genesys: Don't try to turn off XPA lamp when shutting down regular lamp

backend/genesys/command_set_common.cpp

@@ -143,17 +143,7 @@ void CommandSetCommon::set_xpa_lamp_power(Genesys_Device& dev, bool set) const
         }
     }
 
-    // BUG: we're currently calling the function in shut down path of regular lamp
-    if (set) {
-        throw SaneException("Unexpected code path entered");
-    }
-
-    GenesysRegisterSettingSet regs = {
-        { 0xa6, 0x40, 0x70 },
-    };
-    apply_reg_settings_to_device(dev, regs);
-    // TODO: throw exception when we're only calling this function in error return path
-    // throw SaneException("Could not find XPA lamp settings");
+    throw SaneException("Could not find XPA lamp settings");
 }
 
 

backend/genesys/gl843.cpp

@@ -1550,9 +1550,7 @@ void CommandSetGl843::end_scan(Genesys_Device* dev, Genesys_Register_Set* reg,
     // post scan gpio
     dev->interface->write_register(0x7e, 0x00);
 
-    // turn off XPA lamp if needed
-    // BUG: the if condition below probably shouldn't be enabled when XPA is off
-    if (reg->state.is_xpa_on || reg->state.is_lamp_on) {
+    if (reg->state.is_xpa_on) {
         dev->cmd_set->set_xpa_lamp_power(*dev, false);
     }