Re: [PATCH] USB: gadget: f_fs: fix error handling

[Sergei Shtylyov]

Hello.

On 09/27/2013 02:28 PM, Robert Baldyga wrote:

> This patch add missing error check in ffs_func_bind() function, after
> ffs_do_descs() funcion call for hs descriptors. Without this check it's

   s/funcion/function/.
   Perhaps it's worth expanding "hs" to "high speed" for clarity?

> possible that the module will try dereference incorrect pointer.

> Signed-off-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
> ---
>   drivers/usb/gadget/f_fs.c |    3 +++
>   1 file changed, 3 insertions(+)

> diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
> index 1a66c5b..fe7d532 100644
> --- a/drivers/usb/gadget/f_fs.c
> +++ b/drivers/usb/gadget/f_fs.c
> @@ -2264,7 +2264,10 @@ static int ffs_func_bind(struct usb_configuration *c,
>   				   data->raw_descs + ret,
>   				   (sizeof data->raw_descs) - ret,
>   				   __ffs_func_bind_do_descs, func);
> +		if (unlikely(ret < 0))
> +			goto error;
>   	}
> +	

   Why add second empty line here?

>   	/*
>   	 * Now handle interface numbers allocation and interface and

WBR, Sergei

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