# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.597   -> 1.598  
#	drivers/usb/usb-ohci.c	1.26    -> 1.27   
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/08/20	greg@kroah.com	1.598
# USB: usb-ohci bug fix for slow machines and cardbus bug fix.
# --------------------------------------------
#
diff -Nru a/drivers/usb/usb-ohci.c b/drivers/usb/usb-ohci.c
--- a/drivers/usb/usb-ohci.c	Wed Aug 21 11:47:13 2002
+++ b/drivers/usb/usb-ohci.c	Wed Aug 21 11:47:13 2002
@@ -384,6 +384,8 @@
 	__u32			temp, ndp, i;
 
 	temp = roothub_a (controller);
+	if (temp == ~(u32)0)
+		return;
 	ndp = (temp & RH_A_NDP);
 
 	if (verbose) {
@@ -1626,11 +1628,6 @@
 			if (tdHeadP == tdTailP) {
 				if (ed->state == ED_OPER)
 					ep_unlink(ohci, ed);
-				td_free (ohci, tdTailP);
-				ed->hwINFO = cpu_to_le32 (OHCI_ED_SKIP);
-				ed->state = ED_NEW;
-				hash_free_ed(ohci, ed);
-				--(usb_to_ohci (ohci->dev[edINFO & 0x7F]))->ed_cnt;
 			} else
    	 			ed->hwINFO &= ~cpu_to_le32 (OHCI_ED_SKIP);
    	 	}
@@ -2301,9 +2298,19 @@
 	struct ohci_regs * regs = ohci->regs;
  	int ints; 
 
-	if ((ohci->hcca->done_head != 0) && !(le32_to_cpup (&ohci->hcca->done_head) & 0x01)) {
+	/* avoid (slow) readl if only WDH happened */
+	if ((ohci->hcca->done_head != 0)
+			&& !(le32_to_cpup (&ohci->hcca->done_head) & 0x01)) {
 		ints =  OHCI_INTR_WDH;
-	} else if ((ints = (readl (&regs->intrstatus) & readl (&regs->intrenable))) == 0) {
+
+	/* cardbus/... hardware gone before remove() */
+	} else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
+		ohci->disabled++;
+		err ("%s device removed!", ohci->ohci_dev->slot_name);
+		return;
+
+	/* interrupt for some other device? */
+	} else if ((ints &= readl (&regs->intrenable)) == 0) {
 		return;
 	}