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path: root/drivers/acpi/scan.c
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Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r--drivers/acpi/scan.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 80b668c80073..1db063b02f63 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -486,6 +486,7 @@ static void acpi_device_del(struct acpi_device *device)
acpi_device_bus_id->instance_no--;
else {
list_del(&acpi_device_bus_id->node);
+ kfree_const(acpi_device_bus_id->bus_id);
kfree(acpi_device_bus_id);
}
break;
@@ -585,6 +586,8 @@ static int acpi_get_device_data(acpi_handle handle, struct acpi_device **device,
if (!device)
return -EINVAL;
+ *device = NULL;
+
status = acpi_get_data_full(handle, acpi_scan_drop_device,
(void **)device, callback);
if (ACPI_FAILURE(status) || !*device) {
@@ -674,7 +677,14 @@ int acpi_device_add(struct acpi_device *device,
}
if (!found) {
acpi_device_bus_id = new_bus_id;
- strcpy(acpi_device_bus_id->bus_id, acpi_device_hid(device));
+ acpi_device_bus_id->bus_id =
+ kstrdup_const(acpi_device_hid(device), GFP_KERNEL);
+ if (!acpi_device_bus_id->bus_id) {
+ pr_err(PREFIX "Memory allocation error for bus id\n");
+ result = -ENOMEM;
+ goto err_free_new_bus_id;
+ }
+
acpi_device_bus_id->instance_no = 0;
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
@@ -709,6 +719,11 @@ int acpi_device_add(struct acpi_device *device,
if (device->parent)
list_del(&device->node);
list_del(&device->wakeup_list);
+
+ err_free_new_bus_id:
+ if (!found)
+ kfree(new_bus_id);
+
mutex_unlock(&acpi_device_lock);
err_detach: