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usb: common: Consider only available nodes for dr_mode 

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: 98bfb39466 ("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>
This commit is contained in:
Fabrizio Castro 2019-03-01 11:05:45 +00:00 committed by Greg Kroah-Hartman
parent 976daf9d11
commit 238e0268c8
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/common/common.c
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@ -145,6 +145,8 @@ enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0)
do {
controller = of_find_node_with_property(controller, "phys");
if (!of_device_is_available(controller))
continue;
index = 0;
do {
if (arg0 == -1) {