X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Facpi%2Facpi_memhotplug.c;h=cd946ed192d3e38a1539fcd58abfcfaf06258c26;hb=72836708c6218d91db982ae48c5c62293e78ed7c;hp=13687835c460bd602f8dfceea8c0c4a36e549bc9;hpb=50dd096973f1d95aa03c6a6d9e148d706b62b68e;p=pandora-kernel.git

diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 13687835c460..cd946ed192d3 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -85,6 +85,8 @@ struct acpi_memory_device {
 	struct list_head res_list;
 };
 
+static int acpi_hotmem_initialized;
+
 static acpi_status
 acpi_memory_get_resource(struct acpi_resource *resource, void *context)
 {
@@ -393,10 +395,9 @@ static int acpi_memory_device_add(struct acpi_device *device)
 	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;
@@ -414,7 +415,7 @@ static int acpi_memory_device_add(struct acpi_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;
 }
@@ -438,6 +439,15 @@ static int acpi_memory_device_start (struct acpi_device *device)
 	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)) {
@@ -537,6 +547,7 @@ static int __init acpi_memory_device_init(void)
 		return -ENODEV;
 	}
 
+	acpi_hotmem_initialized = 1;
 	return 0;
 }