linux-kernel - Re: [PATCH 1/1] net:fec: buffer descriptor member variable order in IMX6

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Date:	Thu, 21 Aug 2014 14:30:12 -0500
From:	Zhi Li <lznuaa@...il.com>
To:	Zhu Yanjun <zyjzyj2000@...il.com>
Cc:	kernel list <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Zhu Yanjun <Yanjun.Zhu@...driver.com>,
	Frank Li <Frank.Li@...escale.com>
Subject: Re: [PATCH 1/1] net:fec: buffer descriptor member variable order in IMX6

On Thu, Aug 21, 2014 at 4:21 AM, Zhu Yanjun <zyjzyj2000@...il.com> wrote:
> From Reference Manual, freescale IMX6 is little endian mode. Therefore
> the first structure field is length, the second is status.
>
> CC: David Miller <davem@...emloft.net>
> CC: Frank Li <Frank.Li@...escale.com>
> Signed-off-by: Zhu Yanjun <Yanjun.Zhu@...driver.com>
> ---
>  drivers/net/ethernet/freescale/fec.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
> index 671d080..96a5f8a 100644
> --- a/drivers/net/ethernet/freescale/fec.h
> +++ b/drivers/net/ethernet/freescale/fec.h
> @@ -147,7 +147,8 @@
>  /*
>   *     Define the buffer descriptor structure.
>   */
> -#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
> +#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) || \
> +                       defined(CONFIG_ARCH_MX6)

CONFIG_ARCH_MXC already included CONFIG_ARCH_MX6
ARCH_MXC included whole MX serial, MX35, MX5x, MX6x.

IMX28 is special, coming from sigmatel chip.

So it is not necessary to add ARCH_MX6


Best regards
Frank Li

>  struct bufdesc {
>         unsigned short cbd_datlen;      /* Data length */
>         unsigned short cbd_sc;  /* Control and status info */
> --
> 1.9.1
>
> --
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