Subject: [PATCH 4/7] regulator: anatop-regulator: convert to use imx-syscon to access anatop register

From: [email-masked] (Stephen Warren)
Date: Wed, 22 Aug 2012 23:21:03 -0600

On 08/22/2012 01:18 AM, Dong Aisheng wrote:
> Signed-off-by: Dong Aisheng <[email-masked]>

> diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c

> @@ -109,7 +110,11 @@ static int __devinit anatop_regulator_probe(struct platform_device *pdev)
>  	rdesc->ops = &anatop_rops;
>  	rdesc->type = REGULATOR_VOLTAGE;
>  	rdesc->owner = THIS_MODULE;
> -	sreg->mfd = anatopmfd;
> +
> +	sreg->anatop = of_parse_phandle(np, "fsl,anatop", 0);
> +	if (!sreg->anatop)
> +		return -ENODEV;

In fact, that imx_syscon_lookup function I proposed could even do the
of_parse_phandle() internally, so perhaps:

foo->syscon_dev = imx_syscon_lookup(np, "fsl,anatop", 0);
if (IS_ERR(foo->syscon_dev))
    return PTR_ERR(foo->syscon_dev);

with imx_syscon_lookup() internally knowing when to return EPROBE_DEFER
rather than any other permanent error code (e.g. for missing property,
bad phandle, etc.)