#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/smp_lock.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
static int prng_open(struct inode *inode, struct file *file)
{
+ cycle_kernel_lock();
return nonseekable_open(inode, file);
}
int ret = 0;
int tmp;
- /* nbytes can be arbitrary long, we spilt it into chunks */
+ /* nbytes can be arbitrary length, we split it into chunks */
while (nbytes) {
/* same as in extract_entropy_user in random.c */
if (need_resched()) {
return ret;
}
-static struct file_operations prng_fops = {
+static const struct file_operations prng_fops = {
.owner = THIS_MODULE,
.open = &prng_open,
.release = NULL,
prng_seed(16);
ret = misc_register(&prng_dev);
- if (ret) {
- printk(KERN_WARNING
- "Could not register misc device for PRNG.\n");
+ if (ret)
goto out_buf;
- }
return 0;
out_buf: