Re: [PATCH v1 2/6] PCI: brcmstb: Add control of EP voltage regulator(s)

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On Wed, Nov 25, 2020 at 02:24:19PM -0500, Jim Quinlan wrote:

> +	for (i = 0; i < PCIE_REGULATORS_MAX; i++) {
> +		ep_reg = devm_regulator_get_optional(dev, ep_regulator_names[i]);
> +		if (IS_ERR(ep_reg)) {

Does PCI allow supplies to be physically absent?  If not then the driver
shouldn't be using regulator_get_optional() and much of the code here
can be deleted.

> +static void brcm_set_regulators(struct brcm_pcie *pcie, bool on)
> +{

This is open coding the regulator bulk APIs.

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