diff options
Diffstat (limited to 'drivers/usb/wusbcore/wa-xfer.c')
| -rw-r--r-- | drivers/usb/wusbcore/wa-xfer.c | 366 |
1 files changed, 255 insertions, 111 deletions
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index f1e9a386beca..9325d27453c4 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -121,6 +121,9 @@ struct wa_seg { struct list_head list_node; /* for rpipe->req_list */ struct wa_xfer *xfer; /* out xfer */ u8 index; /* which segment we are */ + int isoc_frame_count; /* number of isoc frames in this segment. */ + int isoc_frame_offset; /* starting frame offset in the xfer URB. */ + int isoc_size; /* size of all isoc frames sent by this seg. */ enum wa_seg_status status; ssize_t result; /* bytes xfered or error */ struct wa_xfer_hdr xfer_hdr; @@ -154,12 +157,17 @@ struct wa_xfer { unsigned is_dma:1; size_t seg_size; int result; + /* Isoc frame that the current transfer buffer corresponds to. */ + int dto_isoc_frame_index; gfp_t gfp; /* allocation mask */ struct wusb_dev *wusb_dev; /* for activity timestamps */ }; +static void __wa_populate_dto_urb_isoc(struct wa_xfer *xfer, + struct wa_seg *seg, int curr_iso_frame); + static inline void wa_xfer_init(struct wa_xfer *xfer) { kref_init(&xfer->refcnt); @@ -463,6 +471,31 @@ error_kmalloc: } /* + * Calculate the number of isoc frames starting from isoc_frame_offset + * that will fit a in transfer segment. + */ +static int __wa_seg_calculate_isoc_frame_count(struct wa_xfer *xfer, + int isoc_frame_offset, int *total_size) +{ + int segment_size = 0, frame_count = 0; + int index = isoc_frame_offset; + + while ((index < xfer->urb->number_of_packets) + && ((segment_size + xfer->urb->iso_frame_desc[index].length) + <= xfer->seg_size)) { + /* this frame fits. count it. */ + ++frame_count; + segment_size += xfer->urb->iso_frame_desc[index].length; + + /* move to the next isoc frame. */ + ++index; + } + + *total_size = segment_size; + return frame_count; +} + +/* * * @returns < 0 on error, transfer segment request size if ok */ @@ -505,8 +538,20 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer, maxpktsize = le16_to_cpu(rpipe->descr.wMaxPacketSize); if ((rpipe->descr.bmAttribute & 0x3) == USB_ENDPOINT_XFER_ISOC) { + int index = 0; + xfer->seg_size = maxpktsize; - xfer->segs = urb->number_of_packets; + xfer->segs = 0; + /* + * loop over urb->number_of_packets to determine how many + * xfer segments will be needed to send the isoc frames. + */ + while (index < urb->number_of_packets) { + int seg_size; /* don't care. */ + index += __wa_seg_calculate_isoc_frame_count(xfer, + index, &seg_size); + ++xfer->segs; + } } else { xfer->seg_size = le16_to_cpu(rpipe->descr.wBlocks) * 1 << (xfer->wa->wa_descr->bRPipeBlockSize - 1); @@ -523,20 +568,43 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer, xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize; xfer->segs = DIV_ROUND_UP(urb->transfer_buffer_length, xfer->seg_size); - if (xfer->segs >= WA_SEGS_MAX) { - dev_err(dev, "BUG? oops, number of segments %zu bigger than %d\n", - (urb->transfer_buffer_length/xfer->seg_size), - WA_SEGS_MAX); - result = -EINVAL; - goto error; - } if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL) xfer->segs = 1; } + + if (xfer->segs >= WA_SEGS_MAX) { + dev_err(dev, "BUG? oops, number