struct list_head res_list;
};
+static int acpi_hotmem_initialized;
+
static acpi_status
acpi_memory_get_resource(struct acpi_resource *resource, void *context)
{
if (!device)
return -EINVAL;
- mem_device = kmalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
+ mem_device = kzalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
if (!mem_device)
return -ENOMEM;
- memset(mem_device, 0, sizeof(struct acpi_memory_device));
INIT_LIST_HEAD(&mem_device->res_list);
mem_device->device = device;
/* Set the device state */
mem_device->state = MEMORY_POWER_ON_STATE;
- printk(KERN_INFO "%s \n", acpi_device_name(device));
+ printk(KERN_DEBUG "%s \n", acpi_device_name(device));
return result;
}
if (!device || !acpi_driver_data(device))
return -EINVAL;
- mem_device = (struct acpi_memory_device *)acpi_driver_data(device);
+ mem_device = acpi_driver_data(device);
kfree(mem_device);
return 0;
struct acpi_memory_device *mem_device;
int result = 0;
+ /*
+ * Early boot code has recognized memory area by EFI/E820.
+ * If DSDT shows these memory devices on boot, hotplug is not necessary
+ * for them. So, it just returns until completion of this driver's
+ * start up.
+ */
+ if (!acpi_hotmem_initialized)
+ return 0;
+
mem_device = acpi_driver_data(device);
if (!acpi_memory_check_device(mem_device)) {
return -ENODEV;
}
+ acpi_hotmem_initialized = 1;
return 0;
}