and 3 TX counters,
>          * figure out what counters we use in this set-up and return the @@ -959,15
> +959,15 @@ static void vsc73xx_get_strings(struct dsa_switch *ds, int port, u32
> stringset,
>          */
>         for (i = 0; i < 3; i++) {
>                 cnt = vsc73xx_find_counter(vsc, indices[i], false);
> -               ethtool_sprintf(&buf, "%s", cnt ? cnt->name : "");
> +               ethtool_puts(&buf, cnt ? cnt->name : "");
>         }
> 
>         /* TX stats begins with the number of TX octets */
> -       ethtool_sprintf(&buf, "TxEtherStatsOctets");
> +       ethtool_puts(&buf, "TxEtherStatsOctets");
> 
>         for (i = 3; i < 6; i++) {
>                 cnt = vsc73xx_find_counter(vsc, indices[i], true);
> -               ethtool_sprintf(&buf, "%s", cnt ? cnt->name : "");
> +               ethtool_puts(&buf, cnt ? cnt->name : "");
> 
>         }
>  }
> diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
> b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
> index d671df4b76bc..e3ef081aa42b 100644
> --- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
> +++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
> @@ -299,13 +299,13 @@ static void ena_get_strings(struct ena_adapter
> *adapter,
> 
>         for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
>                 ena_stats = &ena_stats_global_strings[i];
> -               ethtool_sprintf(&data, ena_stats->name);
> +               ethtool_puts(&data, ena_stats->name);
>         }
> 
>         if (eni_stats_needed) {
>                 for (i = 0; i < ENA_STATS_ARRAY_ENI(adapter); i++) {
>                         ena_stats = &ena_stats_eni_strings[i];
> -                       ethtool_sprintf(&data, ena_stats->name);
> +                       ethtool_puts(&data, ena_stats->name);
>                 }
>         }
> 
> diff --git a/drivers/net/ethernet/brocade/bna/bnad_ethtool.c
> b/drivers/net/ethernet/brocade/bna/bnad_ethtool.c
> index df10edff5603..d1ad6c9f8140 100644
> --- a/drivers/net/ethernet/brocade/bna/bnad_ethtool.c
> +++ b/drivers/net/ethernet/brocade/bna/bnad_ethtool.c
> @@ -608,7 +608,7 @@ bnad_get_strings(struct net_device *netdev, u32
> stringset, u8 *string)
> 
>         for (i = 0; i < BNAD_ETHTOOL_STATS_NUM; i++) {
>                 BUG_ON(!(strlen(bnad_net_stats_strings[i]) < ETH_GSTRING_LEN));
> -               ethtool_sprintf(&string, bnad_net_stats_strings[i]);
> +               ethtool_puts(&string, bnad_net_stats_strings[i]);
>         }
> 
>         bmap = bna_tx_rid_mask(&bnad->bna); diff --git
> a/drivers/net/ethernet/freescale/fec_main.c
> b/drivers/net/ethernet/freescale/fec_main.c
> index 032c15b541ff..b53554225945 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -2864,10 +2864,10 @@ static void fec_enet_get_strings(struct net_device
> *netdev,
>         switch (stringset) {
>         case ETH_SS_STATS:
>                 for (i = 0; i < ARRAY_SIZE(fec_stats); i++) {
> -                       ethtool_sprintf(&data, "%s", fec_stats[i].name);
> +                       ethtool_puts(&data, fec_stats[i].name);
>                 }
>                 for (i = 0; i < ARRAY_SIZE(fec_xdp_stat_strs); i++) {
> -                       ethtool_sprintf(&data, "%s", fec_xdp_stat_strs[i]);
> +                       ethtool_puts(&data, fec_xdp_stat_strs[i]);
>                 }
>                 page_pool_ethtool_stats_get_strings(data);
> 
> diff --git a/drivers/net/ethernet/fungible/funeth/funeth_ethtool.c
> b/drivers/net/ethernet/fungible/funeth/funeth_ethtool.c
> index 31aa185f4d17..091c93bd7587 100644
> --- a/drivers/net/ethernet/fungible/funeth/funeth_ethtool.c
> +++ b/drivers/net/ethernet/fungible/funeth/funeth_ethtool.c
> @@ -655,7 +655,7 @@ static void fun_get_strings(struct net_device *netdev,
> u32 sset, u8 *data)
>                                                 i);
>                 }
>                 for (j = 0; j < ARRAY_SIZE(txq_stat_names); j++)
