[PATCH] mem driver: fix conditional on isa i/o support

This change corrects the logic on the preprocessor conditionals that
include support for ISA port i/o (/dev/ioports) into the mem character
driver.

This fixes the following error when building for powerpc platforms with
CONFIG_PCI=n.

  drivers/built-in.o: undefined reference to `pci_io_base'

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Linas Vepstas <lins@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 4ac70ec697f0..6511012cbdcd 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -551,7 +551,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
         return virtr + wrote;
 }
 
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
 static ssize_t read_port(struct file * file, char __user * buf,
                          size_t count, loff_t *ppos)
 {
@@ -830,7 +830,7 @@ static const struct file_operations null_fops = {
         .splice_write   = splice_write_null,
 };
 
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
 static const struct file_operations port_fops = {
         .llseek         = memory_lseek,
         .read           = read_port,
@@ -908,7 +908,7 @@ static int memory_open(struct inode * inode, struct file * filp)
                 case 3:
                         filp->f_op = &null_fops;
                         break;
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
                 case 4:
                         filp->f_op = &port_fops;
                         break;
@@ -955,7 +955,7 @@ static const struct {
         {1, "mem",     S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
         {2, "kmem",    S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
         {3, "null",    S_IRUGO | S_IWUGO,           &null_fops},
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
         {4, "port",    S_IRUSR | S_IWUSR | S_IRGRP, &port_fops},
 #endif
         {5, "zero",    S_IRUGO | S_IWUGO,           &zero_fops},