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WMI: properly cleanup devices to avoid crashes

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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>
This commit is contained in:
Dmitry Torokhov 2011-09-07 15:00:02 -07:00 committed by Matthew Garrett
parent 349d594be4
commit 023b956597
1 changed files with 5 additions and 1 deletions
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6
drivers/platform/x86/wmi.c
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@ -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)