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Commit 756a2eed authored by Thomas Pugliese's avatar Thomas Pugliese Committed by Greg Kroah-Hartman
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usb: wusbcore: set packet count correctly on isoc transfers 



This patch correctly sets the dwNumOfPackets field of the HWA transfer
request for isochronous transfers with multiple segments.  Previously
all segments used the value that was set for the first segment which may
not be correct.

Signed-off-by: default avatarThomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ea1af42d

drivers/usb/wusbcore/wa-xfer.c

+5 −0
Original line number Diff line number Diff line
@@ -1259,8 +1259,11 @@ static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb) 
		for (cnt = 1; cnt < xfer->segs; cnt++) {

			struct wa_xfer_packet_info_hwaiso *packet_desc;

			struct wa_seg *seg = xfer->seg[cnt];

			struct wa_xfer_hwaiso *xfer_iso;



			xfer_hdr = &seg->xfer_hdr;

			xfer_iso = container_of(xfer_hdr,

						struct wa_xfer_hwaiso, hdr);

			packet_desc = ((void *)xfer_hdr) + xfer_hdr_size;

			/*

			 * Copy values from the 0th header. Segment specific
@@ -1270,6 +1273,8 @@ static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb) 
			xfer_hdr->bTransferSegment = cnt;

			xfer_hdr->dwTransferLength =

				cpu_to_le32(seg->isoc_size);

			xfer_iso->dwNumOfPackets =

					cpu_to_le32(seg->isoc_frame_count);

			__wa_setup_isoc_packet_descr(packet_desc, xfer, seg);

			seg->status = WA_SEG_READY;

		}