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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-21 00:21:50 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-21 00:21:50 +0100
commit95f8a082b9b1ead0c2859f2a7b1ac91ff63d8765 (patch)
treeb269991cc59baa25b277a873ba264bca8716f129 /drivers/acpi/glue.c
parentf3fd0c8a7fc1e4f3107a09a75e622781d3007b56 (diff)
downloadlinux-95f8a082b9b1ead0c2859f2a7b1ac91ff63d8765.tar.bz2
ACPI / driver core: Introduce struct acpi_dev_node and related macros
To avoid adding an ACPI handle pointer to struct device on architectures that don't use ACPI, or generally when CONFIG_ACPI is not set, in which cases that pointer is useless, define struct acpi_dev_node that will contain the handle pointer if CONFIG_ACPI is set and will be empty otherwise and use it to represent the ACPI device node field in struct device. In addition to that define macros for reading and setting the ACPI handle of a device that don't generate code when CONFIG_ACPI is unset. Modify the ACPI subsystem to use those macros instead of referring to the given device's ACPI handle directly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/acpi/glue.c')
-rw-r--r--drivers/acpi/glue.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 3e75d6e5a469..01551840d236 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -134,12 +134,12 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
char physical_node_name[sizeof(PHYSICAL_NODE_STRING) + 2];
int retval = -EINVAL;
- if (dev->acpi_handle) {
+ if (ACPI_HANDLE(dev)) {
if (handle) {
dev_warn(dev, "ACPI handle is already set\n");
return -EINVAL;
} else {
- handle = dev->acpi_handle;
+ handle = ACPI_HANDLE(dev);
}
}
if (!handle)
@@ -181,8 +181,8 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
mutex_unlock(&acpi_dev->physical_node_lock);
- if (!dev->acpi_handle)
- dev->acpi_handle = handle;
+ if (!ACPI_HANDLE(dev))
+ ACPI_HANDLE_SET(dev, acpi_dev->handle);
if (!physical_node->node_id)
strcpy(physical_node_name, PHYSICAL_NODE_STRING);
@@ -200,7 +200,7 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
return 0;
err:
- dev->acpi_handle = NULL;
+ ACPI_HANDLE_SET(dev, NULL);
put_device(dev);
return retval;
@@ -217,10 +217,10 @@ static int acpi_unbind_one(struct device *dev)
acpi_status status;
struct list_head *node, *next;
- if (!dev->acpi_handle)
+ if (!ACPI_HANDLE(dev))
return 0;
- status = acpi_bus_get_device(dev->acpi_handle, &acpi_dev);
+ status = acpi_bus_get_device(ACPI_HANDLE(dev), &acpi_dev);
if (ACPI_FAILURE(status))
goto err;
@@ -246,7 +246,7 @@ static int acpi_unbind_one(struct device *dev)
sysfs_remove_link(&acpi_dev->dev.kobj, physical_node_name);
sysfs_remove_link(&dev->kobj, "firmware_node");
- dev->acpi_handle = NULL;
+ ACPI_HANDLE_SET(dev, NULL);
/* acpi_bind_one increase refcnt by one */
put_device(dev);
kfree(entry);