netdev - Re: [PATCH net-next] net: mvneta: Only disable mvneta

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Date:   Tue, 22 Nov 2016 17:37:47 +0100
From:   Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:     David Miller <davem@...emloft.net>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        jason@...edaemon.net, andrew@...n.ch,
        sebastian.hesselbarth@...il.com,
        thomas.petazzoni@...e-electrons.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH net-next] net: mvneta: Only disable mvneta_bm for 64-bits

Hi David,
 
 On mar., nov. 22 2016, David Miller <davem@...emloft.net> wrote:

> From: Gregory CLEMENT <gregory.clement@...e-electrons.com>
> Date: Tue, 22 Nov 2016 17:00:37 +0100
>
>> Actually only the mvneta_bm support is not 64-bits compatible.
>> The mvneta code itself can run on 64-bits architecture.
>> 
>> Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
>
> No it cannot, it emits warnings because it casts pointers to and
> from 32-bit integers.
>
> I'm not applying this.
>
> drivers/net/ethernet/marvell/mvneta.c: In function ‘mvneta_rx_refill’:
> drivers/net/ethernet/marvell/mvneta.c:1802:42: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
>   mvneta_rx_desc_fill(rx_desc, phys_addr, (u32)data);
>                                           ^
> drivers/net/ethernet/marvell/mvneta.c: In function ‘mvneta_rxq_drop_pkts’:
> drivers/net/ethernet/marvell/mvneta.c:1864:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>    void *data = (void *)rx_desc->buf_cookie;
>                 ^
> drivers/net/ethernet/marvell/mvneta.c: In function ‘mvneta_rx_swbm’:
> drivers/net/ethernet/marvell/mvneta.c:1902:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>    data = (unsigned char *)rx_desc->buf_cookie;
>           ^
> drivers/net/ethernet/marvell/mvneta.c: In function ‘mvneta_rx_hwbm’:
> drivers/net/ethernet/marvell/mvneta.c:2023:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>    data = (unsigned char *)rx_desc->buf_cookie;
>           ^

Indeed!

There was a missing patch for it that I had in my tree and I didn't
submit yet. I am bout to doing it now.

Thanks,

Gregory


-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com