Hi,
Here's a patch against 2.4.19-pre2 that upgrades the speed of the uhci
driver. This patch was done by Johannes Erdfelt.
thanks,
greg k-h
diff -Nru a/drivers/usb/uhci.c b/drivers/usb/uhci.c
--- a/drivers/usb/uhci.c Mon Mar 4 08:48:59 2002
+++ b/drivers/usb/uhci.c Mon Mar 4 08:48:59 2002
@@ -57,7 +57,6 @@
#include <linux/pm.h>
-
/*
* Version Information
*/
@@ -65,7 +64,6 @@
#define DRIVER_AUTHOR "Linus 'Frodo Rabbit' Torvalds, Johannes Erdfelt, Randy Dunlap,
Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber"
#define DRIVER_DESC "USB Universal Host Controller Interface driver"
-
/*
* debug = 0, no debugging messages
* debug = 1, dump failed URB's except for stalls
@@ -100,6 +98,7 @@
/* If a transfer is still active after this much time, turn off FSBR */
#define IDLE_TIMEOUT (HZ / 20) /* 50 ms */
+#define FSBR_DELAY (HZ / 20) /* 50 ms */
#define MAX_URB_LOOP 2048 /* Maximum number of linked URB's */
@@ -766,7 +765,7 @@
if ((!(urb->transfer_flags & USB_NO_FSBR)) && urbp->fsbr) {
urbp->fsbr = 0;
if (!--uhci->fsbr)
- uhci->skel_term_qh->link = UHCI_PTR_TERM;
+ uhci->fsbrtimeout = jiffies + FSBR_DELAY;
}
spin_unlock_irqrestore(&uhci->frame_list_lock, flags);
@@ -2021,6 +2020,12 @@
u->transfer_flags |= USB_ASYNC_UNLINK | USB_TIMEOUT_KILLED;
uhci_unlink_urb(u);
+ }
+
+ /* Really disable FSBR */
+ if (!uhci->fsbr && uhci->fsbrtimeout && time_after_eq(jiffies,
+uhci->fsbrtimeout)) {
+ uhci->fsbrtimeout = 0;
+ uhci->skel_term_qh->link = UHCI_PTR_TERM;
}
/* enter global suspend if nothing connected */
diff -Nru a/drivers/usb/uhci.h b/drivers/usb/uhci.h
--- a/drivers/usb/uhci.h Mon Mar 4 08:48:58 2002
+++ b/drivers/usb/uhci.h Mon Mar 4 08:48:58 2002
@@ -309,6 +309,7 @@
spinlock_t frame_list_lock;
struct uhci_frame_list *fl; /* P: uhci->frame_list_lock */
int fsbr; /* Full speed bandwidth reclamation */
+ unsigned long fsbrtimeout; /* FSBR delay */
int is_suspended;
/* Main list of URB's currently controlled by this HC */
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