This is a note to let you know that I've just added the patch titled
Subject: USB: EHCI: report actual_length for iso transfers
to my gregkh-2.6 tree. Its filename is
usb-ehci-report-actual_length-for-iso-transfers.patch
This tree can be found at
http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/
>From stern@xxxxxxxxxxxxxxxxxxx Fri Jul 10 14:42:34 2009
From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Date: Mon, 29 Jun 2009 14:34:59 -0400 (EDT)
Subject: USB: EHCI: report actual_length for iso transfers
To: Greg KH <greg@xxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>, USB list <linux-usb@xxxxxxxxxxxxxxx>
Message-ID: <Pine.LNX.4.44L0.0906291432170.17436-100000@xxxxxxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxxxxx>
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/host/ehci-sched.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1619,11 +1619,14 @@ 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;
@@ -2014,7 +2017,8 @@ 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;
--
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