USB: EHCI: report actual_length for iso transfers

commit ec6d67e39f5638c792eb7490bf32586ccb9d8005 upstream.

This patch (as1259b) makes ehci-hcd return the total number of bytes
transferred in urb->actual_length for Isochronous transfers.
Until now, the actual_length value was unaccountably left at 0.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 1d0b49e..18e8741 100644 (file)
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1617,11 +1617,14 @@ itd_complete (
                                desc->status = -EPROTO;
 
                        /* HC need not update length with this error */
-                       if (!(t & EHCI_ISOC_BABBLE))
-                               desc->actual_length = EHCI_ITD_LENGTH (t);
+                       if (!(t & EHCI_ISOC_BABBLE)) {
+                               desc->actual_length = EHCI_ITD_LENGTH(t);
+                               urb->actual_length += desc->actual_length;
+                       }
                } else if (likely ((t & EHCI_ISOC_ACTIVE) == 0)) {
                        desc->status = 0;
-                       desc->actual_length = EHCI_ITD_LENGTH (t);
+                       desc->actual_length = EHCI_ITD_LENGTH(t);
+                       urb->actual_length += desc->actual_length;
                } else {
                        /* URB was too late */
                        desc->status = -EXDEV;
@@ -2012,7 +2015,8 @@ sitd_complete (
                        desc->status = -EPROTO;
        } else {
                desc->status = 0;
-               desc->actual_length = desc->length - SITD_LENGTH (t);
+               desc->actual_length = desc->length - SITD_LENGTH(t);
+               urb->actual_length += desc->actual_length;
        }
        stream->depth -= stream->interval << 3;