linux-kernel - Re: net: phy: realtek: add rtl8201f driver

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Message-ID: <518A7284.4000504@cogentembedded.com>
Date:	Wed, 08 May 2013 19:43:00 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Jongsung Kim <neidhard.kim@....com>
CC:	davem@...emloft.net, peppe.cavallaro@...com,
	chohnstaedt@...ominate.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: net: phy: realtek: add rtl8201f driver

Hello.

On 08-05-2013 14:10, Jongsung Kim wrote:

> This patch adds the minimal driver to manage the
> Realtek RTL8201F 10/100Mbps Transceivers.

> Signed-off-by: Jongsung Kim <neidhard.kim@....com>
> ---
>   drivers/net/phy/realtek.c |   60 +++++++++++++++++++++++++++++++++++++++-----
>   1 files changed, 53 insertions(+), 7 deletions(-)

> diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
> index 8e7af83..27847ca 100644
> --- a/drivers/net/phy/realtek.c
> +++ b/drivers/net/phy/realtek.c
> @@ -16,9 +16,13 @@
>   #include <linux/phy.h>
>   #include <linux/module.h>
>
> -#define RTL821x_PHYSR		0x11
> -#define RTL821x_PHYSR_DUPLEX	0x2000
> -#define RTL821x_PHYSR_SPEED	0xc000

     Removal of unused #define's is a matter of a separate cleanup patch...

> +/* page 0 register 30 - interrupt indicators and SNR display register */
> +#define RTL8201F_ISR		0x1e
> +/* page 0 register 31 - page select register */
> +#define RTL8201F_PSR		0x1f
> +/* page 7 register 19 - interrupt, WOL enable, and LEDs function register */
> +#define RTL8201F_IER		0x13
> +
>   #define RTL821x_INER		0x12
>   #define RTL821x_INER_INIT	0x6400
>   #define RTL821x_INSR		0x13
> @@ -29,6 +33,15 @@ MODULE_DESCRIPTION("Realtek PHY driver");
>   MODULE_AUTHOR("Johnson Leung");
>   MODULE_LICENSE("GPL");
>
> +static int rtl8201f_ack_interrupt(struct phy_device *phydev)
> +{
> +	int err;
> +
> +	err = phy_read(phydev, RTL8201F_ISR);

    This could be an initializer and so make the function shorter.

> +
> +	return (err < 0) ? err : 0;
> +}
> +
>   static int rtl821x_ack_interrupt(struct phy_device *phydev)
>   {
>   	int err;
[...]
> @@ -96,16 +141,16 @@ static struct phy_driver rtl8211e_driver = {
>
>   static int __init realtek_init(void)
>   {
> -	int ret;
> -
> -	ret = phy_driver_register(&rtl8211b_driver);
> -	if (ret < 0)
> +	if(phy_driver_register(&rtl8201f_driver) < 0)
> +		return -ENODEV;
> +	if(phy_driver_register(&rtl8211b_driver) < 0)

     You haven't run this patch thru scripts/checkpatch.pl -- there 
should be a space between *if* and (.

WBR, Sergei

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