From 966ef337100c4143408a68a609bef8054442b65c Mon Sep 17 00:00:00 2001
From: Povilas Kanapickas <povilas@radix.lt>
Date: Sat, 18 May 2019 14:56:00 +0300
Subject: [PATCH] genesys: Fix pixel calculation during calibration on gl843

---
 backend/genesys_gl843.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/backend/genesys_gl843.cc b/backend/genesys_gl843.cc
index 51a84f811..dfafeaef3 100644
--- a/backend/genesys_gl843.cc
+++ b/backend/genesys_gl843.cc
@@ -2821,6 +2821,9 @@ gl843_init_regs_for_shading (Genesys_Device * dev)
 				 SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
 				 SCAN_FLAG_IGNORE_LINE_DISTANCE);
 
+  // the pixel number may be updated to conform to scanner constraints
+  dev->calib_pixels = dev->current_setup.pixels;
+
   if (status != SANE_STATUS_GOOD)
     {
       DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status));