Exclude the frame list rollover interrupt from the interrupts we are interested

in. We do not enable this interrupt and if we still "handle" it in our
interrupt handler we might prevent the interrupt from reaching the real intended
handler in a shared interrupt setup. Not sure if this could have happend at
all, but this is more correct in any case.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24965 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/busses/usb/ehci.cpp

@@ -813,11 +813,6 @@ EHCI::Interrupt()
 		acknowledge |= EHCI_USBSTS_PORTCHANGE;
 	}
 
-	if (status & EHCI_USBSTS_FLROLLOVER) {
-		TRACE(("usb_ehci: frame list rolled over\n"));
-		acknowledge |= EHCI_USBSTS_FLROLLOVER;
-	}
-
 	if (status & EHCI_USBSTS_INTONAA) {
 		TRACE(("usb_ehci: interrupt on async advance\n"));
 		acknowledge |= EHCI_USBSTS_INTONAA;

src/add-ons/kernel/busses/usb/ehci_hardware.h

@@ -56,7 +56,7 @@
 #define EHCI_USBSTS_PORTCHANGE	(1 << 2)	// Port Change Detected
 #define EHCI_USBSTS_USBERRINT	(1 << 1)	// USB Error Interrupt
 #define EHCI_USBSTS_USBINT		(1 << 0)	// USB Interrupt
-#define EHCI_USBSTS_INTMASK		0x3f
+#define EHCI_USBSTS_INTMASK		0x37		// All except frame list rollover
 
 
 // USB Interrupt Enable Register (EHCI Spec 2.3.3)