static ssize_t depth_write(struct file * file, char const * buf, size_t count, loff_t * offset) 
static ssize_t depth_write(struct file * file, char const __user * buf, size_t count, loff_t * offset) 
static ssize_t depth_write(struct file * file, char const * buf, size_t count, loff_t * offset){	unsigned long val;	int retval;	if (*offset)		return -EINVAL;	retval = oprofilefs_ulong_from_user(&val, buf, count);	if (retval)		return retval;	retval = oprofile_set_backtrace(val);	if (retval)		return retval;	return count;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/9be80c0f0f61e8c0572d7c9d73b3ef839754a953/oprofile_files.c/buggy/drivers/oprofile/oprofile_files.c