netdev - Re: [PATCH] net: fec: Silence M5272 build warnings

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Date:   Tue, 2 Feb 2021 08:27:59 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Fugang Duan <fugang.duan@....com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Greg Ungerer <gerg@...ux-m68k.org>, netdev@...r.kernel.org,
        linux-m68k@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: fec: Silence M5272 build warnings

On Tue, Feb 02, 2021 at 02:06:50PM +0100, Geert Uytterhoeven wrote:
> If CONFIG_M5272=y:
> 
>     drivers/net/ethernet/freescale/fec_main.c: In function ‘fec_restart’:
>     drivers/net/ethernet/freescale/fec_main.c:948:6: warning: unused variable ‘val’ [-Wunused-variable]
>       948 |  u32 val;
> 	  |      ^~~
>     drivers/net/ethernet/freescale/fec_main.c: In function ‘fec_get_mac’:
>     drivers/net/ethernet/freescale/fec_main.c:1667:28: warning: unused variable ‘pdata’ [-Wunused-variable]
>      1667 |  struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev);
> 	  |                            ^~~~~
> 
> Fix this by moving the variable declarations inside the existing #ifdef
> blocks.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/net/ethernet/freescale/fec_main.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
> index 9ebdb0e54291b204..3db882322b2bd3e8 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -945,7 +945,6 @@ static void
>  fec_restart(struct net_device *ndev)
>  {
>  	struct fec_enet_private *fep = netdev_priv(ndev);
> -	u32 val;
>  	u32 temp_mac[2];
>  	u32 rcntl = OPT_FRAME_SIZE | 0x04;
>  	u32 ecntl = 0x2; /* ETHEREN */
> @@ -997,7 +996,8 @@ fec_restart(struct net_device *ndev)
>  
>  #if !defined(CONFIG_M5272)
>  	if (fep->quirks & FEC_QUIRK_HAS_RACC) {
> -		val = readl(fep->hwp + FEC_RACC);
> +		u32 val = readl(fep->hwp + FEC_RACC);
> +
>  		/* align IP header */
>  		val |= FEC_RACC_SHIFT16;
>  		if (fep->csum_flags & FLAG_RX_CSUM_ENABLED)
> @@ -1664,7 +1664,6 @@ static int fec_enet_rx_napi(struct napi_struct *napi, int budget)
>  static void fec_get_mac(struct net_device *ndev)
>  {
>  	struct fec_enet_private *fep = netdev_priv(ndev);
> -	struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev);
>  	unsigned char *iap, tmpaddr[ETH_ALEN];
>  
>  	/*
> @@ -1695,6 +1694,8 @@ static void fec_get_mac(struct net_device *ndev)
>  		if (FEC_FLASHMAC)
>  			iap = (unsigned char *)FEC_FLASHMAC;
>  #else
> +		struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev);
> +
>  		if (pdata)
>  			iap = (unsigned char *)&pdata->mac;
>  #endif
> -- 
> 2.25.1
>