moved desc for one scanner, added packet counting code to backend

ChangeLog

@@ -1,3 +1,10 @@
+2003-12-09  Allan Noah <anoah at pfeiffer dot edu>
+	* doc/desc/{fujitsu|ma1509}.desc: move fujitsu fi-4110eox2 section
+
+2003-12-09  Allan Noah <anoah at pfeiffer dot edu>
+	* backend/fujitsu.c: count USB packets to prevent timeouts, perhaps
+          due to DATA0/1 toggle problems in certain scanners
+
 2003-12-07  Peter Fales <peter@fales-lorenz.net>
 	* acinclude.m4, aclocal.m4, configure:  remove "enabling GPHOTO2"
 	  messages printed by configure

backend/fujitsu.c

@@ -360,6 +360,9 @@ static int forceModel = -1;
 /* Also set via config file. */
 static int scsiBuffer = 64 * 1024;
 
+/* flaming hack to get USB scanners
+   working without timeouts under linux */
+static unsigned int cmd_count = 0;
 
 /*
  * required for compressed data transfer. sense_handler has to tell
@@ -3024,6 +3027,8 @@ do_usb_cmd (int fd, unsigned char *cmd,
 retry:
     hexdump (IO_CMD, "<cmd<", cmd, cmd_len);
 
+    cmd_count++;
+
     if (cmd_len > 0) op_code = ((int)cmd[0]) & 0xff;
 
     if ((cmd_len+USB_CMD_HEADER_BYTES) > (int)sizeof(buf)) {
@@ -3252,6 +3257,15 @@ free_scanner (struct fujitsu *s)
   if (ret)
     return ret;
 
+  /* flaming hack cause some usb scanners (fi-4x20) fail 
+     to work properly on next connection if an odd number
+      of commands are sent to the scanner. */
+  if(s->connection == SANE_FUJITSU_USB && cmd_count % 2){
+    ret = get_hardware_status(s);
+    if (ret)
+      return ret;
+  }
+
   DBG (10, "free_scanner: ok\n");
   return ret;
 }

doc/descriptions/fujitsu.desc

@@ -49,10 +49,6 @@
 :interface "SCSI"
 :status :good
 
-:model "fi-4110EOX2"
-:interface "USB"
-:status :unsupported
-
 :model "fi-4120C"
 :interface "SCSI USB"
 :status :good

doc/descriptions/ma1509.desc

@@ -30,6 +30,12 @@
 :status :good
 :comment "Works upto 600 dpi. No support for TA and ADF yet."				
 				
+:mfg "Fujitsu"		; name a manufacturer
+:model "fi-4110EOX2"
+:interface "USB"
+:status :unsupported
+:comment "Uses ma1509 chip, but very different from other scanners supported by backend"
+:url "http://www2.pfeiffer.edu/~anoah/fujitsu/"
 
 ; :comment and :url specifiers are optional after :mfg, :model, :desc,
 ; and at the top-level.