Commit b6573da1 authored Mar 10, 2017 by Benjamin Tissoires Committed by Dmitry Torokhov Mar 10, 2017

Input: synaptics-rmi4 - prevent null pointer dereference in f30

If the platform data has f30_data.disable set, f30 in rmi_f30_config()
might be null. Prevent a kernel oops by checking for non-null f30.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

parent 45838660

drivers/input/rmi4/rmi_f30.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -170,6 +170,10 @@ static int rmi_f30_config(struct rmi_function *fn)
		rmi_get_platform_data(fn->rmi_dev);
		int error;

		/* can happen if f30_data.disable is set */
		if (!f30)
		return 0;

		if (pdata->f30_data.trackstick_buttons) {
		/* Try [re-]establish link to F03. */
		f30->f03 = rmi_find_function(fn->rmi_dev, 0x03);