4.9-stable review patch. If anyone has any objections, please let me know.
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From: Fabrizio Castro fabrizio.castro@bp.renesas.com
commit 238e0268c82789e4c107a37045d529a6dbce51a9 upstream.
There are cases where multiple device tree nodes point to the same phy node by means of the "phys" property, but we should only consider those nodes that are marked as available rather than just any node.
Fixes: 98bfb3946695 ("usb: of: add an api to get dr_mode by the phy node") Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Fabrizio Castro fabrizio.castro@bp.renesas.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/common/common.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -148,6 +148,8 @@ enum usb_dr_mode of_usb_get_dr_mode_by_p
do { controller = of_find_node_with_property(controller, "phys"); + if (!of_device_is_available(controller)) + continue; index = 0; do { if (arg0 == -1) {