diff --git a/adb/usb_linux.c b/adb/usb_linux.c
index 95c2ce6..537122d 100644
--- a/adb/usb_linux.c
+++ b/adb/usb_linux.c
@@ -318,9 +318,13 @@
                     found_device = 1;
                     break;
                 } else {
-                        // skip to next interface
-                    bufptr += (interface->bNumEndpoints * USB_DT_ENDPOINT_SIZE);
-                }
+                    // seek next interface descriptor
+                    if (i < interfaces - 1) {
+                        while (bufptr[1] != USB_DT_INTERFACE) {
+                            bufptr += bufptr[0];
+                        }
+                    }
+                 }
             } // end of for
 
             adb_close(fd);
diff --git a/adb/usb_vendors.c b/adb/usb_vendors.c
index 9a15146..f8c54d7 100644
--- a/adb/usb_vendors.c
+++ b/adb/usb_vendors.c
@@ -39,11 +39,17 @@
 #define VENDOR_ID_GOOGLE        0x18d1
 // HTC's USB Vendor ID
 #define VENDOR_ID_HTC           0x0bb4
+// Samsung's USB Vendor ID
+#define VENDOR_ID_SAMSUNG       0x04e8
+// Motorola's USB Vendor ID
+#define VENDOR_ID_MOTOROLA      0x22b8
 
 /** built-in vendor list */
 int builtInVendorIds[] = {
     VENDOR_ID_GOOGLE,
     VENDOR_ID_HTC,
+    VENDOR_ID_SAMSUNG,
+    VENDOR_ID_MOTOROLA,
 };
 
 #define BUILT_IN_VENDOR_COUNT    (sizeof(builtInVendorIds)/sizeof(builtInVendorIds[0]))