circle_patch.diff

diff --git a/addon/linux/bug.h b/addon/linux/bug.h
index 6b80534d..656accef 100644
--- a/addon/linux/bug.h
+++ b/addon/linux/bug.h
@@ -9,7 +9,7 @@
 extern "C" {
 #endif
 
-#define BUG_ON(exp)	assert (!(exp))
+#define BUG_ON(exp)    ;
 #define BUG()		assert (0)
 
 void __warn (const char *file, const int line);
diff --git a/include/circle/sysconfig.h b/include/circle/sysconfig.h
index 566e6eb7..fed5f043 100644
--- a/include/circle/sysconfig.h
+++ b/include/circle/sysconfig.h
@@ -155,7 +155,7 @@
 // single core applications, because this may slow down the system
 // because multiple cores may compete for bus time without use.
 
-//#define ARM_ALLOW_MULTI_CORE
+#define ARM_ALLOW_MULTI_CORE
 
 #endif
 
@@ -236,7 +236,7 @@
 // used for other purposes. This option has no influence on the
 // Raspberry Pi 4 and 5.
 
-//#define USE_USB_FIQ
+#define USE_USB_FIQ
 
 #ifdef USE_USB_FIQ
 #define USE_USB_SOF_INTR
@@ -251,7 +251,7 @@
 
 #ifndef NO_SCREEN_DMA_BURST_LENGTH
 #ifndef SCREEN_DMA_BURST_LENGTH
-#define SCREEN_DMA_BURST_LENGTH	2
+#define NO_SCREEN_DMA_BURST_LENGTH
 #endif
 #endif

diff --git a/lib/usb/usbkeyboard.cpp b/lib/usb/usbkeyboard.cpp
index 05fe2fab..cd375e9a 100644
--- a/lib/usb/usbkeyboard.cpp
+++ b/lib/usb/usbkeyboard.cpp
@@ -61,8 +61,12 @@ boolean CUSBKeyboardDevice::Configure (void)
 	// which has to be ignored.
 	const TUSBDeviceDescriptor *pDeviceDesc = GetDevice ()->GetDeviceDescriptor ();
 	assert (pDeviceDesc != 0);
+	const TUSBHIDDescriptor *pHIDDesc =
+		(const TUSBHIDDescriptor *) GetDescriptor (DESCRIPTOR_HID);
 	if (   pDeviceDesc->idVendor == 0x1C59
-	    && pDeviceDesc->idProduct == 0x99)
+	    && pDeviceDesc->idProduct == 0x99
+	    && pHIDDesc != 0
+	    && pHIDDesc->wReportDescriptorLength == 78)
 	{
 		m_nReportSize++;
 	}