acpi_device_add() allocates and adds an element to acpi_bus_id_list
(or increments the instance count if the device's HID is already
present in the list), but the element is never deleted from the list
nor freed. Fix it.
Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx>
---
drivers/acpi/scan.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 78d5f02..a0e942b 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -471,10 +471,24 @@ static void acpi_device_release(struct device *dev)
static void acpi_device_del(struct acpi_device *device)
{
+ struct acpi_device_bus_id *acpi_device_bus_id;
+
mutex_lock(&acpi_device_lock);
if (device->parent)
list_del(&device->node);
+ list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node)
+ if (!strcmp(acpi_device_bus_id->bus_id,
+ acpi_device_hid(device))) {
+ if (acpi_device_bus_id->instance_no > 0)
+ acpi_device_bus_id->instance_no--;
+ else {
+ list_del(&acpi_device_bus_id->node);
+ kfree(acpi_device_bus_id);
+ }
+ break;
+ }
+
list_del(&device->wakeup_list);
mutex_unlock(&acpi_device_lock);
--
1.8.5.2 (Apple Git-48)
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