netdev - Re: [PATCH] net: natsemi: fix hw address initialization for jazz and xtensa

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Date:   Tue, 30 Nov 2021 07:35:27 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Max Filippov <jcmvbkbc@...il.com>, netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH] net: natsemi: fix hw address initialization for jazz and
 xtensa

Hi Max,

On 11/30/21 06:36, Max Filippov wrote:
> Use eth_hw_addr_set function instead of writing the address directly to
> net_device::dev_addr.
> 
> Fixes: adeef3e32146 ("net: constify netdev->dev_addr")
> Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
> Cc: Randy Dunlap <rdunlap@...radead.org>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Jakub Kicinski <kuba@...nel.org>
Looks good. Thanks.

Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested

> ---
>  drivers/net/ethernet/natsemi/jazzsonic.c | 6 ++++--
>  drivers/net/ethernet/natsemi/xtsonic.c   | 6 ++++--
>  2 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/natsemi/jazzsonic.c b/drivers/net/ethernet/natsemi/jazzsonic.c
> index d74a80f010c5..3f371faeb6d0 100644
> --- a/drivers/net/ethernet/natsemi/jazzsonic.c
> +++ b/drivers/net/ethernet/natsemi/jazzsonic.c
> @@ -114,6 +114,7 @@ static int sonic_probe1(struct net_device *dev)
>  	struct sonic_local *lp = netdev_priv(dev);
>  	int err = -ENODEV;
>  	int i;
> +	unsigned char addr[ETH_ALEN];
>  
>  	if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
>  		return -EBUSY;
> @@ -143,9 +144,10 @@ static int sonic_probe1(struct net_device *dev)
>  	SONIC_WRITE(SONIC_CEP,0);
>  	for (i=0; i<3; i++) {
>  		val = SONIC_READ(SONIC_CAP0-i);
> -		dev->dev_addr[i*2] = val;
> -		dev->dev_addr[i*2+1] = val >> 8;
> +		addr[i*2] = val;
> +		addr[i*2+1] = val >> 8;
>  	}
> +	eth_hw_addr_set(dev, addr);
>  
>  	lp->dma_bitmode = SONIC_BITMODE32;
>  
> diff --git a/drivers/net/ethernet/natsemi/xtsonic.c b/drivers/net/ethernet/natsemi/xtsonic.c
> index ca4686094701..7d51bcb1b918 100644
> --- a/drivers/net/ethernet/natsemi/xtsonic.c
> +++ b/drivers/net/ethernet/natsemi/xtsonic.c
> @@ -127,6 +127,7 @@ static int __init sonic_probe1(struct net_device *dev)
>  	unsigned int base_addr = dev->base_addr;
>  	int i;
>  	int err = 0;
> +	unsigned char addr[ETH_ALEN];
>  
>  	if (!request_mem_region(base_addr, 0x100, xtsonic_string))
>  		return -EBUSY;
> @@ -163,9 +164,10 @@ static int __init sonic_probe1(struct net_device *dev)
>  
>  	for (i=0; i<3; i++) {
>  		unsigned int val = SONIC_READ(SONIC_CAP0-i);
> -		dev->dev_addr[i*2] = val;
> -		dev->dev_addr[i*2+1] = val >> 8;
> +		addr[i*2] = val;
> +		addr[i*2+1] = val >> 8;
>  	}
> +	eth_hw_addr_set(dev, addr);
>  
>  	lp->dma_bitmode = SONIC_BITMODE32;
>  
> 

-- 
~Randy