of segments %zu bigger than %d\n", + (urb->transfer_buffer_length/xfer->seg_size), + WA_SEGS_MAX); + result = -EINVAL; + goto error; + } error: return result; } +static void __wa_setup_isoc_packet_descr( + struct wa_xfer_packet_info_hwaiso *packet_desc, + struct wa_xfer *xfer, + struct wa_seg *seg) { + struct usb_iso_packet_descriptor *iso_frame_desc = + xfer->urb->iso_frame_desc; + int frame_index; + + /* populate isoc packet descriptor. */ + packet_desc->bPacketType = WA_XFER_ISO_PACKET_INFO; + packet_desc->wLength = cpu_to_le16(sizeof(*packet_desc) + + (sizeof(packet_desc->PacketLength[0]) * + seg->isoc_frame_count)); + for (frame_index = 0; frame_index < seg->isoc_frame_count; + ++frame_index) { + int offset_index = frame_index + seg->isoc_frame_offset; + packet_desc->PacketLength[frame_index] = + cpu_to_le16(iso_frame_desc[offset_index].length); + } +} + + /* Fill in the common request header and xfer-type specific data. */ static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer, struct wa_xfer_hdr *xfer_hdr0, @@ -544,8 +612,9 @@ static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer, size_t xfer_hdr_size) { struct wa_rpipe *rpipe = xfer->ep->hcpriv; + struct wa_seg *seg = xfer->seg[0]; - xfer_hdr0 = &xfer->seg[0]->xfer_hdr; + xfer_hdr0 = &seg->xfer_hdr; xfer_hdr0->bLength = xfer_hdr_size; xfer_hdr0->bRequestType = xfer_type; xfer_hdr0->wRPipe = rpipe->descr.wRPipeIndex; @@ -567,19 +636,11 @@ static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer, container_of(xfer_hdr0, struct wa_xfer_hwaiso, hdr); struct wa_xfer_packet_info_hwaiso *packet_desc = ((void *)xfer_iso) + xfer_hdr_size; - struct usb_iso_packet_descriptor *iso_frame_desc = - &(xfer->urb->iso_frame_desc[0]); + /* populate the isoc section of the transfer request. */ - xfer_iso->dwNumOfPackets = cpu_to_le32(1); - /* - * populate isoc packet descriptor. This assumes 1 - * packet per segment. - */ - packet_desc->wLength = cpu_to_le16(sizeof(*packet_desc) + - sizeof(packet_desc->PacketLength[0])); - packet_desc->bPacketType = WA_XFER_ISO_PACKET_INFO; - packet_desc->PacketLength[0] = - cpu_to_le16(iso_frame_desc->length); + xfer_iso->dwNumOfPackets = cpu_to_le32(seg->isoc_frame_count); + /* populate isoc packet descriptor. */ + __wa_setup_isoc_packet_descr(packet_desc, xfer, seg); break; } default: @@ -608,54 +669,112 @@ static void wa_seg_dto_cb(struct urb *urb) struct wa_rpipe *rpipe; unsigned long flags; unsigned rpipe_ready = 0; + int data_send_done = 1, release_dto = 0, holding_dto = 0; u8 done = 0; + int result; /* free the sg if it was used. */ kfree(urb->sg); urb->sg = NULL; + spin_lock_irqsave(&xfer->lock, flags); + wa = xfer->wa; + dev = &wa->usb_iface->dev; + if (usb_pipeisoc(xfer->urb->pipe)) { + xfer->dto_isoc_frame_index += 1; + if (xfer->dto_isoc_frame_index < seg->isoc_frame_count) { + data_send_done = 0; + holding_dto = 1; /* checked in error cases. */ + /* + * if this is the last isoc frame of the segment, we + * can release DTO after sending this frame. + */ + if ((xfer->dto_isoc_frame_index + 1) >= + seg->isoc_frame_count) + release_dto = 1; + } + dev_dbg(dev, "xfer 0x%08X#%u: isoc frame = %d, holding_dto = %d, release_dto = %d.