[PATCH] USB: fsl_udc_core: Use (&) instead of (==) to compare ISO XFER

Michal Nazarewicz mina86 at mina86.com
Tue Nov 22 12:26:24 EST 2011


> On Tue, 22 Nov 2011 02:15:21 +0100, Peter Chen <peter.chen at freescale.com> wrote:
>> @@ -877,7 +877,7 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
>>  		VDBG("%s, bad ep", __func__);
>>  		return -EINVAL;
>>  	}
>> -	if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
>> +	if (ep->desc->bmAttributes & USB_ENDPOINT_XFER_ISOC) {

On Tue, 22 Nov 2011 02:22:10 +0100, Michal Nazarewicz <mina86 at mina86.com> wrote:
> What you really meant is:
>
> (ep->desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC
>
> It would probably be useful to create a function that performs that check rather
> than having to type all of that every time.

Ah, there it is:

usb_endpoint_xfer_isoc(ep)

:)

>
>>  		if (req->req.length > ep->ep.maxpacket)
>>  			return -EMSGSIZE;
>>  	}

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
ooo +----<email/xmpp: mpn at google.com>--------------ooO--(_)--Ooo--


More information about the Linuxppc-dev mailing list