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authorDmitry Torokhov2011-09-07 15:00:02 -0700
committerMatthew Garrett2011-10-24 16:52:40 +0200
commit023b9565972a4a5e0f01b9aa32680af6e9b5c388 (patch)
tree1d3260147d92bd3feddf077564cbc0029f758e51 /drivers/platform/x86/wmi.c
parent349d594be45bdc7a86a08385f2f4f49d08ab68dd (diff)
WMI: properly cleanup devices to avoid crashes
We need to remove devices that we destroy from the list, otherwise we'll crash if there are more than one "_WDG" methods in DSDT. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=32052 Tested-by: Ilya Tumaykin <librarian_rus@yahoo.com> Cc: stable@kernel.org Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Acked-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform/x86/wmi.c')
-rw-r--r--drivers/platform/x86/wmi.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index f23d5a84e7b1..9b88be42b6cd 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -754,9 +754,13 @@ static void wmi_free_devices(void)
struct wmi_block *wblock, *next;
/* Delete devices for all the GUIDs */
- list_for_each_entry_safe(wblock, next, &wmi_block_list, list)
+ list_for_each_entry_safe(wblock, next, &wmi_block_list, list) {
+ list_del(&wblock->list);
if (wblock->dev.class)
device_unregister(&wblock->dev);
+ else
+ kfree(wblock);
+ }
}
static bool guid_already_parsed(const char *guid_string)