\n", + wa_xfer_id(xfer), seg->index, + xfer->dto_isoc_frame_index, holding_dto, release_dto); + } + spin_unlock_irqrestore(&xfer->lock, flags); + switch (urb->status) { case 0: spin_lock_irqsave(&xfer->lock, flags); - wa = xfer->wa; - dev = &wa->usb_iface->dev; - dev_dbg(dev, "xfer %p#%u: data out done (%d bytes)\n", - xfer, seg->index, urb->actual_length); - if (seg->status < WA_SEG_PENDING) - seg->status = WA_SEG_PENDING; - seg->result = urb->actual_length; + seg->result += urb->actual_length; + if (data_send_done) { + dev_dbg(dev, "xfer 0x%08X#%u: data out done (%zu bytes)\n", + wa_xfer_id(xfer), seg->index, seg->result); + if (seg->status < WA_SEG_PENDING) + seg->status = WA_SEG_PENDING; + } else { + /* should only hit this for isoc xfers. */ + /* + * Populate the dto URB with the next isoc frame buffer, + * send the URB and release DTO if we no longer need it. + */ + __wa_populate_dto_urb_isoc(xfer, seg, + seg->isoc_frame_offset + + xfer->dto_isoc_frame_index); + + /* resubmit the URB with the next isoc frame. */ + result = usb_submit_urb(seg->dto_urb, GFP_ATOMIC); + if (result < 0) { + dev_err(dev, "xfer 0x%08X#%u: DTO submit failed: %d\n", + wa_xfer_id(xfer), seg->index, result); + spin_unlock_irqrestore(&xfer->lock, flags); + goto error_dto_submit; + } + } spin_unlock_irqrestore(&xfer->lock, flags); + if (release_dto) { + __wa_dto_put(wa); + wa_check_for_delayed_rpipes(wa); + } break; case -ECONNRESET: /* URB unlinked; no need to do anything */ case -ENOENT: /* as it was done by the who unlinked us */ + if (holding_dto) { + __wa_dto_put(wa); + wa_check_for_delayed_rpipes(wa); + } break; default: /* Other errors ... */ - spin_lock_irqsave(&xfer->lock, flags); - wa = xfer->wa; - dev = &wa->usb_iface->dev; - rpipe = xfer->ep->hcpriv; - dev_dbg(dev, "xfer %p#%u: data out error %d\n", - xfer, seg->index, urb->status); - if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS, - EDC_ERROR_TIMEFRAME)){ - dev_err(dev, "DTO: URB max acceptable errors " - "exceeded, resetting device\n"); - wa_reset_all(wa); - } - if (seg->status != WA_SEG_ERROR) { - seg->status = WA_SEG_ERROR; - seg->result = urb->status; - xfer->segs_done++; - __wa_xfer_abort(xfer); - rpipe_ready = rpipe_avail_inc(rpipe); - done = __wa_xfer_is_done(xfer); - } - spin_unlock_irqrestore(&xfer->lock, flags); - if (done) - wa_xfer_completion(xfer); - if (rpipe_ready) - wa_xfer_delayed_run(rpipe); + dev_err(dev, "xfer 0x%08X#%u: data out error %d\n", + wa_xfer_id(xfer), seg->index, urb->status); + goto error_default; + } + + return; + +error_dto_submit: +error_default: + spin_lock_irqsave(&xfer->lock, flags); + rpipe = xfer->ep->hcpriv; + if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS, + EDC_ERROR_TIMEFRAME)){ + dev_err(dev, "DTO: URB max acceptable errors exceeded, resetting device\n"); + wa_reset_all(wa); + } + if (seg->status != WA_SEG_ERROR) { + seg->status = WA_SEG_ERROR; + seg->result = urb->status; + xfer->segs_done++; + __wa_xfer_abort(xfer); + rpipe_ready = rpipe_avail_inc(rpipe); + done = __wa_xfer_is_done(xfer); } + spin_unlock_irqrestore(&xfer->lock, flags); + if (holding_dto) { + __wa_dto_put(wa); + wa_check_for_delayed_rpipes(wa); + } + if (done) + wa_xfer_completion(xfer); + if (rpipe_ready) + wa_xfer_delayed_run(rpipe); + } /* @@ -686,8 +805,8 @@ static void