diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig
index db64c90..b104430 100644
--- a/drivers/usb/net/Kconfig
+++ b/drivers/usb/net/Kconfig
@@ -219,17 +219,21 @@
 	  by some sample firmware from Epson.
 
 config USB_ZAURUS
-	boolean "Sharp Zaurus (stock ROMs)"
+	boolean "Sharp Zaurus (stock ROMs) and compatible"
 	depends on USB_USBNET
 	select CRC32
 	default y
 	help
 	  Choose this option to support the usb networking links used by
 	  Zaurus models like the SL-5000D, SL-5500, SL-5600, A-300, B-500.
+	  This also supports some related device firmware, as used in some
+	  PDAs from Olympus and some cell phones from Motorola.
 
-	  If you install an alternate ROM image, you may no longer need
-	  to support this protocol.  Only the "eth-fd" driver really needs
-	  this non-conformant variant of CDC Ethernet protocol.
+	  If you install an alternate ROM image, such as the Linux 2.6 based
+	  versions of OpenZaurus, you should no longer need to support this
+	  protocol.  Only the "eth-fd" or "net_fd" drivers in these devices
+	  really need this non-conformant variant of CDC Ethernet (or in
+	  some cases CDC MDLM) protocol, not "g_ether".
 
 config USB_CDCETHER
 	boolean "CDC Ethernet support (smart devices such as cable modems)"
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index f6bc6b3..85476e7 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -1517,6 +1517,26 @@
 	}
 }
 
+#endif	/* NEED_GENERIC_CDC */
+
+
+#ifdef	CONFIG_USB_CDCETHER
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * Communications Device Class, Ethernet Control model
+ *
+ * Takes two interfaces.  The DATA interface is inactive till an altsetting
+ * is selected.  Configuration data includes class descriptors.
+ *
+ * This should interop with whatever the 2.4 "CDCEther.c" driver
+ * (by Brad Hards) talked with.
+ *
+ *-------------------------------------------------------------------------*/
+
+#include <linux/ctype.h>
+
 
 static void dumpspeed (struct usbnet *dev, __le32 *speeds)
 {
@@ -1567,26 +1587,6 @@
 	}
 }
 
-#endif	/* NEED_GENERIC_CDC */
-
-
-#ifdef	CONFIG_USB_CDCETHER
-#define	HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * Communications Device Class, Ethernet Control model
- * 
- * Takes two interfaces.  The DATA interface is inactive till an altsetting
- * is selected.  Configuration data includes class descriptors.
- *
- * This should interop with whatever the 2.4 "CDCEther.c" driver
- * (by Brad Hards) talked with.
- *
- *-------------------------------------------------------------------------*/
-
-#include <linux/ctype.h>
-
 static u8 nibble (unsigned char c)
 {
 	if (likely (isdigit (c)))
@@ -2765,7 +2765,7 @@
 			}
 			/* expect bcdVersion 1.0, ignore */
 			if (memcmp(&desc->bGUID, blan_guid, 16)
-				    || memcmp(&desc->bGUID, blan_guid, 16) ) {
+				    && memcmp(&desc->bGUID, blan_guid, 16) ) {
 				/* hey, this one might _really_ be MDLM! */
 				dev_dbg (&intf->dev, "MDLM guid\n");
 				goto bad_desc;
@@ -2797,11 +2797,13 @@
 			 *  - bPad (ignored, for PADAFTER -- BLAN-only)
 			 * bits are:
 			 *  - 0x01 -- Zaurus framing (add CRC)
-			 *  - 0x02 -- PADBEFORE
-			 *  - 0x04 -- PADAFTER
+			 *  - 0x02 -- PADBEFORE (CRC includes some padding)
+			 *  - 0x04 -- PADAFTER (some padding after CRC)
 			 *  - 0x08 -- "fermat" packet mangling (for hw bugs)
+			 * the PADBEFORE appears not to matter; we interop
+			 * with devices that use it and those that don't.
 			 */
-			if (detail->bDetailData[1] != 0x01) {
+			if ((detail->bDetailData[1] & ~02) != 0x01) {
 				/* bmDataCapabilites == 0 would be fine too,
 				 * but framing is minidriver-coupled for now.
 				 */
@@ -4071,9 +4073,6 @@
 	USB_DEVICE (0x8086, 0x07d3),	// "blob" bootloader
 	.driver_info =	(unsigned long) &blob_info,
 }, {
-	USB_DEVICE (0x22b8, 0x600c),	// USBNET Motorola E680
-	.driver_info =	(unsigned long) &linuxdev_info,
-}, {
 	// Linux Ethernet/RNDIS gadget on pxa210/25x/26x
 	// e.g. Gumstix, current OpenZaurus, ...
 	USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),