commit
87de6594dc45dbf6819f3e0ef92f9331c5a9444c upstream.
Skip wakeup_source_sysfs_remove() to fix a NULL pinter dereference via
ws->dev, if the wakeup source is unregistered before registering the
wakeup class from device_add().
Fixes:
2ca3d1ecb8c4 ("PM / wakeup: Register wakeup class kobj after device is added")
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
[ rjw: Subject & changelog, white space ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
{
if (ws) {
wakeup_source_remove(ws);
- wakeup_source_sysfs_remove(ws);
+ if (ws->dev)
+ wakeup_source_sysfs_remove(ws);
+
wakeup_source_destroy(ws);
}
}