software node: Handle software node injection to an existing device properly
The function software_node_notify() - the function that creates and removes the symlinks between the node and the device - was called unconditionally in device_add_software_node() and device_remove_software_node(), but it needs to be called in those functions only in the special case where the node is added to a device that has already been registered. This fixes NULL pointer dereference that happens if device_remove_software_node() is used with device that was never registered. Fixes: b622b245 ("software node: Allow node addition to already existing device") Reported-and-tested-by:Dominik Brodowski <linux@dominikbrodowski.net> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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