This patch adds a convenience function for the commonly performed task
of marking a transfer segment as done. It combines the 3 steps of
setting the segment status, incrementing the segs_done field of the
transfer and checking if the completed segment results in the transfer
also being done.
Signed-off-by: Thomas Pugliese <thomas.pugli...@gmail.com>
---
drivers/usb/wusbcore/wa-xfer.c | 48 ++++++++++++++++++++++++------------------
1 file changed, 27 insertions(+), 21 deletions(-)
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index 5e5343e..3d6b30d 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -392,6 +392,24 @@ out:
}
/*
+ * Mark the given segment as done. Return true if this completes the xfer.
+ * This should only be called for segs that have been submitted to an RPIPE.
+ * Delayed segs are not marked as submitted so they do not need to be marked
+ * as done when cleaning up.
+ *
+ * xfer->lock has to be locked
+ */
+static unsigned __wa_xfer_mark_seg_as_done(struct wa_xfer *xfer,
+ struct wa_seg *seg, enum wa_seg_status status)
+{
+ seg->status = status;
+ xfer->segs_done++;
+
+ /* check for done. */
+ return __wa_xfer_is_done(xfer);
+}
+
+/*
* Search for a transfer list ID on the HCD's URB list
*
* For 32 bit architectures, we use the pointer itself; for 64 bits, a
@@ -821,12 +839,10 @@ error_default:
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);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_ERROR);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (holding_dto) {
@@ -892,12 +908,11 @@ static void wa_seg_iso_pack_desc_cb(struct urb *urb)
}
if (seg->status != WA_SEG_ERROR) {
usb_unlink_urb(seg->dto_urb);
- 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);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg,
+ WA_SEG_ERROR);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
@@ -971,12 +986,10 @@ static void wa_seg_tr_cb(struct urb *urb)
}
usb_unlink_urb(seg->isoc_pack_desc_urb);
usb_unlink_urb(seg->dto_urb);
- 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);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_ERROR);
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
@@ -2285,11 +2298,9 @@ static void wa_xfer_result_chew(struct wahc *wa, struct
wa_xfer *xfer,
goto error_submit_buf_in;
} else {
/* OUT data phase or no data, complete it -- */
- seg->status = WA_SEG_DONE;
seg->result = bytes_transferred;
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_DONE);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
@@ -2453,10 +2464,8 @@ static int wa_process_iso_packet_status(struct wahc *wa,
struct urb *urb)
dti_busy = 1;
} else {
/* OUT transfer or no more IN data, complete it -- */
- seg->status = WA_SEG_DONE;
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_DONE);
}
spin_unlock_irqrestore(&xfer->lock, flags);
wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
@@ -2547,12 +2556,11 @@ static void wa_buf_in_cb(struct urb *urb)
}
} else {
rpipe = xfer->ep->hcpriv;
- seg->status = WA_SEG_DONE;
dev_dbg(dev, "xfer %p#%u: data in done (%zu bytes)\n",
xfer, seg->index, seg->result);
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg,
+ WA_SEG_DONE);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
@@ -2575,12 +2583,10 @@ static void wa_buf_in_cb(struct urb *urb)
"exceeded, resetting device\n");
wa_reset_all(wa);
}
- seg->status = WA_SEG_ERROR;
seg->result = urb->status;
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
__wa_xfer_abort(xfer);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_ERROR);
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
--
1.8.3.2
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