Commit cbb22ebc authored May 19, 2017 by Michael Thalmeier Committed by Peter Chen May 23, 2017

usb: chipidea: core: check before accessing ci_role in ci_role_show



ci_role BUGs when the role is >= CI_ROLE_END.
This is the case while the role is changing.

Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at>
Signed-off-by: Peter Chen <peter.chen@nxp.com>

parent 0340ff83

drivers/usb/chipidea/core.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -843,7 +843,10 @@ static ssize_t ci_role_show(struct device dev, struct device_attribute attr,
		{
		struct ci_hdrc *ci = dev_get_drvdata(dev);

		if (ci->role != CI_ROLE_END)
		return sprintf(buf, "%s\n", ci_role(ci)->name);

		return 0;
		}

		static ssize_t ci_role_store(struct device *dev,