From: Anisse Astier <anisse@astier.eu>
Date: Sat, 30 Jan 2010 23:00:17 +0000 (-0500)
Subject: wmi: Free the allocated acpi objects through wmi_get_event_data
X-Git-Tag: firefly_0821_release~11625^2~37
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9f835c304f14fe5ad4f435c58e9c1e08fda71886;p=firefly-linux-kernel-4.4.55.git

wmi: Free the allocated acpi objects through wmi_get_event_data

commit 3e9b988e4edf065d39c1343937f717319b1c1065 upstream

[ backported to 2.6.32 ]

These function allocate an acpi object by calling wmi_get_event_data, which
then calls acpi_evaluate_object, and it is not freed afterwards.

And kernel doc is fixed for parameters of wmi_get_event_data.

Signed-off-by: Anisse Astier <anisse@astier.eu>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 0f900cc9fa7a..f235a9835330 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -180,6 +180,7 @@ static void dell_wmi_notify(u32 value, void *context)
 			printk(KERN_INFO "dell-wmi: Unknown key %x pressed\n",
 			       buffer[1] & 0xFFFF);
 	}
+	kfree(obj);
 }
 
 static int __init dell_wmi_input_setup(void)
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index c2842171cec6..36109e19f349 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -377,6 +377,8 @@ static void hp_wmi_notify(u32 value, void *context)
 			       eventcode);
 	} else
 		printk(KERN_INFO "HP WMI: Unknown response received\n");
+
+	kfree(obj);
 }
 
 static int __init hp_wmi_input_setup(void)
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 177f8d767df4..87f4c97f2a77 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -510,8 +510,8 @@ EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
 /**
  * wmi_get_event_data - Get WMI data associated with an event
  *
- * @event - Event to find
- * &out - Buffer to hold event data
+ * @event: Event to find
+ * @out: Buffer to hold event data. out->pointer should be freed with kfree()
  *
  * Returns extra data associated with an event in WMI.
  */