ACPI: Change ACPI to use dev_archdata instead of firmware_data

Change ACPI to use dev_archdata instead of firmware_data

This patch changes ACPI to use the new dev_archdata on i386, x86_64
and ia64 (is there any other arch using ACPI ?) to store it's
acpi_handle.

It also removes the firmware_data field from struct device as this
was the only user.

Only build-tested on x86

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

6 files changed, 39 insertions, 15 deletions

diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 10f160dc75b1..a2f46d587d55 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -267,9 +267,9 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
 {
         acpi_status status;
 
-        if (dev->firmware_data) {
+        if (dev->archdata.acpi_handle) {
                 printk(KERN_WARNING PREFIX
-                       "Drivers changed 'firmware_data' for %s\n", dev->bus_id);
+                       "Drivers changed 'acpi_handle' for %s\n", dev->bus_id);
                 return -EINVAL;
         }
         get_device(dev);
@@ -278,25 +278,26 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
                 put_device(dev);
                 return -EINVAL;
         }
-        dev->firmware_data = handle;
+        dev->archdata.acpi_handle = handle;
 
         return 0;
 }
 
 static int acpi_unbind_one(struct device *dev)
 {
-        if (!dev->firmware_data)
+        if (!dev->archdata.acpi_handle)
                 return 0;
-        if (dev == acpi_get_physical_device(dev->firmware_data)) {
+        if (dev == acpi_get_physical_device(dev->archdata.acpi_handle)) {
                 /* acpi_get_physical_device increase refcnt by one */
                 put_device(dev);
-                acpi_detach_data(dev->firmware_data, acpi_glue_data_handler);
-                dev->firmware_data = NULL;
+                acpi_detach_data(dev->archdata.acpi_handle,
+                                 acpi_glue_data_handler);
+                dev->archdata.acpi_handle = NULL;
                 /* acpi_bind_one increase refcnt by one */
                 put_device(dev);
         } else {
                 printk(KERN_ERR PREFIX
-                       "Oops, 'firmware_data' corrupt for %s\n", dev->bus_id);
+                       "Oops, 'acpi_handle' corrupt for %s\n", dev->bus_id);
         }
         return 0;
 }
@@ -328,7 +329,8 @@ static int acpi_platform_notify(struct device *dev)
         if (!ret) {
                 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
-                acpi_get_name(dev->firmware_data, ACPI_FULL_PATHNAME, &buffer);
+                acpi_get_name(dev->archdata.acpi_handle,
+                              ACPI_FULL_PATHNAME, &buffer);
                 DBG("Device %s -> %s\n", dev->bus_id, (char *)buffer.pointer);
                 kfree(buffer.pointer);
         } else
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index f338e40bd544..fdd10953b2b6 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -357,7 +357,7 @@ struct device *acpi_get_physical_device(acpi_handle);
 /* helper */
 acpi_handle acpi_get_child(acpi_handle, acpi_integer);
 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
-#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->firmware_data))
+#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
 
 #endif /* CONFIG_ACPI */
 
diff --git a/include/asm-i386/device.h b/include/asm-i386/device.h
index d8f9872b0e2d..849604c70e6b 100644
--- a/include/asm-i386/device.h
+++ b/include/asm-i386/device.h
@@ -3,5 +3,13 @@
  *
  * This file is released under the GPLv2
  */
-#include <asm-generic/device.h>
+#ifndef _ASM_I386_DEVICE_H
+#define _ASM_I386_DEVICE_H
 
+struct dev_archdata {
+#ifdef CONFIG_ACPI
+        void    *acpi_handle;
+#endif
+};
+
+#endif /* _ASM_I386_DEVICE_H */
diff --git a/include/asm-ia64/device.h b/include/asm-ia64/device.h
index d8f9872b0e2d..3db6daf7f251 100644
--- a/include/asm-ia64/device.h
+++ b/include/asm-ia64/device.h
@@ -3,5 +3,13 @@
  *
  * This file is released under the GPLv2
  */
-#include <asm-generic/device.h>
+#ifndef _ASM_IA64_DEVICE_H
+#define _ASM_IA64_DEVICE_H
 
+struct dev_archdata {
+#ifdef CONFIG_ACPI
+        void    *acpi_handle;
+#endif
+};
+
+#endif /* _ASM_IA64_DEVICE_H */
diff --git a/include/asm-x86_64/device.h b/include/asm-x86_64/device.h
index d8f9872b0e2d..3afa03f33a36 100644
--- a/include/asm-x86_64/device.h
+++ b/include/asm-x86_64/device.h
@@ -3,5 +3,13 @@
  *
  * This file is released under the GPLv2
  */
-#include <asm-generic/device.h>
+#ifndef _ASM_X86_64_DEVICE_H
+#define _ASM_X86_64_DEVICE_H
 
+struct dev_archdata {
+#ifdef CONFIG_ACPI
+        void    *acpi_handle;
+#endif
+};
+
+#endif /* _ASM_X86_64_DEVICE_H */
diff --git a/include/linux/device.h b/include/linux/device.h
index 5b54d756cd54..2d9dc358c027 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -369,8 +369,6 @@ struct device {
         void            *driver_data;   /* data private to the driver */
         void            *platform_data; /* Platform specific data, device
                                            core doesn't touch it */
-        void            *firmware_data; /* Firmware specific data (e.g. ACPI,
-                                           BIOS data),reserved for device core*/
         struct dev_pm_info      power;
 
         u64             *dma_mask;      /* dma mask (if dma'able device) */