Byteblaster driver for Linux 2.6

[Altera_Forum]

Has anyone successfully ported the ByteblasterII device driver to the version 2.6 kernel ? 

 Would appreciate any info on how this can be achieved.  I have managed to generate the byteblaster.ko file but find that insmod fails with the following error:  error inserting 'byteblaster.ko': -1 device or resource busy   This error is returned by devfs_register_chrdev but I'm not sure why this would occur, no other devices are connected to the port. Any suggestions ?  thanks

[Altera_Forum]

Here is a patch for byteblaster on 2.6: 

 diff -urN byteblaster.orig/byteblaster.c byteblaster/byteblaster.c --- byteblaster.orig/byteblaster.c 2004-11-30 12:11:14.000000000 +0100 +++ byteblaster/byteblaster.c 2005-02-09 12:10:24.000000000 +0100 @@ -66,6 +66,7 @@ # include <linux/module.h> # include <linux/kernel.h> # include <linux/devfs_fs_kernel.h> +#include <linux/fs.h> # include <linux/slab.h> # include <linux/smp_lock.h> # include <linux/sched.h> @@ -88,7 +89,7 @@  struct byteblaster_t {  struct pardevice * dev;  unsigned long flags; - devfs_handle_t devfs_handle; + dev_t devfs_handle;  struct semaphore port_mutex;    char * read_fifo; @@ -419,10 +420,10 @@  return;    sprintf (name, "byteblaster%d", i); - byteblaster.devfs_handle = devfs_register (null, name, - devfs_fl_default, byteblaster_major, i, - s_ifchr | s_irugo | s_iwugo, - &byteblaster_fops, null); + byteblaster.devfs_handle = NULL; //devfs_register (NULL, name, +// DEVFS_FL_DEFAULT, byteblaster_major, i, +// S_IFCHR | S_IRUGO | S_IWUGO, +// &byteblaster_fops, NULL);    printk(KERN_INFO "byteblaster%d: using %s.\n", i, port->name);   @@ -441,7 +442,7 @@  if (byteblaster.dev != null && byteblaster.dev->port == port) {    parport_unregister_device(byteblaster.dev); - devfs_unregister(byteblaster.devfs_handle); + //devfs_unregister(byteblaster.devfs_handle);    byteblaster.dev = NULL;  byteblaster.devfs_handle = null; @@ -468,7 +469,7 @@  byteblaster.read_fifo = NULL;  }   - err = devfs_register_chrdev(byteblaster_major, "byteblaster", &byteblaster_fops); + err = register_chrdev(byteblaster_major, "byteblaster", &byteblaster_fops);  if (err < 0)  return err;   @@ -488,12 +489,12 @@    parport_unregister_driver (&byteblaster_driver);   - devfs_unregister_chrdev(byteblaster_major, "byteblaster"); + unregister_chrdev(byteblaster_major, "byteblaster");    for (i = 0 ; i < BYTEBLASTER_MAX ; i++)  if (byteblaster.dev != null) {  parport_unregister_device(byteblaster.dev); - devfs_unregister(byteblaster.devfs_handle); + //devfs_unregister(byteblaster.devfs_handle);  }  }   diff -urN byteblaster.orig/Makefile byteblaster/Makefile --- byteblaster.orig/Makefile 2004-11-30 12:11:14.000000000 +0100 +++ byteblaster/Makefile 2005-02-09 14:42:16.222653771 +0100 @@ -15,25 +15,38 @@ # This is the default location of the  # VER = $(shell uname -r) # INCLUDEDIR=/lib/modules/$(VER)/build/include -include .config.make +#include .config.make   -CFLAGS= -D__KERNEL__ -DMODULE -D__SMP__ -O3 -Wall -I$(INCLUDEDIR) +#CFLAGS= -D__KERNEL__ -DMODULE -D__SMP__ -O3 -Wall -I$(INCLUDEDIR)   # Comment out the next line if you don&#39;t want kernel symbol versioning. -CFLAGS += -DMODVERSIONS -include $(INCLUDEDIR)/linux/modversions.h +#CFLAGS += -DMODVERSIONS -include $(INCLUDEDIR)/linux/modversions.h   -OBJS = byteblaster.o +#OBJS = byteblaster.o   -byteblaster.o : byteblaster.c Makefile +ifneq ($(KERNELRELEASE),) + obj-m := byteblaster.o   -install: byteblaster.o jtagd-init +else + VER := $(shell uname -r) + KDIR := /lib/modules/$(VER)/build + PWD := $(shell pwd) + +default: + $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules +endif + + +#byteblaster.o : byteblaster.c Makefile + +install: byteblaster.ko jtagd-init  install -d /lib/modules/$(VER)/kernel/misc/ - install -c byteblaster.o /lib/modules/$(VER)/kernel/misc/byteblaster.o + install -c byteblaster.ko /lib/modules/$(VER)/kernel/misc/byteblaster.ko  install -c jtagd-init /etc/rc.d/init.d/jtagd  /sbin/chkconfig --add jtagd  /sbin/depmod -aq  /etc/rc.d/init.d/jtagd start    clean: - rm *.o - + rm -f *.ko *.o .*.cmd byteblaster.mod.c + rm -rf .tmp_versions

[Altera_Forum]

Thanks, I will give it a try.