[POWERPC] silence a warning

[karo-tx-linux.git] / drivers / char / mem.c

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 66719f9d294c32457584ae00a08dea2a97e1cdf7..917b20402664aad5ccf970255f65f15974f06eab 100644 (file)
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -8,7 +8,6 @@
  *  Shared /dev/zero mmaping support, Feb 2000, Kanoj Sarcar <kanoj@sgi.com>
  */
 
-#include <linux/config.h>
 #include <linux/mm.h>
 #include <linux/miscdevice.h>
 #include <linux/slab.h>
@@ -20,13 +19,13 @@
 #include <linux/tty.h>
 #include <linux/capability.h>
 #include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/ptrace.h>
 #include <linux/device.h>
 #include <linux/highmem.h>
 #include <linux/crash_dump.h>
 #include <linux/backing-dev.h>
 #include <linux/bootmem.h>
+#include <linux/pipe_fs_i.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -96,7 +95,7 @@ static inline int valid_phys_addr_range(unsigned long addr, size_t count)
        return 1;
 }
 
-static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t size)
+static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
 {
        return 1;
 }
@@ -243,7 +242,7 @@ static int mmap_mem(struct file * file, struct vm_area_struct * vma)
 {
        size_t size = vma->vm_end - vma->vm_start;
 
-       if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, size))
+       if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size))
                return -EINVAL;
 
        vma->vm_page_prot = phys_mem_access_prot(file, vma->vm_pgoff,
@@ -578,6 +577,18 @@ static ssize_t write_null(struct file * file, const char __user * buf,
        return count;
 }
 
+static int pipe_to_null(struct pipe_inode_info *info, struct pipe_buffer *buf,
+                       struct splice_desc *sd)
+{
+       return sd->len;
+}
+
+static ssize_t splice_write_null(struct pipe_inode_info *pipe,struct file *out,
+                                loff_t *ppos, size_t len, unsigned int flags)
+{
+       return splice_from_pipe(pipe, out, ppos, len, flags, pipe_to_null);
+}
+
 #ifdef CONFIG_MMU
 /*
  * For fun, we are using the MMU for this.
@@ -765,7 +776,7 @@ static int open_port(struct inode * inode, struct file * filp)
 #define open_kmem      open_mem
 #define open_oldmem    open_mem
 
-static struct file_operations mem_fops = {
+static const struct file_operations mem_fops = {
        .llseek         = memory_lseek,
        .read           = read_mem,
        .write          = write_mem,
@@ -773,7 +784,7 @@ static struct file_operations mem_fops = {
        .open           = open_mem,
 };
 
-static struct file_operations kmem_fops = {
+static const struct file_operations kmem_fops = {
        .llseek         = memory_lseek,
        .read           = read_kmem,
        .write          = write_kmem,
@@ -781,14 +792,15 @@ static struct file_operations kmem_fops = {
        .open           = open_kmem,
 };
 
-static struct file_operations null_fops = {
+static const struct file_operations null_fops = {
        .llseek         = null_lseek,
        .read           = read_null,
        .write          = write_null,
+       .splice_write   = splice_write_null,
 };
 
 #if defined(CONFIG_ISA) || !defined(__mc68000__)
-static struct file_operations port_fops = {
+static const struct file_operations port_fops = {
        .llseek         = memory_lseek,
        .read           = read_port,
        .write          = write_port,
@@ -796,7 +808,7 @@ static struct file_operations port_fops = {
 };
 #endif
 
-static struct file_operations zero_fops = {
+static const struct file_operations zero_fops = {
        .llseek         = zero_lseek,
        .read           = read_zero,
        .write          = write_zero,
@@ -807,14 +819,14 @@ static struct backing_dev_info zero_bdi = {
        .capabilities   = BDI_CAP_MAP_COPY,
 };
 
-static struct file_operations full_fops = {
+static const struct file_operations full_fops = {
        .llseek         = full_lseek,
        .read           = read_full,
        .write          = write_full,
 };
 
 #ifdef CONFIG_CRASH_DUMP
-static struct file_operations oldmem_fops = {
+static const struct file_operations oldmem_fops = {
        .read   = read_oldmem,
        .open   = open_oldmem,
 };
@@ -841,7 +853,7 @@ static ssize_t kmsg_write(struct file * file, const char __user * buf,
        return ret;
 }
 
-static struct file_operations kmsg_fops = {
+static const struct file_operations kmsg_fops = {
        .write =        kmsg_write,
 };
 
@@ -891,7 +903,7 @@ static int memory_open(struct inode * inode, struct file * filp)
        return 0;
 }
 
-static struct file_operations memory_fops = {
+static const struct file_operations memory_fops = {
        .open           = memory_open,  /* just a selector for the real open */
 };
 
@@ -927,13 +939,10 @@ static int __init chr_dev_init(void)
                printk("unable to get major %d for memory devs\n", MEM_MAJOR);
 
        mem_class = class_create(THIS_MODULE, "mem");
-       for (i = 0; i < ARRAY_SIZE(devlist); i++) {
+       for (i = 0; i < ARRAY_SIZE(devlist); i++)
                class_device_create(mem_class, NULL,
                                        MKDEV(MEM_MAJOR, devlist[i].minor),
                                        NULL, devlist[i].name);
-               devfs_mk_cdev(MKDEV(MEM_MAJOR, devlist[i].minor),
-                               S_IFCHR | devlist[i].mode, devlist[i].name);
-       }
        
        return 0;
 }