> -                       ethtool_sprintf(&p, txq_stat_names[j]);
> +                       ethtool_puts(&p, txq_stat_names[j]);
> 
>                 for (i = 0; i < fp->num_xdpqs; i++) {
>                         for (j = 0; j < ARRAY_SIZE(xdpq_stat_names); j++) @@ -663,7
> +663,7 @@ static void fun_get_strings(struct net_device *netdev, u32 sset, u8
> *data)
>                                                 xdpq_stat_names[j], i);
>                 }
>                 for (j = 0; j < ARRAY_SIZE(xdpq_stat_names); j++)
> -                       ethtool_sprintf(&p, xdpq_stat_names[j]);
> +                       ethtool_puts(&p, xdpq_stat_names[j]);
> 
>                 for (i = 0; i < netdev->real_num_rx_queues; i++) {
>                         for (j = 0; j < ARRAY_SIZE(rxq_stat_names); j++) @@ -671,10
> +671,10 @@ static void fun_get_strings(struct net_device *netdev, u32 sset, u8
> *data)
>                                                 i);
>                 }
>                 for (j = 0; j < ARRAY_SIZE(rxq_stat_names); j++)
> -                       ethtool_sprintf(&p, rxq_stat_names[j]);
> +                       ethtool_puts(&p, rxq_stat_names[j]);
> 
>                 for (j = 0; j < ARRAY_SIZE(tls_stat_names); j++)
> -                       ethtool_sprintf(&p, tls_stat_names[j]);
> +                       ethtool_puts(&p, tls_stat_names[j]);
>                 break;
>         default:
>                 break;
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
> b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
> index 8f391e2adcc0..bdb7afaabdd0 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
> @@ -678,7 +678,7 @@ static void hns_gmac_get_strings(u32 stringset, u8
> *data)
>                 return;
> 
>         for (i = 0; i < ARRAY_SIZE(g_gmac_stats_string); i++)
> -               ethtool_sprintf(&buff, g_gmac_stats_string[i].desc);
> +               ethtool_puts(&buff, g_gmac_stats_string[i].desc);
>  }
> 
>  static int hns_gmac_get_sset_count(int stringset) diff --git
> a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
> b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
> index fc26ffaae620..c58833eb4830 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
> @@ -752,7 +752,7 @@ static void hns_xgmac_get_strings(u32 stringset, u8
> *data)
>                 return;
> 
>         for (i = 0; i < ARRAY_SIZE(g_xgmac_stats_string); i++)
> -               ethtool_sprintf(&buff, g_xgmac_stats_string[i].desc);
> +               ethtool_puts(&buff, g_xgmac_stats_string[i].desc);
>  }
> 
>  /**
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
> b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
> index b54f3706fb97..fe40cceb0f79 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
> @@ -912,42 +912,41 @@ static void hns_get_strings(struct net_device *netdev,
> u32 stringset, u8 *data)
> 
>         if (stringset == ETH_SS_TEST) {
>                 if (priv->ae_handle->phy_if != PHY_INTERFACE_MODE_XGMII)
> -                       ethtool_sprintf(&buff,
> -                                       hns_nic_test_strs[MAC_INTERNALLOOP_MAC]);
> -               ethtool_sprintf(&buff,
> -                               hns_nic_test_strs[MAC_INTERNALLOOP_SERDES]);
> +                       ethtool_puts(&buff,
> +                                    hns_nic_test_strs[MAC_INTERNALLOOP_MAC]);
> +               ethtool_puts(&buff,
> + hns_nic_test_strs[MAC_INTERNALLOOP_SERDES]);
>                 if ((netdev->phydev) && (!netdev->phydev->is_c45))
> -                       ethtool_sprintf(&buff,
> -                                       hns_nic_test_strs[MAC_INTERNALLOOP_PHY]);
> +                       ethtool_puts(&buff,
> +
> + hns_nic_test_strs[MAC_INTERNALLOOP_PHY]);
> 
>         } else {
> -               ethtool_sprintf(&buff, "rx_packets");
> -               ethtool_sprintf(&buff, "tx_packets");
> -               ethtool_sprintf(&buff, "rx_bytes");
