USB: remove Iso status value in uhci-hcd

This patch (968) changes the way uhci-hcd reports status for
Isochronous URBs.  Until now urb->status has been set to the last
detected error code.  But other HCDs don't do this; they leave the
status set to 0 and report errors only in the individual iso packet
descriptors.  So this patch removes the extra computation and makes
uhci-hcd behave like the others.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 1b3d234..e46d2b0 100644 (file)
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -146,7 +146,6 @@ struct uhci_qh {
        short phase;                    /* Between 0 and period-1 */
        short load;                     /* Periodic time requirement, in us */
        unsigned int iso_frame;         /* Frame # for iso_packet_desc */
-       int iso_status;                 /* Status for Isochronous URBs */
 
        int state;                      /* QH_STATE_xxx; see above */
        int type;                       /* Queue type (control, bulk, etc) */

diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index bff200c..793a046 100644 (file)
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -1324,7 +1324,6 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb,
        if (list_empty(&qh->queue)) {
                qh->iso_packet_desc = &urb->iso_frame_desc[0];
                qh->iso_frame = urb->start_frame;
-               qh->iso_status = 0;
        }
 
        qh->skel = SKEL_ISO;
@@ -1361,18 +1360,15 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb)
                        qh->iso_packet_desc->actual_length = actlength;
                        qh->iso_packet_desc->status = status;
                }
-
-               if (status) {
+               if (status)
                        urb->error_count++;
-                       qh->iso_status = status;
-               }
 
                uhci_remove_td_from_urbp(td);
                uhci_free_td(uhci, td);
                qh->iso_frame += qh->period;
                ++qh->iso_packet_desc;
        }
-       return qh->iso_status;
+       return 0;
 }
 
 static int uhci_urb_enqueue(struct usb_hcd *hcd,
@@ -1517,7 +1513,6 @@ __acquires(uhci->lock)
 
                qh->iso_packet_desc = &nurb->iso_frame_desc[0];
                qh->iso_frame = nurb->start_frame;
-               qh->iso_status = 0;
        }
 
        /* Take the URB off the QH's queue.  If the queue is now empty,
@@ -1586,7 +1581,7 @@ static void uhci_scan_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
                }
 
                uhci_giveback_urb(uhci, qh, urb);
-               if (status < 0 && qh->type != USB_ENDPOINT_XFER_ISOC)
+               if (status < 0)
                        break;
        }