This patch adds support to return -EPROBE_DEFER if devm_phy_get reports
it. If devm_phy_get returns -EPROBE_DEFER it could be that there is some
usb phy but it's not probed before. Other return values should indicate
a looking for an "old style USB PHY".

Cc: John Youn <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Stephen Warren <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
 drivers/usb/dwc2/platform.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index 9093530..69258d0 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -228,6 +228,9 @@ static int dwc2_driver_probe(struct platform_device *dev)
         */
        phy = devm_phy_get(&dev->dev, "usb2-phy");
        if (IS_ERR(phy)) {
+               if (PTR_ERR(phy) == -EPROBE_DEFER)
+                       return -EPROBE_DEFER;
+
                hsotg->phy = NULL;
                uphy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
                if (IS_ERR(uphy))
-- 
2.6.1

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