> -               ethtool_sprintf(&buff, "tx_bytes");
> -               ethtool_sprintf(&buff, "rx_errors");
> -               ethtool_sprintf(&buff, "tx_errors");
> -               ethtool_sprintf(&buff, "rx_dropped");
> -               ethtool_sprintf(&buff, "tx_dropped");
> -               ethtool_sprintf(&buff, "multicast");
> -               ethtool_sprintf(&buff, "collisions");
> -               ethtool_sprintf(&buff, "rx_over_errors");
> -               ethtool_sprintf(&buff, "rx_crc_errors");
> -               ethtool_sprintf(&buff, "rx_frame_errors");
> -               ethtool_sprintf(&buff, "rx_fifo_errors");
> -               ethtool_sprintf(&buff, "rx_missed_errors");
> -               ethtool_sprintf(&buff, "tx_aborted_errors");
> -               ethtool_sprintf(&buff, "tx_carrier_errors");
> -               ethtool_sprintf(&buff, "tx_fifo_errors");
> -               ethtool_sprintf(&buff, "tx_heartbeat_errors");
> -               ethtool_sprintf(&buff, "rx_length_errors");
> -               ethtool_sprintf(&buff, "tx_window_errors");
> -               ethtool_sprintf(&buff, "rx_compressed");
> -               ethtool_sprintf(&buff, "tx_compressed");
> -               ethtool_sprintf(&buff, "netdev_rx_dropped");
> -               ethtool_sprintf(&buff, "netdev_tx_dropped");
> -
> -               ethtool_sprintf(&buff, "netdev_tx_timeout");
> +               ethtool_puts(&buff, "rx_packets");
> +               ethtool_puts(&buff, "tx_packets");
> +               ethtool_puts(&buff, "rx_bytes");
> +               ethtool_puts(&buff, "tx_bytes");
> +               ethtool_puts(&buff, "rx_errors");
> +               ethtool_puts(&buff, "tx_errors");
> +               ethtool_puts(&buff, "rx_dropped");
> +               ethtool_puts(&buff, "tx_dropped");
> +               ethtool_puts(&buff, "multicast");
> +               ethtool_puts(&buff, "collisions");
> +               ethtool_puts(&buff, "rx_over_errors");
> +               ethtool_puts(&buff, "rx_crc_errors");
> +               ethtool_puts(&buff, "rx_frame_errors");
> +               ethtool_puts(&buff, "rx_fifo_errors");
> +               ethtool_puts(&buff, "rx_missed_errors");
> +               ethtool_puts(&buff, "tx_aborted_errors");
> +               ethtool_puts(&buff, "tx_carrier_errors");
> +               ethtool_puts(&buff, "tx_fifo_errors");
> +               ethtool_puts(&buff, "tx_heartbeat_errors");
> +               ethtool_puts(&buff, "rx_length_errors");
> +               ethtool_puts(&buff, "tx_window_errors");
> +               ethtool_puts(&buff, "rx_compressed");
> +               ethtool_puts(&buff, "tx_compressed");
> +               ethtool_puts(&buff, "netdev_rx_dropped");
> +               ethtool_puts(&buff, "netdev_tx_dropped");
> +
> +               ethtool_puts(&buff, "netdev_tx_timeout");
> 
>                 h->dev->ops->get_strings(h, stringset, buff);
>         }
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> index fd7163128c4d..79c3e7968a85 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> @@ -2514,13 +2514,11 @@ static void i40e_get_priv_flag_strings(struct
> net_device *netdev, u8 *data)
>         u8 *p = data;
> 
>         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
> -               ethtool_sprintf(&p, "%s",
> -                               i40e_gstrings_priv_flags[i].flag_string);
> +               ethtool_puts(&p,
> + i40e_gstrings_priv_flags[i].flag_string);
>         if (pf->hw.pf_id != 0)
>                 return;
>         for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
> -               ethtool_sprintf(&p, "%s",
> -                               i40e_gl_gstrings_priv_flags[i].flag_string);
> +               ethtool_puts(&p,
> + i40e_gl_gstrings_priv_flags[i].flag_string);
>  }
> 
>  static void i40e_get_strings(struct net_device *netdev, u32 stringset, diff --git
> a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
