Merge branch 'acpi-assorted'
* acpi-assorted:
ACPI / scan: Do not use dummy HID for system bus ACPI nodes
ACPI / power: Remove useless message from device registering routine
ACPI / glue: Update DBG macro to include KERN_DEBUG
ACPI / PM: Do not apply ACPI_SUCCESS() to acpi_bus_get_device() result
ACPI / memhotplug: remove redundant logic of acpi memory hotadd
ACPI / APEI: Fix the returned value in erst_dbg_read
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index eb30e5a..b679bf8 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -226,16 +226,6 @@
struct acpi_memory_info *info;
int node;
-
- /* Get the range from the _CRS */
- result = acpi_memory_get_device_resources(mem_device);
- if (result) {
- dev_err(&mem_device->device->dev,
- "get_device_resources failed\n");
- mem_device->state = MEMORY_INVALID_STATE;
- return result;
- }
-
node = acpi_get_node(mem_device->device->handle);
/*
* Tell the VM there is more memory here...
@@ -342,14 +332,6 @@
break;
}
- if (acpi_memory_check_device(mem_device))
- break;
-
- if (acpi_memory_enable_device(mem_device)) {
- acpi_handle_err(handle,"Cannot enable memory device\n");
- break;
- }
-
ost_code = ACPI_OST_SC_SUCCESS;
break;
diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c
index 903549d..04ab5c9 100644
--- a/drivers/acpi/apei/erst-dbg.c
+++ b/drivers/acpi/apei/erst-dbg.c
@@ -111,8 +111,17 @@
if (rc)
goto out;
/* no more record */
- if (id == APEI_ERST_INVALID_RECORD_ID)
+ if (id == APEI_ERST_INVALID_RECORD_ID) {
+ /*
+ * If the persistent store is empty initially, the function
+ * 'erst_read' below will return "-ENOENT" value. This causes
+ * 'retry_next' label is entered again. The returned value
+ * should be zero indicating the read operation is EOF.
+ */
+ len = 0;
+
goto out;
+ }
retry:
rc = len = erst_read(id, erst_dbg_buf, erst_dbg_buf_len);
/* The record may be cleared by others, try read next record */
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index f09dc98..c6ff606 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -358,8 +358,7 @@
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
struct acpi_device *adev;
- return handle && ACPI_SUCCESS(acpi_bus_get_device(handle, &adev)) ?
- adev : NULL;
+ return handle && !acpi_bus_get_device(handle, &adev) ? adev : NULL;
}
/**
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 0155184..95af6f6 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -18,9 +18,14 @@
#define ACPI_GLUE_DEBUG 0
#if ACPI_GLUE_DEBUG
-#define DBG(x...) printk(PREFIX x)
+#define DBG(fmt, ...) \
+ printk(KERN_DEBUG PREFIX fmt, ##__VA_ARGS__)
#else
-#define DBG(x...) do { } while(0)
+#define DBG(fmt, ...) \
+do { \
+ if (0) \
+ printk(KERN_DEBUG PREFIX fmt, ##__VA_ARGS__); \
+} while (0)
#endif
static LIST_HEAD(bus_type_list);
static DECLARE_RWSEM(bus_type_sem);
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 7db61b8..6e7b9d5 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -445,11 +445,8 @@
return -ENODEV;
ret = acpi_bus_get_device(handle, &acpi_dev);
- if (ret)
- goto no_power_resource;
-
- if (!acpi_dev->power.flags.power_resources)
- goto no_power_resource;
+ if (ret || !acpi_dev->power.flags.power_resources)
+ return -ENODEV;
powered_device = kzalloc(sizeof(*powered_device), GFP_KERNEL);
if (!powered_device)
@@ -471,10 +468,6 @@
}
return ret;
-
-no_power_resource:
- printk(KERN_DEBUG PREFIX "Invalid Power Resource to register!\n");
- return -ENODEV;
}
EXPORT_SYMBOL_GPL(acpi_power_resource_register_device);
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 53502d1..c88be6c 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1346,7 +1346,7 @@
acpi_add_id(device, ACPI_DOCK_HID);
else if (!acpi_ibm_smbus_match(device))
acpi_add_id(device, ACPI_SMBUS_IBM_HID);
- else if (!acpi_device_hid(device) &&
+ else if (list_empty(&device->pnp.ids) &&
ACPI_IS_ROOT_DEVICE(device->parent)) {
acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);