Transaction lifetime was originally set to 10 frames. That was an arbitrary
number I picked without much thinking :).
I'm changing that to 32 frames because things like interrupt transfers
and such are scheduled at that rate. It seems like 1/32 is accepted as
lowest supported rate. OHCI, for example, defines exactly 32 interrupt
heads.
While testing USB webcam under XP I noticed that interrupt transactions were
being canceled and then resubmitted on a regular basis, which works but is a
waste of CPU cycles. This change fixes that.
All other devices I have are not affected.
Signed-off-by: Max Krasnyansky <[EMAIL PROTECTED]>
---
hw/usb-uhci.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index 62c743d..b90cf78 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -781,7 +781,7 @@ static int uhci_handle_td(UHCIState *s, uint32_t addr,
UHCI_TD *td, uint32_t *in
async = uhci_async_find_td(s, addr, td->token);
if (async) {
/* Already submitted */
- async->valid = 10;
+ async->valid = 32;
if (!async->done)
return 1;
--
1.5.5.1
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
