#include <linux/vmalloc.h>#include <linux/module.h>#include <linux/fs.h>#include <linux/mm.h>#include <linux/slab.h>#include <asm/uaccess.h>static int do_mod_firmware_load(const char *fn, char **fp){	struct file* filp;	long l;	char *dp;	loff_t pos;	filp = filp_open(fn, 0, 0);	if (IS_ERR(filp))	{		printk(KERN_INFO "Unable to load '%s'.\n", fn);		return 0;	}	l = filp->f_dentry->d_inode->i_size;	if (l <= 0 || l > 131072)	{		printk(KERN_INFO "Invalid firmware '%s'\n", fn);		filp_close(filp, current->files);		return 0;	}	dp = vmalloc(l);	if (dp == NULL)	{		printk(KERN_INFO "Out of memory loading '%s'.\n", fn);		filp_close(filp, current->files);		return 0;	}	pos = 0;	if (vfs_read(filp, dp, l, &pos) != l)	{		printk(KERN_INFO "Failed to read '%s'.\n", fn);		vfree(dp);		filp_close(filp, current->files);		return 0;	}	filp_close(filp, current->files);	*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 *	an ioctl call and a setup application. This function may disappear *	in future. */ 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;}