On Thu, 10 Sep 2020 10:42:45 +0800 Luo Jiaxing wrote:
> Fixes the following warning when using W=1 to build kernel:
>
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:3634:6: warning: variable
> ‘ret’ set but not used [-Wunused-but-set-variable]
> int ret, coe = priv->hw->rx_csum;
>
> When digging stmmac_get_rx_header_len(), dwmac4_get_rx_header_len() and
> dwxgmac2_get_rx_header_len() return 0 by default. Therefore, ret do not
> need to check the error value and can be directly deleted.
>
> Signed-off-by: Luo Jiaxing <luojiax...@huawei.com>
> ---
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 89b2b34..7e95412 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -3631,15 +3631,15 @@ static unsigned int stmmac_rx_buf1_len(struct
> stmmac_priv *priv,
> struct dma_desc *p,
> int status, unsigned int len)
> {
> - int ret, coe = priv->hw->rx_csum;
> unsigned int plen = 0, hlen = 0;
> + int coe = priv->hw->rx_csum;
>
> /* Not first descriptor, buffer is always zero */
> if (priv->sph && len)
> return 0;
>
> /* First descriptor, get split header length */
> - ret = stmmac_get_rx_header_len(priv, p, &hlen);
> + stmmac_get_rx_header_len(priv, p, &hlen);
This function should return void if there never are any errors to
report.
> if (priv->sph && hlen) {
> priv->xstats.rx_split_hdr_pkt_n++;
> return hlen;
