linux-kernel - Re: [PATCH v2 45/48] usb: gadget: net2280: add net2280_match

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Date:	Tue, 14 Jul 2015 14:14:54 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Robert Baldyga <r.baldyga@...sung.com>, gregkh@...uxfoundation.org,
	balbi@...com
Cc:	Peter.Chen@...escale.com, johnyoun@...opsys.com,
	dahlmann.thomas@...or.de, nicolas.ferre@...el.com,
	cernekee@...il.com, leoli@...escale.com, daniel@...que.org,
	haojian.zhuang@...il.com, robert.jarzmik@...e.fr,
	michal.simek@...inx.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-geode@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linuxppc-dev@...ts.ozlabs.org, andrzej.p@...sung.com,
	m.szyprowski@...sung.com
Subject: Re: [PATCH v2 45/48] usb: gadget: net2280: add net2280_match_ep()
 function

Hello.

On 7/14/2015 12:39 PM, Robert Baldyga wrote:

> Add 'match_ep' callback to utilize chip-specific knowledge in endpoint matching
> process. Functions does the same that was done by chip-specific code inside
> of epautoconf. Now this code can be removed from there to separate generic code
> from platform specific logic.

> Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>

[...]
> diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
> index 0295cf7..4933321 100644
> --- a/drivers/usb/gadget/udc/net2280.c
> +++ b/drivers/usb/gadget/udc/net2280.c
> @@ -1533,6 +1533,49 @@ static int net2280_pullup(struct usb_gadget *_gadget, int is_on)
>   	return 0;
>   }
>
> +static struct usb_ep *net2280_find_ep(struct usb_gadget *_gadget,
> +		const char *name)

    Shouldn't this be a generic function as before?

> +{
> +	struct usb_ep *ep;
> +
> +	list_for_each_entry(ep, &_gadget->ep_list, ep_list) {
> +		if (0 == strcmp(ep->name, name))

    Please make 0 the 2nd operand to ==.

> +			return ep;
> +	}
> +
> +	return NULL;
> +}
[...]

WBR, Sergei

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