> b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
> index 6f236d1a6444..75d433dc1974 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
> @@ -396,8 +396,7 @@ static void iavf_get_priv_flag_strings(struct net_device
> *netdev, u8 *data)
>         unsigned int i;
> 
>         for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++)
> -               ethtool_sprintf(&data, "%s",
> -                               iavf_gstrings_priv_flags[i].flag_string);
> +               ethtool_puts(&data,
> + iavf_gstrings_priv_flags[i].flag_string);
>  }
> 
>  /**
> diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c
> b/drivers/net/ethernet/intel/ice/ice_ethtool.c
> index a34083567e6f..98c9317581e0 100644
> --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
> +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
> @@ -1142,8 +1142,7 @@ __ice_get_strings(struct net_device *netdev, u32
> stringset, u8 *data,
>         switch (stringset) {
>         case ETH_SS_STATS:
>                 for (i = 0; i < ICE_VSI_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       ice_gstrings_vsi_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + ice_gstrings_vsi_stats[i].stat_string);
> 
>                 if (ice_is_port_repr_netdev(netdev))
>                         return;
> @@ -1162,8 +1161,7 @@ __ice_get_strings(struct net_device *netdev, u32
> stringset, u8 *data,
>                         return;
> 
>                 for (i = 0; i < ICE_PF_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       ice_gstrings_pf_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + ice_gstrings_pf_stats[i].stat_string);
> 
>                 for (i = 0; i < ICE_MAX_USER_PRIORITY; i++) {
>                         ethtool_sprintf(&p, "tx_priority_%u_xon.nic", i); @@ -1179,8
> +1177,7 @@ __ice_get_strings(struct net_device *netdev, u32 stringset, u8
> *data,
>                 break;
>         case ETH_SS_PRIV_FLAGS:
>                 for (i = 0; i < ICE_PRIV_FLAG_ARRAY_SIZE; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       ice_gstrings_priv_flags[i].name);
> +                       ethtool_puts(&p,
> + ice_gstrings_priv_flags[i].name);
>                 break;
>         default:
>                 break;
> diff --git a/drivers/net/ethernet/intel/idpf/idpf_ethtool.c
> b/drivers/net/ethernet/intel/idpf/idpf_ethtool.c
> index 52ea38669f85..bf58989a573e 100644
> --- a/drivers/net/ethernet/intel/idpf/idpf_ethtool.c
> +++ b/drivers/net/ethernet/intel/idpf/idpf_ethtool.c
> @@ -532,7 +532,7 @@ static void idpf_add_stat_strings(u8 **p, const struct
> idpf_stats *stats,
>         unsigned int i;
> 
>         for (i = 0; i < size; i++)
> -               ethtool_sprintf(p, "%s", stats[i].stat_string);
> +               ethtool_puts(p, stats[i].stat_string);
>  }
> 
>  /**
> diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> index 16d2a55d5e17..89dac7b215e5 100644
> --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> @@ -2356,11 +2356,9 @@ static void igb_get_strings(struct net_device
> *netdev, u32 stringset, u8 *data)
>                 break;
>         case ETH_SS_STATS:
>                 for (i = 0; i < IGB_GLOBAL_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       igb_gstrings_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + igb_gstrings_stats[i].stat_string);
>                 for (i = 0; i < IGB_NETDEV_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       igb_gstrings_net_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + igb_gstrings_net_stats[i].stat_string);
>                 for (i = 0; i < adapter->num_tx_queues; i++) {
>                         ethtool_sprintf(&p, "tx_queue_%u_packets", i);
>                         ethtool_sprintf(&p, "tx_queue_%u_bytes", i); diff --git
> a/drivers/net/ethernet/intel/igc/igc_ethtool.c
> b/drivers/net/ethernet/intel/igc/igc_ethtool.c
> index 785eaa8e0ba8..2ed92bf34059 100644
