Re: [PATCH v3 3/7] drm: Add driver for Solomon SSD130X OLED displays

[Mark Brown]

On Wed, Feb 09, 2022 at 10:03:10AM +0100, Javier Martinez Canillas wrote:

> +	if (ssd130x->vbat_reg) {
> +		ret = regulator_enable(ssd130x->vbat_reg);
> +		if (ret) {
> +			dev_err(dev, "Failed to enable VBAT: %d\n", ret);
> +			return ret;
> +		}
> +	}

Unless the device supports power being physically omitted regulator
usage should not be optional, it's just more code and a recipie for poor
error handling.

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