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authorKarsten Wiese <fzu@wemgehoertderstaat.de>2007-12-30 21:55:05 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2008-02-01 14:35:02 -0800
commit3b6fcfd0664aeac6ae2fd1231f04b3ed24723c1e (patch)
tree91f6bf59435039eefcd4a931bed274a0b33882f1 /drivers/usb/host/ehci.h
parent91bc4d31e81b15aa6e2d075307b8727041f2e2d1 (diff)
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USB: ehci saves some memory in ISO transfer descriptors
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 <fzu@wemgehoertderstaat.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci.h')
-rw-r--r--drivers/usb/host/ehci.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index f83472856a8..42969e9d8c4 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -602,7 +602,6 @@ struct ehci_itd {
unsigned frame; /* where scheduled */
unsigned pg;
unsigned index[8]; /* in urb->iso_frame_desc */
- u8 usecs[8];
} __attribute__ ((aligned (32)));
/*-------------------------------------------------------------------------*/