From: Karsten Wiese <[EMAIL PROTECTED]>
In the EHCI driver, itd->usecs[8] is used in periodic_usecs(), indexed by
uframe. For an ITD's unused uframes it is 0, else it contains the same
value as itd->stream->usecs. To check if an ITD's uframe is used, we can
instead test itd->hw_transaction[uframe]: if used, it will be nonzero no
matter what endianess is used.
This patch replaces those two uses, eliminates itd->usecs[], and saves
eight bytes from each ITD.
Signed-off-by: Karsten Wiese <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
---
drivers/usb/host/ehci-sched.c | 4 ++--
drivers/usb/host/ehci.h | 1 -
2 files changed, 2 insertions(+), 3 deletions(-)
--- g26.orig/drivers/usb/host/ehci-sched.c
+++ g26/drivers/usb/host/ehci-sched.c
@@ -119,7 +119,8 @@ periodic_usecs (struct ehci_hcd *ehci, u
q = &q->fstn->fstn_next;
break;
case Q_TYPE_ITD:
- usecs += q->itd->usecs [uframe];
+ if (q->itd->hw_transaction[uframe])
+ usecs += q->itd->stream->usecs;
hw_p = &q->itd->hw_next;
q = &q->itd->itd_next;
break;
@@ -1536,7 +1537,6 @@ itd_link_urb (
uframe = next_uframe & 0x07;
frame = next_uframe >> 3;
- itd->usecs [uframe] = stream->usecs;
itd_patch(ehci, itd, iso_sched, packet, uframe);
next_uframe += stream->interval;
--- g26.orig/drivers/usb/host/ehci.h
+++ g26/drivers/usb/host/ehci.h
@@ -594,7 +594,6 @@ struct ehci_itd {
unsigned frame; /* where scheduled */
unsigned pg;
unsigned index[8]; /* in urb->iso_frame_desc */
- u8 usecs[8];
} __attribute__ ((aligned (32)));
/*-------------------------------------------------------------------------*/
-
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