[PATCH v4] pwm: vt8500: Update vt8500 PWM driver support

[Chris Brand]

Hi Tony,

> @@ -124,6 +156,12 @@ static int __devinit pwm_probe(struct
> platform_device *pdev)
>  	chip->chip.base = -1;
>  	chip->chip.npwm = VT8500_NR_PWMS;
> 
> +	chip->clk = devm_clk_get(&pdev->dev, NULL);
> +	if (IS_ERR_OR_NULL(chip->clk)) {
> +		dev_err(&pdev->dev, "clock source not specified\n");
> +		return PTR_ERR(chip->clk);
> +	}
> +

Do you want IS_ERR() rather than IS_ERR_OR_NULL() here ?
Otherwise you may return PTR_ERR(NULL).

Chris