linux-kernel - Re: [PATCH 9/9] usb: gadget: f_hid: use alloc_ep

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Date:	Wed, 27 Jul 2016 22:34:16 +0200
From:	Michal Nazarewicz <mina86@...a86.com>
To:	"Felipe F. Tonello" <eu@...ipetonello.com>,
	linux-usb@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Felipe Balbi <balbi@...nel.org>,
	Baolin Wang <baolin.wang@...aro.org>,
	Andrzej Pietrasiewicz <andrzej.p@...sung.com>
Subject: Re: [PATCH 9/9] usb: gadget: f_hid: use alloc_ep_req()

On Tue, Jul 26 2016, 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@...ipetonello.com>

Acked-by: Michal Nazarewicz <mina86@...a86.com>

> ---
>  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;
> -- 
> 2.9.0
>

-- 
Best regards
ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ
«If at first you don’t succeed, give up skydiving»