> --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
> +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c
> @@ -773,11 +773,9 @@ static void igc_ethtool_get_strings(struct net_device
> *netdev, u32 stringset,
>                 break;
>         case ETH_SS_STATS:
>                 for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       igc_gstrings_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + igc_gstrings_stats[i].stat_string);
>                 for (i = 0; i < IGC_NETDEV_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       igc_gstrings_net_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + igc_gstrings_net_stats[i].stat_string);
>                 for (i = 0; i < adapter->num_tx_queues; i++) {
>                         ethtool_sprintf(&p, "tx_queue_%u_packets", i);
>                         ethtool_sprintf(&p, "tx_queue_%u_bytes", i); diff --git
> a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> index 4dd897806fa5..dd722b0381e0 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> @@ -1413,12 +1413,11 @@ static void ixgbe_get_strings(struct net_device
> *netdev, u32 stringset,
>         switch (stringset) {
>         case ETH_SS_TEST:
>                 for (i = 0; i < IXGBE_TEST_LEN; i++)
> -                       ethtool_sprintf(&p, "%s", ixgbe_gstrings_test[i]);
> +                       ethtool_puts(&p, ixgbe_gstrings_test[i]);
>                 break;
>         case ETH_SS_STATS:
>                 for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, "%s",
> -                                       ixgbe_gstrings_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + ixgbe_gstrings_stats[i].stat_string);
>                 for (i = 0; i < netdev->num_tx_queues; i++) {
>                         ethtool_sprintf(&p, "tx_queue_%u_packets", i);
>                         ethtool_sprintf(&p, "tx_queue_%u_bytes", i); diff --git
> a/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c
> b/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c
> index 37d2584b48a7..a06dc5a9b355 100644
> --- a/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c
> +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c
> @@ -1012,7 +1012,7 @@ static void sparx5_get_sset_strings(struct net_device
> *ndev, u32 sset, u8 *data)
>                 return;
> 
>         for (idx = 0; idx < sparx5->num_ethtool_stats; idx++)
> -               ethtool_sprintf(&data, "%s", sparx5->stats_layout[idx]);
> +               ethtool_puts(&data, sparx5->stats_layout[idx]);
>  }
> 
>  static void sparx5_get_sset_data(struct net_device *ndev, diff --git
> a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> index e75cbb287625..1636ce61a3c0 100644
> --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> @@ -800,7 +800,7 @@ static void nfp_get_self_test_strings(struct net_device
> *netdev, u8 *data)
> 
>         for (i = 0; i < NFP_TEST_TOTAL_NUM; i++)
>                 if (nfp_self_test[i].is_supported(netdev))
> -                       ethtool_sprintf(&data, nfp_self_test[i].name);
> +                       ethtool_puts(&data, nfp_self_test[i].name);
>  }
> 
>  static int nfp_get_self_test_count(struct net_device *netdev) @@ -852,24
> +852,24 @@ static u8 *nfp_vnic_get_sw_stats_strings(struct net_device
> *netdev, u8 *data)
>                 ethtool_sprintf(&data, "rvec_%u_tx_busy", i);
>         }
> 
> -       ethtool_sprintf(&data, "hw_rx_csum_ok");
> -       ethtool_sprintf(&data, "hw_rx_csum_inner_ok");
> -       ethtool_sprintf(&data, "hw_rx_csum_complete");
> -       ethtool_sprintf(&data, "hw_rx_csum_err");
> -       ethtool_sprintf(&data, "rx_replace_buf_alloc_fail");
> -       ethtool_sprintf(&data, "rx_tls_decrypted_packets");
> -       ethtool_sprintf(&data, "hw_tx_csum");
> -       ethtool_sprintf(&data, "hw_tx_inner_csum");
> -       ethtool_sprintf(&data, "tx_gather");
> -       ethtool_sprintf(&data, "tx_lso");
> -       ethtool_sprintf(&data, "tx_tls_encrypted_packets");
