text: #include <linux/vmalloc.h>
  #include <linux/module.h>
  #include <linux/fs.h>
  #include <linux/file.h>
  #include <linux/mm.h>
  #include <linux/sched.h>
  #include <asm/uaccess.h>
  #include "oss/sound_firmware.h"
  
  static int do_mod_firmware_load(const char *fn, char **fp)
  {
  	struct file* filp;
  	long l;
  	char *dp;
  
  	filp = filp_open(fn, 0, 0);
  	if (IS_ERR(filp))
  	{
  		printk(KERN_INFO "Unable to load '%s'.\n", fn);
  		return 0;
  	}
  	l = i_size_read(file_inode(filp));
  	if (l <= 0 || l > 131072)
  	{
  		printk(KERN_INFO "Invalid firmware '%s'\n", fn);
  		fput(filp);
  		return 0;
  	}
  	dp = vmalloc(l);
  	if (dp == NULL)
  	{
  		printk(KERN_INFO "Out of memory loading '%s'.\n", fn);
  		fput(filp);
  		return 0;
  	}
  	if (kernel_read(filp, 0, dp, l) != l)
  	{
  		printk(KERN_INFO "Failed to read '%s'.\n", fn);
  		vfree(dp);
  		fput(filp);
  		return 0;
  	}
  	fput(filp);
  	*fp = dp;
  	return (int) l;
  }
  
  /**
   *	mod_firmware_load - load sound driver firmware
   *	@fn: filename
   *	@fp: return for the buffer.
   *
   *	Load the firmware for a sound module (up to 128K) into a buffer.
   *	The buffer is returned in *fp. It is allocated with vmalloc so is
   *	virtually linear and not DMAable. The caller should free it with
   *	vfree when finished.
   *
   *	The length of the buffer is returned on a successful load, the
   *	value zero on a failure.
   *
   *	Caution: This API is not recommended. Firmware should be loaded via
   *	request_firmware.
   */
   
  int mod_firmware_load(const char *fn, char **fp)
  {
  	int r;
  	mm_segment_t fs = get_fs();
  
  	set_fs(get_ds());
  	r = do_mod_firmware_load(fn, fp);
  	set_fs(fs);
  	return r;
  }
  EXPORT_SYMBOL(mod_firmware_load);
  
  MODULE_LICENSE("GPL");
  