[PATCH] Char: sx, use eisa probing

[powerpc.git] / drivers / char / mem.c

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 6511012..089020e 100644 (file)
--- 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
@@ -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;
 }
 
@@ -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;
 }