[PATCH] USB: ehci and buggy BIOS handoff

Be more forgiving of buggy BIOS code, which never hands the
EHCI controller to Linux.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/usb/host/ehci-hcd.c

@@ -289,7 +289,7 @@ static void ehci_watchdog (unsigned long param)
 static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap)
 {
 	if (cap & (1 << 16)) {
-		int msec = 500;
+		int msec = 5000;
 		struct pci_dev *pdev = to_pci_dev(ehci->hcd.self.controller);
 
 		/* request handoff to OS */
@@ -305,7 +305,10 @@ static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap)
 		if (cap & (1 << 16)) {
 			ehci_err (ehci, "BIOS handoff failed (%d, %04x)\n",
 				where, cap);
-			return 1;
+			// some BIOS versions seem buggy...
+			// return 1;
+			ehci_warn (ehci, "continuing after BIOS bug...\n");
+			return 0;
 		} 
 		ehci_dbg (ehci, "BIOS handoff succeeded\n");
 	}