Commit de4b9c41 authored Feb 08, 2015 by David Dueck Committed by Sasha Levin Apr 16, 2015

usb: phy: am335x-control: check return value of bus_find_device



[ Upstream commit d0f347d62814ec0f599a05c61c5619d5e999e4ae ]

This fixes a potential null pointer dereference.

Cc: <stable@vger.kernel.org> # v3.16+
Fixes: d4332013 ("driver core: dev_get_drvdata: Don't check for NULL dev")
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David Dueck <davidcdueck@googlemail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

parent 07088f9c

drivers/usb/phy/phy-am335x-control.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -126,6 +126,9 @@ struct phy_control am335x_get_phy_control(struct device dev)
		return NULL;

		dev = bus_find_device(&platform_bus_type, NULL, node, match);
		if (!dev)
		return NULL;

		ctrl_usb = dev_get_drvdata(dev);
		if (!ctrl_usb)
		return NULL;