Re: [PATCH v3 net-next 5/5] net: dsa: lan9303: refactor lan9303_get_ethtool_stats

[Florian Fainelli]

On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> In lan9303_get_ethtool_stats: Get rid of 0x400 constant magic
> by using new lan9303_read_switch_reg() inside loop.
> Reduced scope of two variables.
> 
> Signed-off-by: Egil Hjelmeland <pri...@egil-hjelmeland.no>
> ---
>  drivers/net/dsa/lan9303-core.c | 26 ++++++++++++++++----------
>  1 file changed, 16 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
> index 6f409755ba1a..5aaa46146c27 100644
> --- a/drivers/net/dsa/lan9303-core.c
> +++ b/drivers/net/dsa/lan9303-core.c
> @@ -435,6 +435,13 @@ static int lan9303_write_switch_port(
>               chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
>  }
>  
> +static int lan9303_read_switch_port(
> +     struct lan9303 *chip, int port, u16 regnum, u32 *val)
> +{

This indentation is really funny, why not just break it up that way:

static int lan9303_read_switch_port(struct lan9303 *chip, int port
                                    u16 regnum, u32 *val)
{
}

This applies to patch 5 as well, other than that:

Reviewed-by: Florian Fainelli <f.faine...@gmail.com>

> +     return lan9303_read_switch_reg(
> +             chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
> +}
> +
>  static int lan9303_detect_phy_setup(struct lan9303 *chip)
>  {
>       int reg;
> @@ -709,19 +716,18 @@ static void lan9303_get_ethtool_stats(struct dsa_switch 
> *ds, int port,
>                                     uint64_t *data)
>  {
>       struct lan9303 *chip = ds->priv;
> -     u32 reg;
> -     unsigned int u, poff;
> -     int ret;
> -
> -     poff = port * 0x400;
> +     unsigned int u;
>  
>       for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
> -             ret = lan9303_read_switch_reg(chip,
> -                                           lan9303_mib[u].offset + poff,
> -                                           &reg);
> +             u32 reg;
> +             int ret;
> +
> +             ret = lan9303_read_switch_port(
> +                     chip, port, lan9303_mib[u].offset, &reg);
> +
>               if (ret)
> -                     dev_warn(chip->dev, "Reading status reg %u failed\n",
> -                              lan9303_mib[u].offset + poff);
> +                     dev_warn(chip->dev, "Reading status port %d reg %u 
> failed\n",
> +                              port, lan9303_mib[u].offset);
>               data[u] = reg;
>       }
>  }
> 


-- 
Florian