On Wed, 2010-09-01 at 11:26 +0900, Masayuki Ohtak wrote:
> I2C driver of Topcliff PCH
> +++ b/drivers/i2c/busses/i2c-pch.c
[]
> +static void pch_init(struct i2c_algo_pch_data *adap)
[]
> +     if (pch_i2c_speed == FAST_MODE_CLK) {
> +             reg_value |= FAST_MODE_EN;
> +             dev_dbg(adap->pch_adapter.dev.parent, "Fast mode enabled\n");
> +     }

Just a suggestion below, ignore it at your pleasure...

These dev_<level> calls might be easier to read if you had
some #defines like:

#define pch_dbg(adap, fmt, arg...)              \
        dev_dbg(adap->pch_adapter.dev.parent, fmt, ##arg)
#define pch_err(adap, fmt, arg...)              \
        dev_err(adap->pch_adapter.dev.parent, fmt, ##arg)
#define pch_info(adap, fmt, arg...)             \
        dev_info(adap->pch_adapter.dev.parent, fmt, ##arg)

then the last dev_dbg becomes:

                pch_dbg(adap, "Fast mode enabled\n");

Many modules use similar wrapper #defines.

> +     dev_dbg(adap->pch_adapter.dev.parent,
> +             "%s: I2CCTL=%x pch_i2cbc=%x pch_i2ctmr=%x Enable interrupts\n",
> +             __func__, ioread32(p + PCH_I2CCTL),
> +             pch_i2cbc, pch_i2ctmr);

        pch_dbg(adap, etc...)

etc.

cheers, Joe

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