From: Axel Lin <axel.lin@gmail.com>
Date: Mon, 28 Jun 2010 01:30:45 +0000 (+0800)
Subject: wmi: fix a memory leak in wmi_notify_debug
X-Git-Tag: v2.6.36-rc1~579^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1492616a434dae1908d0da2d6ee6605ca5a77e6f;p=pandora-kernel.git

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>
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