X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fchar%2Fmem.c;h=089020e0ee5aa83ce48ff8b15470724a45eafdc4;hb=18f813ee693eaf51ad313020b725b118a891c3ee;hp=4ac70ec697f07f7b6b15c52d231709b7dd64577b;hpb=aebb1153ac54ddbbd3d3f0481a193f4bf0ead53b;p=powerpc.git

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 4ac70ec697..089020e0ee 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -26,6 +26,7 @@
 #include <linux/backing-dev.h>
 #include <linux/bootmem.h>
 #include <linux/pipe_fs_i.h>
+#include <linux/pfn.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -292,8 +293,8 @@ static int mmap_kmem(struct file * file, struct vm_area_struct * vma)
 {
 	unsigned long pfn;
 
-	/* Turn a kernel-virtual address into a physical page frame */
-	pfn = __pa((u64)vma->vm_pgoff << PAGE_SHIFT) >> PAGE_SHIFT;
+	/* Turn a pfn offset into an absolute pfn */
+	pfn = PFN_DOWN(virt_to_phys((void *)PAGE_OFFSET)) + vma->vm_pgoff;
 
 	/*
 	 * RED-PEN: on some architectures there is more mapped memory
@@ -551,7 +552,7 @@ 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)
 {
@@ -773,7 +774,7 @@ static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
 {
 	loff_t ret;
 
-	mutex_lock(&file->f_dentry->d_inode->i_mutex);
+	mutex_lock(&file->f_path.dentry->d_inode->i_mutex);
 	switch (orig) {
 		case 0:
 			file->f_pos = offset;
@@ -788,7 +789,7 @@ static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
 		default:
 			ret = -EINVAL;
 	}
-	mutex_unlock(&file->f_dentry->d_inode->i_mutex);
+	mutex_unlock(&file->f_path.dentry->d_inode->i_mutex);
 	return ret;
 }
 
@@ -830,7 +831,7 @@ 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 +909,7 @@ 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 +956,7 @@ 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},
@@ -979,10 +980,10 @@ static int __init chr_dev_init(void)
 
 	mem_class = class_create(THIS_MODULE, "mem");
 	for (i = 0; i < ARRAY_SIZE(devlist); i++)
-		class_device_create(mem_class, NULL,
-					MKDEV(MEM_MAJOR, devlist[i].minor),
-					NULL, devlist[i].name);
-	
+		device_create(mem_class, NULL,
+			      MKDEV(MEM_MAJOR, devlist[i].minor),
+			      devlist[i].name);
+
 	return 0;
 }