#include <linux/bootmem.h>
#include <linux/splice.h>
#include <linux/pfn.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/io.h>
}
#endif
-#ifdef CONFIG_NONPROMISC_DEVMEM
+#ifdef CONFIG_STRICT_DEVMEM
static inline int range_is_allowed(unsigned long pfn, unsigned long size)
{
u64 from = ((u64)pfn) << PAGE_SHIFT;
static int memory_open(struct inode * inode, struct file * filp)
{
+ int ret = 0;
+
+ lock_kernel();
switch (iminor(inode)) {
case 1:
filp->f_op = &mem_fops;
break;
#endif
default:
+ unlock_kernel();
return -ENXIO;
}
if (filp->f_op && filp->f_op->open)
- return filp->f_op->open(inode,filp);
- return 0;
+ ret = filp->f_op->open(inode,filp);
+ unlock_kernel();
+ return ret;
}
static const struct file_operations memory_fops = {
mem_class = class_create(THIS_MODULE, "mem");
for (i = 0; i < ARRAY_SIZE(devlist); i++)
- device_create(mem_class, NULL,
- MKDEV(MEM_MAJOR, devlist[i].minor),
- devlist[i].name);
+ device_create_drvdata(mem_class, NULL,
+ MKDEV(MEM_MAJOR, devlist[i].minor),
+ NULL, devlist[i].name);
return 0;
}