*/
#include <linux/module.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/miscdevice.h>
#define JSF_PART_BITS 2 /* 2 bits of minors to cover JSF_NPART */
#define JSF_PART_MASK 0x3 /* 2 bits mask */
+static DEFINE_MUTEX(jsf_mutex);
+
/*
* Access functions.
* We could ioremap(), but it's easier this way.
{
loff_t ret;
- lock_kernel();
+ mutex_lock(&jsf_mutex);
switch (orig) {
case 0:
file->f_pos = offset;
default:
ret = -EINVAL;
}
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return ret;
}
static long jsf_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
{
- lock_kernel();
+ mutex_lock(&jsf_mutex);
int error = -ENOTTY;
void __user *argp = (void __user *)arg;
if (!capable(CAP_SYS_ADMIN)) {
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return -EPERM;
}
switch (cmd) {
case JSFLASH_IDENT:
if (copy_to_user(argp, &jsf0.id, JSFIDSZ)) {
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return -EFAULT;
}
break;
break;
}
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return error;
}
static int jsf_open(struct inode * inode, struct file * filp)
{
- lock_kernel();
+ mutex_lock(&jsf_mutex);
if (jsf0.base == 0) {
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return -ENXIO;
}
if (test_and_set_bit(0, (void *)&jsf0.busy) != 0) {
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return -EBUSY;
}
- unlock_kernel();
+ mutex_unlock(&jsf_mutex);
return 0; /* XXX What security? */
}
{
int rc;
struct jsflash *jsf;
- int node;
+ phandle node;
char banner[128];
struct linux_prom_registers reg0;