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ACPI: Introduce acpi_set_device_status() 

Introduce a static inline function for setting the status field
of struct acpi_device on the basis of a supplied u32 number,
acpi_set_device_status(), and use it instead of the horrible
horrible STRUCT_TO_INT() macro wherever applicable.  Having done
that, drop STRUCT_TO_INT() (and pretend that it has never existed).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2013-11-22 21:56:06 +01:00
parent f4b734c35e
commit 25db115b0b
3 changed files with 10 additions and 11 deletions
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11
drivers/acpi/bus.c
View File

@ -52,9 +52,6 @@ struct acpi_device *acpi_root;
struct proc_dir_entry *acpi_root_dir;
EXPORT_SYMBOL(acpi_root_dir);
#define STRUCT_TO_INT(s) (*((int*)&s))
#ifdef CONFIG_X86
static int set_copy_dsdt(const struct dmi_system_id *id)
{
@ -115,18 +112,16 @@ int acpi_bus_get_status(struct acpi_device *device)
if (ACPI_FAILURE(status))
return -ENODEV;
STRUCT_TO_INT(device->status) = (int) sta;
acpi_set_device_status(device, sta);
if (device->status.functional && !device->status.present) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
"functional but not present;\n",
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
device->pnp.bus_id, (u32)sta));
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
device->pnp.bus_id, (u32)sta));
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_status);

5
drivers/acpi/scan.c
View File

@ -20,7 +20,6 @@
#define _COMPONENT ACPI_BUS_COMPONENT
ACPI_MODULE_NAME("scan");
#define STRUCT_TO_INT(s) (*((int*)&s))
extern struct acpi_device *acpi_root;
#define ACPI_BUS_CLASS "system_bus"
@ -1683,7 +1682,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
device->device_type = type;
device->handle = handle;
device->parent = acpi_bus_get_parent(handle);
STRUCT_TO_INT(device->status) = sta;
acpi_set_device_status(device, sta);
acpi_device_get_busid(device);
acpi_set_pnp_ids(handle, &device->pnp, type);
acpi_bus_get_flags(device);
@ -1927,7 +1926,7 @@ static acpi_status acpi_bus_device_attach(acpi_handle handle, u32 lvl_not_used,
if (acpi_bus_get_device(handle, &device))
return AE_CTRL_DEPTH;
STRUCT_TO_INT(device->status) = sta;
acpi_set_device_status(device, sta);
/* Skip devices that are not present. */
if (!acpi_device_is_present(device))
goto err;

5
include/acpi/acpi_bus.h
View File

@ -320,6 +320,11 @@ static inline void *acpi_driver_data(struct acpi_device *d)
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
{
*((u32 *)&adev->status) = sta;
}
/* acpi_device.dev.bus == &acpi_bus_type */
extern struct bus_type acpi_bus_type;