On Tue, Nov 12 2013, David Cohen wrote:
> On 11/11/2013 03:55 PM, Michal Nazarewicz wrote:
>> Come to think of it, perhaps even better helper would be:
>>
>> static inline size_t usb_ep_align_maybe(
>> struct usb_gadget *gadget, struct usb_ep *ep, size_t len) {
>> return gadget->quir_ep_out_aligned_size ?
>> round_up(len, (size_t)ep->desc->wMaxPacketSize) : len;
>> }
>
> The CPU time to check unsigned:1 and possibly jump is about the same as
> round_up() itself. For readability matters, we can round_up() directly.
I was proposing to have this function and than not have functions check
for the flag. I.e. instead of
if (gadget->quirk_ep_out_aligned_size)
len = usb_ep_align_maxpacketsize(ep, len);
the code would just be:
len = usb_ep_align_maybe(gadget, ep, len);
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Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michał “mina86” Nazarewicz (o o)
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