Date: Thu, 14 Oct 2010 22:19:08 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: Weongyo Jeong <weongyo@freebsd.org> Cc: "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-user@freebsd.org" <svn-src-user@freebsd.org> Subject: Re: svn commit: r213847 - user/weongyo/usb/sys/dev/usb Message-ID: <201010142219.08408.hselasky@c2i.net> In-Reply-To: <201010142004.o9EK458X035369@svn.freebsd.org> References: <201010142004.o9EK458X035369@svn.freebsd.org>
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On Thursday 14 October 2010 22:04:05 Weongyo Jeong wrote:
> + for (i = 0; i < up->up_frames; i++) {
> + if (ptr + sizeof(u_int32_t) >= end)
> + goto done;
> + *((u_int32_t *)ptr) = xfer->frlengths[i];
> + ptr += sizeof(u_int32_t);
> +
> + if (ptr + xfer->frlengths[i] >= end)
> + goto done;
> + usbd_get_page(&xfer->frbuffers[i], 0, &res);
> + bcopy(res.buffer, ptr, xfer->frlengths[i]);
> + ptr += xfer->frlengths[i];
> + }
For isochronous transfers only the first frbuffer is used for all transfers,
which are back to back.
--HPS
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