wa_seg_iso_pack_desc_cb(struct urb *urb) spin_lock_irqsave(&xfer->lock, flags); wa = xfer->wa; dev = &wa->usb_iface->dev; - dev_dbg(dev, "iso xfer %p#%u: packet descriptor done\n", - xfer, seg->index); + dev_dbg(dev, "iso xfer %08X#%u: packet descriptor done\n", + wa_xfer_id(xfer), seg->index); if (xfer->is_inbound && seg->status < WA_SEG_PENDING) seg->status = WA_SEG_PENDING; spin_unlock_irqrestore(&xfer->lock, flags); @@ -700,8 +819,8 @@ static void wa_seg_iso_pack_desc_cb(struct urb *urb) wa = xfer->wa; dev = &wa->usb_iface->dev; rpipe = xfer->ep->hcpriv; - pr_err_ratelimited("iso xfer %p#%u: packet descriptor error %d\n", - xfer, seg->index, urb->status); + pr_err_ratelimited("iso xfer %08X#%u: packet descriptor error %d\n", + wa_xfer_id(xfer), seg->index, urb->status); if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)){ dev_err(dev, "DTO: URB max acceptable errors exceeded, resetting device\n"); @@ -885,8 +1004,8 @@ static struct scatterlist *wa_xfer_create_subset_sg(struct scatterlist *in_sg, /* * Populate DMA buffer info for the isoc dto urb. */ -static void __wa_populate_dto_urb_iso(struct wa_xfer *xfer, - struct wa_seg *seg, int curr_iso_frame) +static void __wa_populate_dto_urb_isoc(struct wa_xfer *xfer, + struct wa_seg *seg, int curr_iso_frame) { /* * dto urb buffer address and size pulled from @@ -960,13 +1079,14 @@ static int __wa_populate_dto_urb(struct wa_xfer *xfer, */ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) { - int result, cnt; + int result, cnt, iso_frame_offset; size_t alloc_size = sizeof(*xfer->seg[0]) - sizeof(xfer->seg[0]->xfer_hdr) + xfer_hdr_size; struct usb_device *usb_dev = xfer->wa->usb_dev; const struct usb_endpoint_descriptor *dto_epd = xfer->wa->dto_epd; struct wa_seg *seg; - size_t buf_itr, buf_size, buf_itr_size, iso_pkt_descr_size = 0; + size_t buf_itr, buf_size, buf_itr_size; + int xfer_isoc_frame_offset = 0; result = -ENOMEM; xfer->seg = kcalloc(xfer->segs, sizeof(xfer->seg[0]), GFP_ATOMIC); @@ -974,24 +1094,30 @@ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) goto error_segs_kzalloc; buf_itr = 0; buf_size = xfer->urb->transfer_buffer_length; + iso_frame_offset = 0; + for (cnt = 0; cnt < xfer->segs; cnt++) { + size_t iso_pkt_descr_size = 0; + int seg_isoc_frame_count = 0, seg_isoc_size = 0; - if (usb_pipeisoc(xfer->urb->pipe)) { - /* - * This calculation assumes one isoc packet per xfer segment. - * It will need to be updated if this changes. - */ - iso_pkt_descr_size = sizeof(struct wa_xfer_packet_info_hwaiso) + - sizeof(__le16); - alloc_size += iso_pkt_descr_size; - } + if (usb_pipeisoc(xfer->urb->pipe)) { + seg_isoc_frame_count = + __wa_seg_calculate_isoc_frame_count(xfer, + xfer_isoc_frame_offset, &seg_isoc_size); - for (cnt = 0; cnt < xfer->segs; cnt++) { - seg = xfer->seg[cnt] = kmalloc(alloc_size, GFP_ATOMIC); + iso_pkt_descr_size = + sizeof(struct wa_xfer_packet_info_hwaiso) + + (seg_isoc_frame_count * sizeof(__le16)); + } + seg = xfer->seg[cnt] = kmalloc(alloc_size + iso_pkt_descr_size, + GFP_ATOMIC); if (seg == NULL) goto error_seg_kmalloc; wa_seg_init(seg); seg->xfer = xfer; seg->index = cnt; + seg->isoc_frame_count = seg_isoc_frame_count; + seg->isoc_frame_offset = xfer_isoc_frame_offset; + seg->isoc_size = seg_isoc_size; usb_fill_bulk_urb(&seg->tr_urb, usb_dev, usb_sndbulkpipe(usb_dev, dto_epd->bEndpointAddress), @@ -1029,8 +1155,16 @@ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) iso_pkt_descr_size, wa_seg_iso_pack_desc_cb, seg); - /* fill in the xfer buffer information. */ - __wa_populate_dto_urb_iso(xfer, seg, cnt); + /* + * Fill in the xfer buffer information for the + * first isoc frame. Subsequent frames in this + * segment will be filled in and sent from the + * DTO completion routine, if needed. + */ + __wa_populate_dto_urb_isoc(xfer, seg, + xfer_isoc_frame_offset); + /* adjust starting frame offset for next seg. */ + xfer_isoc_frame_offset += seg_isoc_frame_count; } else { /* fill in the xfer buffer information. */ result = __wa_populate_dto_urb(xfer, seg, @@ -1099,28 +1233,23 @@ static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb) xfer_hdr = xfer_hdr0; if (xfer_type == WA_XFER_TYPE_ISO) { xfer_hdr0->dwTransferLength = - cpu_to_le32(xfer->urb->iso_frame_desc[0].length); + cpu_to_le32(xfer->seg[0]->isoc_size); for (cnt = 1; cnt < xfer->segs; cnt++) { - struct usb_iso_packet_descriptor *iso_frame_desc = - &(xfer->urb->iso_frame_desc[cnt]); struct wa_xfer_packet_info_hwaiso *packet_desc; + struct wa_seg *seg = xfer->seg[cnt]; - xfer_hdr = &xfer->seg[cnt]->xfer_hdr; + xfer_hdr = &seg->xfer_hdr; packet_desc = ((void *)xfer_hdr) + xfer_hdr_size; /* - * Copy values from the 0th header and isoc packet - * descriptor. Segment specific values are set below. + * Copy values from the 0th header. Segment specific + * values are set below. */ - memcpy(xfer_hdr, xfer_hdr0, - xfer_hdr_size + sizeof(*packet_desc)); + memcpy(xfer_hdr, xfer_hdr0, xfer_hdr_size); xfer_hdr->bTransferSegment = cnt; xfer_hdr->dwTransferLength = - cpu_to_le32(iso_frame_desc->length); - /* populate isoc packet descriptor length. */ - packet_desc->PacketLength[0] = - cpu_to_le16(iso_frame_desc->length); - - xfer->seg[cnt]->status = WA_SEG_READY; + cpu_to_le32(seg->isoc_size); + __wa_setup_isoc_packet_descr(packet_desc, xfer, seg); + seg->status = WA_SEG_READY; } } else { transfer_size = urb->transfer_buffer_length; @@ -1175,6 +1304,13 @@ static int __wa_seg_submit(struct wa_rpipe *rpipe, struct wa_xfer *xfer, __func__, xfer, seg->index, result); goto error_iso_pack_desc_submit; } + xfer->dto_isoc_frame_index = 0; + /* + * If this segment contains more than one isoc frame, hold + * onto the dto resource until we send all frames. + */ + if (seg->isoc_frame_count > 1) + *dto_done = 0; } /* submit the out data if this is an out request. */ if (seg->dto_urb) { @@ -1196,6 +1332,7 @@ error_iso_pack_desc_submit: error_seg_submit: seg->status = WA_SEG_ERROR; seg->result = result; + *dto_done = 1; return result; } @@ -1306,9 +1443,6 @@ static int __wa_xfer_submit(struct wa_xfer *xfer) available = atomic_read(&rpipe->segs_available); empty = list_empty(&rpipe->seg_list); seg = xfer->seg[cnt]; - dev_dbg(dev, "xfer %p ID 0x%08X#%u: available %u empty %u (%s)\n", - xfer, wa_xfer_id(xfer), cnt, available, empty, - available == 0 || !empty ? "delayed" : "submitted"); if (available && empty) { /* * Only attempt to acquire DTO if we have a segment @@ -1319,6 +1453,9 @@ static int __wa_xfer_submit(struct wa_xfer *xfer) delay_seg = 0; result = __wa_seg_submit(rpipe, xfer, seg, &dto_done); + dev_dbg(dev, "xfer %p ID 0x%08X#%u: available %u empty %u submitted\n", + xfer, wa_xfer_id(xfer), cnt, available, + empty); if (dto_done) __wa_dto_put(rpipe->wa); @@ -1330,6 +1467,8 @@ static int __wa_xfer_submit(struct wa_xfer *xfer) } if (delay_seg) { + dev_dbg(dev, "xfer %p ID 0x%08X#%u: available %u empty %u delayed\n", + xfer, wa_xfer_id(xfer), cnt, available, empty); seg->status = WA_SEG_DELAYED; list_add_tail(&seg->list_node, &rpipe->seg_list); } @@ -2031,29 +2170,19 @@ static void wa_process_iso_packet_status(struct wahc *wa, struct urb *urb) { struct device *dev = &wa->usb_iface->dev; struct wa_xfer_packet_status_hwaiso *packet_status; + struct wa_xfer_packet_status_len_hwaiso *status_array; struct wa_xfer *xfer; unsigned long flags; struct wa_seg *seg; struct wa_rpipe *rpipe; unsigned done = 0; - unsigned rpipe_ready = 0; - const int expected_size = sizeof(*packet_status) + - sizeof(packet_status->PacketStatus[0]); + unsigned rpipe_ready = 0, seg_index; + int expected_size; /* We have a xfer result buffer; check it */ dev_dbg(dev, "DTI: isoc packet status %d bytes at %p\n", urb->actual_length, urb->transfer_buffer); - if (urb->actual_length != expected_size) { - dev_err(dev, "DTI Error: isoc packet status--bad urb length (%d bytes vs %d needed)\n", - urb->actual_length, expected_size); - goto error_parse_buffer; - } packet_status = (struct wa_xfer_packet_status_hwaiso *)(wa->dti_buf); - if (le16_to_cpu(packet_status->wLength) != expected_size) { - dev_err(dev, "DTI Error: isoc packet status--bad length %u\n", - le16_to_cpu(packet_status->wLength)); - goto error_parse_buffer; - } if (packet_status->bPacketType != WA_XFER_ISO_PACKET_STATUS) { dev_err(dev, "DTI Error: isoc packet status--bad type 0x%02x\n", packet_status->bPacketType); @@ -2070,13 +2199,28 @@ static void wa_process_iso_packet_status(struct wahc *wa, struct urb *urb) goto error_bad_seg; seg = xfer->seg[wa->dti_isoc_xfer_seg]; rpipe = xfer->ep->hcpriv; - - /* set urb isoc packet status and length. */ - xfer->urb->iso_frame_desc[seg->index].status = - wa_xfer_status_to_errno( - le16_to_cpu(packet_status->PacketStatus[0].PacketStatus)); - xfer->urb->iso_frame_desc[seg->index].actual_length = - le16_to_cpu(packet_status->PacketStatus[0].PacketLength); + expected_size = sizeof(*packet_status) + + (sizeof(packet_status->PacketStatus[0]) * + seg->isoc_frame_count); + if (urb->actual_length != expected_size) { + dev_err(dev, "DTI Error: isoc packet status--bad urb length (%d bytes vs %d needed)\n", + urb->actual_length, expected_size); + goto error_bad_seg; + } + if (le16_to_cpu(packet_status->wLength) != expected_size) { + dev_err(dev, "DTI Error: isoc packet status--bad length %u\n", + le16_to_cpu(packet_status->wLength)); + goto error_bad_seg; + } + /* isoc packet status and lengths back xfer urb. */ + status_array = packet_status->PacketStatus; + for (seg_index = 0; seg_index < seg->isoc_frame_count; ++seg_index) { + xfer->urb->iso_frame_desc[seg->index].status = + wa_xfer_status_to_errno( + le16_to_cpu(status_array[seg_index].PacketStatus)); + xfer->urb->iso_frame_desc[seg->index].actual_length = + le16_to_cpu(status_array[seg_index].PacketLength); + } if (!xfer->is_inbound) { /* OUT transfer, complete it -- */ |