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Commit f25bc4cd authored by Jack Pham's avatar Jack Pham
Browse files

misc: liquid_dock: Check for NULL notifier parameter 



Check nb parameter of register_liquid_dock_notify() in
order to avoid a potential NULL pointer reference if passed
to blocking_notifier_chain_register().

Change-Id: I8d2971d32a1562559e7b27b021efd688beec5494
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
parent d0e5ef3a

drivers/misc/qcom_liquid_dock.c

+4 −1
Original line number Original line Diff line number Diff line
@@ -37,8 +37,11 @@ static BLOCKING_NOTIFIER_HEAD(dock_notifier_list); 
 */

 */

void register_liquid_dock_notify(struct notifier_block *nb)

void register_liquid_dock_notify(struct notifier_block *nb)

{

{

	if (!nb)

		return;



	/* inform new client of current state */

	/* inform new client of current state */

	if (nb && nb->notifier_call)

	if (nb->notifier_call)

		nb->notifier_call(nb, docked, NULL);

		nb->notifier_call(nb, docked, NULL);





	blocking_notifier_chain_register(&dock_notifier_list, nb);

	blocking_notifier_chain_register(&dock_notifier_list, nb);