> -       ethtool_sprintf(&data, "tx_tls_ooo");
> -       ethtool_sprintf(&data, "tx_tls_drop_no_sync_data");
> -
> -       ethtool_sprintf(&data, "hw_tls_no_space");
> -       ethtool_sprintf(&data, "rx_tls_resync_req_ok");
> -       ethtool_sprintf(&data, "rx_tls_resync_req_ign");
> -       ethtool_sprintf(&data, "rx_tls_resync_sent");
> +       ethtool_puts(&data, "hw_rx_csum_ok");
> +       ethtool_puts(&data, "hw_rx_csum_inner_ok");
> +       ethtool_puts(&data, "hw_rx_csum_complete");
> +       ethtool_puts(&data, "hw_rx_csum_err");
> +       ethtool_puts(&data, "rx_replace_buf_alloc_fail");
> +       ethtool_puts(&data, "rx_tls_decrypted_packets");
> +       ethtool_puts(&data, "hw_tx_csum");
> +       ethtool_puts(&data, "hw_tx_inner_csum");
> +       ethtool_puts(&data, "tx_gather");
> +       ethtool_puts(&data, "tx_lso");
> +       ethtool_puts(&data, "tx_tls_encrypted_packets");
> +       ethtool_puts(&data, "tx_tls_ooo");
> +       ethtool_puts(&data, "tx_tls_drop_no_sync_data");
> +
> +       ethtool_puts(&data, "hw_tls_no_space");
> +       ethtool_puts(&data, "rx_tls_resync_req_ok");
> +       ethtool_puts(&data, "rx_tls_resync_req_ign");
> +       ethtool_puts(&data, "rx_tls_resync_sent");
> 
>         return data;
>  }
> @@ -943,13 +943,13 @@ nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int
> num_vecs, bool repr)
>         swap_off = repr * NN_ET_SWITCH_STATS_LEN;
> 
>         for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++)
> -               ethtool_sprintf(&data, nfp_net_et_stats[i + swap_off].name);
> +               ethtool_puts(&data, nfp_net_et_stats[i +
> + swap_off].name);
> 
>         for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2;
> i++)
> -               ethtool_sprintf(&data, nfp_net_et_stats[i - swap_off].name);
> +               ethtool_puts(&data, nfp_net_et_stats[i -
> + swap_off].name);
> 
>         for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN;
> i++)
> -               ethtool_sprintf(&data, nfp_net_et_stats[i].name);
> +               ethtool_puts(&data, nfp_net_et_stats[i].name);
> 
>         for (i = 0; i < num_vecs; i++) {
>                 ethtool_sprintf(&data, "rxq_%u_pkts", i); diff --git
> a/drivers/net/ethernet/pensando/ionic/ionic_stats.c
> b/drivers/net/ethernet/pensando/ionic/ionic_stats.c
> index 9859a4432985..1f6022fb7679 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_stats.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_stats.c
> @@ -258,10 +258,10 @@ static void ionic_sw_stats_get_strings(struct ionic_lif
> *lif, u8 **buf)
>         int i, q_num;
> 
>         for (i = 0; i < IONIC_NUM_LIF_STATS; i++)
> -               ethtool_sprintf(buf, ionic_lif_stats_desc[i].name);
> +               ethtool_puts(buf, ionic_lif_stats_desc[i].name);
> 
>         for (i = 0; i < IONIC_NUM_PORT_STATS; i++)
> -               ethtool_sprintf(buf, ionic_port_stats_desc[i].name);
> +               ethtool_puts(buf, ionic_port_stats_desc[i].name);
> 
>         for (q_num = 0; q_num < MAX_Q(lif); q_num++)
>                 ionic_sw_stats_get_tx_strings(lif, buf, q_num); diff --git
> a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c
> b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c
> index ddc5f6d20b9c..6e9e5f01c152 100644
> --- a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c
> +++ b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c
> @@ -75,7 +75,7 @@ void wx_get_strings(struct net_device *netdev, u32
> stringset, u8 *data)
>         switch (stringset) {
>         case ETH_SS_STATS:
>                 for (i = 0; i < WX_GLOBAL_STATS_LEN; i++)
> -                       ethtool_sprintf(&p, wx_gstrings_stats[i].stat_string);
> +                       ethtool_puts(&p,
> + wx_gstrings_stats[i].stat_string);
>                 for (i = 0; i < netdev->num_tx_queues; i++) {
>                         ethtool_sprintf(&p, "tx_queue_%u_packets", i);
