#include <linux/io.h>
#include <linux/aio.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#ifdef CONFIG_IA64
# include <linux/efi.h>
return 0;
}
-#ifdef CONFIG_DEVKMEM
static int mmap_kmem(struct file *file, struct vm_area_struct *vma)
{
unsigned long pfn;
vma->vm_pgoff = pfn;
return mmap_mem(file, vma);
}
-#endif
-#ifdef CONFIG_DEVKMEM
/*
* This function reads the *virtual* memory as seen by the kernel.
*/
*ppos = p;
return virtr + wrote ? : err;
}
-#endif
-#ifdef CONFIG_DEVPORT
static ssize_t read_port(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
return -EFAULT;
while (count-- > 0 && i < 65536) {
char c;
+
if (__get_user(c, tmp)) {
if (tmp > buf)
break;
*ppos = i;
return tmp-buf;
}
-#endif
static ssize_t read_null(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
while (iov_iter_count(iter)) {
size_t chunk = iov_iter_count(iter), n;
+
if (chunk > PAGE_SIZE)
chunk = PAGE_SIZE; /* Just for latency reasons */
n = iov_iter_zero(chunk, iter);
#define open_mem open_port
#define open_kmem open_mem
-static const struct file_operations mem_fops = {
+static const struct file_operations __maybe_unused mem_fops = {
.llseek = memory_lseek,
.read = read_mem,
.write = write_mem,
#endif
};
-#ifdef CONFIG_DEVKMEM
-static const struct file_operations kmem_fops = {
+static const struct file_operations __maybe_unused kmem_fops = {
.llseek = memory_lseek,
.read = read_kmem,
.write = write_kmem,
.mmap_capabilities = memory_mmap_capabilities,
#endif
};
-#endif
static const struct file_operations null_fops = {
.llseek = null_lseek,
.splice_write = splice_write_null,
};
-#ifdef CONFIG_DEVPORT
-static const struct file_operations port_fops = {
+static const struct file_operations __maybe_unused port_fops = {
.llseek = memory_lseek,
.read = read_port,
.write = write_port,
.open = open_port,
};
-#endif
static const struct file_operations zero_fops = {
.llseek = zero_lseek,
const struct file_operations *fops;
fmode_t fmode;
} devlist[] = {
+#ifdef CONFIG_DEVMEM
[1] = { "mem", 0, &mem_fops, FMODE_UNSIGNED_OFFSET },
+#endif
#ifdef CONFIG_DEVKMEM
[2] = { "kmem", 0, &kmem_fops, FMODE_UNSIGNED_OFFSET },
#endif