From b0edb1cd99ad5438f1ae985749e2b8ba4b9a7ff7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Voltz?= <stef.dev@free.fr>
Date: Mon, 11 Feb 2013 21:59:21 +0100
Subject: [PATCH] putative fix for SUB data transfer problem

---
 backend/genesys_gl841.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/backend/genesys_gl841.c b/backend/genesys_gl841.c
index 0bb649a32..8bf27388e 100644
--- a/backend/genesys_gl841.c
+++ b/backend/genesys_gl841.c
@@ -5178,6 +5178,12 @@ gl841_init (Genesys_Device * dev)
   /* ASIC reset */
   RIE (sanei_genesys_write_register (dev, 0x0e, 0x00));
 
+  /* firmware command, possibly related to USB transfer mode */
+  if (dev->model->gpo_type == GPO_CANONLIDE35) 
+    {
+      RIE (sanei_genesys_write_0x8c (dev, 0x10, 0xa4));
+    }
+
   /* Write initial registers */
   RIE (gl841_bulk_write_register
        (dev, dev->reg, GENESYS_GL841_MAX_REGS));