From c191f766e13676ba31ec253385a6f08cd930855c Mon Sep 17 00:00:00 2001
From: robertl <robertl>
Date: Sat, 21 Feb 2009 19:06:26 +0000
Subject: [PATCH] Rework Garmin transparency device matching to work with more
 devices. From Google.

---
 jeeps/gpslibusb.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/jeeps/gpslibusb.c b/jeeps/gpslibusb.c
index 2075c4b77..3397c2c7b 100644
--- a/jeeps/gpslibusb.c
+++ b/jeeps/gpslibusb.c
@@ -359,20 +359,17 @@ int garmin_usb_scan(libusb_unit_data *lud, int req_unit_number)
 		struct usb_device *dev;
 
 		for (dev = bus->devices; dev; dev = dev->next) {
-			/* Probably too promiscious of a match, but since
-			 * Garmin doesn't document the _proper_ matching,
-			 * we just take the easy way out for now.
-			 * Unfortunatey, blowing on DeviceClass == Mass storage
-			 * doesn't work on CO, at least.
+			/* 
+			 * Exclude Mass Storage devices (CO, OR, Nuvi, etc.) 
+			 * from this scan.
+			 * At least on Mac, bDeviceClass isn't 
+			 * USB_MASS_STORAGE as it should be (perhaps because
+			 * the storage driver has already bound to it?) so
+			 * we fondle only the proprietary class devices.
 			 */
 			if (dev->descriptor.idVendor == GARMIN_VID && 
-								dev->config) {
-				switch (dev->descriptor.idProduct) {
-					case 0x19:  // Nuvi;
-					case 0x2244:  // Zumo;
-					case 0x2295:  // CO;
-						continue;
-				}
+			    dev->config &&
+				dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC ) {
 				if (req_unit_number < 0) {
 					garmin_usb_start(dev, lud);	
 					/* 
-- 
2.30.2