Re: [PATCH] usb: chipidea: remove unneeded NULL check

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On Wed, May 23, 2012 at 04:00:56PM +0300, Alexander Shishkin wrote:
> As reported by Dan Carpenter, there is a NULL check in udc_start() that
> follows a dereference of the pointer that's being checked. However, at
> that point udc pointer shouldn't ever be NULL and if it is, the dereference
> should cause an oops.
> 
> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>

looks good to my eyes:

Acked-by: Felipe Balbi <balbi@xxxxxx>

> ---
>  drivers/usb/chipidea/udc.c |    3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index 51f9694..cdb9212 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1647,9 +1647,6 @@ static int udc_start(struct ci13xxx *udc)
>  	struct device *dev = udc->dev;
>  	int retval = 0;
>  
> -	if (!udc)
> -		return -EINVAL;
> -
>  	spin_lock_init(&udc->lock);
>  
>  	udc->gadget.ops          = &usb_gadget_ops;
> -- 
> 1.7.10
> 

-- 
balbi

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