> The return value is never checked by its sole caller and the speed
> validation duplicates a check higher up the call stack.  Convert to
> void and remove the dead code.
> 
> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
> Signed-off-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>

Acked-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>

> ---
>  drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 10 +---------
>  1 file changed, 1 insertion(+), 9 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> index ac7d6d3e205a1ab5b391def879d6f1033a0961b6..44270c25d874f72e7f971757fec659d36468c315 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> @@ -371,9 +371,8 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
>  	return 0;
>  }
>  
> -static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed)
> +static void ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed)
>  {
> -	struct device *dev = &ethqos->pdev->dev;
>  	unsigned int prg_rclk_dly, loopback;
>  	unsigned int phase_shift;
>  
> @@ -384,11 +383,6 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed)
>  	/* Select RGMII, write 0 to interface select */
>  	rgmii_clrmask(ethqos, RGMII_CONFIG_INTF_SEL, RGMII_IO_MACRO_CONFIG);
>  
> -	if (speed != SPEED_1000 && speed != SPEED_100 && speed != SPEED_10) {
> -		dev_err(dev, "Invalid speed %d\n", speed);
> -		return -EINVAL;
> -	}
> -
>  	rgmii_setmask(ethqos, RGMII_CONFIG_DDR_MODE, RGMII_IO_MACRO_CONFIG);
>  
>  	if (speed == SPEED_1000) {
> @@ -479,8 +473,6 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed)
>  
>  	rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN, loopback,
>  		      RGMII_IO_MACRO_CONFIG);
> -
> -	return 0;
>  }
>  
>  static void ethqos_fix_mac_speed_rgmii(void *bsp_priv,
> 
> -- 
> 2.34.1
> 
>