Re: [patch] usb: chipidea: fix a NULL dereference on error

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On Fri, Aug 16, 2013 at 10:34:10AM +0300, Dan Carpenter wrote:
> The regulator_disable() function can't accept NULL pointers so we need
> to add a check.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> 
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index 6f96795..abfb1cc 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -88,7 +88,8 @@ static int host_start(struct ci_hdrc *ci)
>  	return ret;
>  
>  disable_reg:
> -	regulator_disable(ci->platdata->reg_vbus);
> +	if (ci->platdata->reg_vbus)
> +		regulator_disable(ci->platdata->reg_vbus);
>  
>  put_hcd:
>  	usb_put_hcd(hcd);
> --
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> 

Acked-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>

-- 

Best Regards,
Peter Chen

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