wmi: fix a memory leak in wmi_notify_debug
authorAxel Lin <axel.lin@gmail.com>
Mon, 28 Jun 2010 01:30:45 +0000 (09:30 +0800)
committerMatthew Garrett <mjg@redhat.com>
Tue, 3 Aug 2010 13:48:51 +0000 (09:48 -0400)
commit1492616a434dae1908d0da2d6ee6605ca5a77e6f
tree4bab4bca46acbf15e242e6663b313e05f1d1be06
parentd5164dbf1f651d1e955b158fb70a9c844cc91cd1
wmi: fix a memory leak in wmi_notify_debug

When acpi_evaluate_object() is passed ACPI_ALLOCATE_BUFFER,
the caller must kfree the returned buffer if AE_OK is returned.

The callers of wmi_get_event_data() pass ACPI_ALLOCATE_BUFFER,
and thus must check its return value before accessing
or kfree() on the buffer.

This patch adds return value checking for wmi_get_event_data()
and adds a missing kfree(obj) in the end of wmi_notify_debug

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
drivers/platform/x86/wmi.c