Re: [PATCH v4 10/10] usb: gadget: f_hid: use alloc_ep_req()

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Hi Balbi,

On 23/08/16 12:03, Felipe Balbi wrote:
> 
> Hi,
> 
> Felipe Ferreri Tonello <eu@xxxxxxxxxxxxxxxxx> writes:
>>> John Youn <John.Youn@xxxxxxxxxxxx> writes:
>>>> On 8/8/2016 1:30 PM, Felipe F. Tonello wrote:
>>>>> Use gadget's framework allocation function instead of directly calling
>>>>> usb_ep_alloc_request().
>>>>>
>>>>> Signed-off-by: Felipe F. Tonello <eu@xxxxxxxxxxxxxxxxx>
>>>>> ---
>>>>>  drivers/usb/gadget/function/f_hid.c | 6 +-----
>>>>>  1 file changed, 1 insertion(+), 5 deletions(-)
>>>>>
>>>>> diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
>>>>> index a010496e4e05..89d2e9a5a04f 100644
>>>>> --- a/drivers/usb/gadget/function/f_hid.c
>>>>> +++ b/drivers/usb/gadget/function/f_hid.c
>>>>> @@ -611,14 +611,10 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f)
>>>>>  
>>>>>  	/* preallocate request and buffer */
>>>>>  	status = -ENOMEM;
>>>>> -	hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL);
>>>>> +	hidg->req = alloc_ep_req(hidg->in_ep, hidg->report_length);
>>>>>  	if (!hidg->req)
>>>>>  		goto fail;
>>>>>  
>>>>> -	hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL);
>>>>> -	if (!hidg->req->buf)
>>>>> -		goto fail;
>>>>> -
>>>>>  	/* set descriptor dynamic values */
>>>>>  	hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass;
>>>>>  	hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol;
>>>>>
>>>>
>>>> Hi Felipe,
>>>>
>>>> This commit on your testing/next breaks compilation.
>>>>
>>>> ../drivers/usb/gadget/function/f_hid.c: In function ‘hidg_bind’:
>>>> ../drivers/usb/gadget/function/f_hid.c:620:14: error: too few arguments to function ‘alloc_ep_req’
>>>>   hidg->req = alloc_ep_req(hidg->in_ep, hidg->report_length);
>>>>               ^
>>>> In file included from ../drivers/usb/gadget/function/f_hid.c:24:0:
>>>> ../drivers/usb/gadget/u_f.h:63:21: note: declared here
>>>>  struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len, int default_len);
>>>
>>> true that :-) Dropping from my queue.
>>>
>>
>> Are you applying the previous patches? Specially that this is the last
>> patch in the series, how can it break with you if it doesn't break here?
>> What should I do then?
> 
> Can you rebase your series on top of my testing/next? My HEAD is
> at commit 95bbb3474f1e87c9ec7ebe2acf25006e5e94a824.

It was at that time. I will rebease it then on v5. Just waiting for your
comments on the other thread.

Thanks

-- 
Felipe

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