>                         ethtool_sprintf(&p, "tx_queue_%u_bytes", i); diff --git
> a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index
> 3ba3c8fb28a5..cbd9405fc2f3 100644
> --- a/drivers/net/hyperv/netvsc_drv.c
> +++ b/drivers/net/hyperv/netvsc_drv.c
> @@ -1582,10 +1582,10 @@ static void netvsc_get_strings(struct net_device
> *dev, u32 stringset, u8 *data)
>         switch (stringset) {
>         case ETH_SS_STATS:
>                 for (i = 0; i < ARRAY_SIZE(netvsc_stats); i++)
> -                       ethtool_sprintf(&p, netvsc_stats[i].name);
> +                       ethtool_puts(&p, netvsc_stats[i].name);
> 
>                 for (i = 0; i < ARRAY_SIZE(vf_stats); i++)
> -                       ethtool_sprintf(&p, vf_stats[i].name);
> +                       ethtool_puts(&p, vf_stats[i].name);
> 
>                 for (i = 0; i < nvdev->num_chn; i++) {
>                         ethtool_sprintf(&p, "tx_queue_%u_packets", i); diff --git
> a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c index
> a71399965142..2c263ae44b4f 100644
> --- a/drivers/net/phy/nxp-tja11xx.c
> +++ b/drivers/net/phy/nxp-tja11xx.c
> @@ -415,7 +415,7 @@ static void tja11xx_get_strings(struct phy_device
> *phydev, u8 *data)
>         int i;
> 
>         for (i = 0; i < ARRAY_SIZE(tja11xx_hw_stats); i++)
> -               ethtool_sprintf(&data, "%s", tja11xx_hw_stats[i].string);
> +               ethtool_puts(&data, tja11xx_hw_stats[i].string);
>  }
> 
>  static void tja11xx_get_stats(struct phy_device *phydev, diff --git
> a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c index
> 1c7306a1af13..150aea7c9c36 100644
> --- a/drivers/net/phy/smsc.c
> +++ b/drivers/net/phy/smsc.c
> @@ -508,7 +508,7 @@ static void smsc_get_strings(struct phy_device *phydev,
> u8 *data)
>         int i;
> 
>         for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++)
> -               ethtool_sprintf(&data, "%s", smsc_hw_stats[i].string);
> +               ethtool_puts(&data, smsc_hw_stats[i].string);
>  }
> 
>  static u64 smsc_get_stat(struct phy_device *phydev, int i) diff --git
> a/drivers/net/vmxnet3/vmxnet3_ethtool.c
> b/drivers/net/vmxnet3/vmxnet3_ethtool.c
> index 98c22d7d87a2..8f5f202cde39 100644
> --- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
> +++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
> @@ -245,20 +245,20 @@ vmxnet3_get_strings(struct net_device *netdev, u32
> stringset, u8 *buf)
> 
>         for (j = 0; j < adapter->num_tx_queues; j++) {
>                 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
> -                       ethtool_sprintf(&buf, vmxnet3_tq_dev_stats[i].desc);
> +                       ethtool_puts(&buf,
> + vmxnet3_tq_dev_stats[i].desc);
>                 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
> -                       ethtool_sprintf(&buf, vmxnet3_tq_driver_stats[i].desc);
> +                       ethtool_puts(&buf,
> + vmxnet3_tq_driver_stats[i].desc);
>         }
> 
>         for (j = 0; j < adapter->num_rx_queues; j++) {
>                 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
> -                       ethtool_sprintf(&buf, vmxnet3_rq_dev_stats[i].desc);
> +                       ethtool_puts(&buf,
> + vmxnet3_rq_dev_stats[i].desc);
>                 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
> -                       ethtool_sprintf(&buf, vmxnet3_rq_driver_stats[i].desc);
> +                       ethtool_puts(&buf,
> + vmxnet3_rq_driver_stats[i].desc);
>         }
> 
>         for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
> -               ethtool_sprintf(&buf, vmxnet3_global_stats[i].desc);
> +               ethtool_puts(&buf, vmxnet3_global_stats[i].desc);
>  }
> 
>  netdev_features_t vmxnet3_fix_features(struct net_device *netdev,
> 
> --
> 2.42.0.869.gea05f2083d-goog

Thanks for submitting this.
For ENA driver

Acked-by: Arthur Kiyanovski <akiyano@amazon.com>