From d105e7f86f890a530cdefc2a715121345de30dc2 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 15 Mar 2013 10:52:08 +0200 Subject: [PATCH] usb: dwc3: fix PHY error handling PHY layer no longer returns NULL. It will return -ENXIO when PHY layer isn't enabled and we can use that to bail out instead of request a probe deferral. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index c845e7087069..e2325adf9c14 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -434,12 +434,32 @@ static int dwc3_probe(struct platform_device *pdev) dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); } - if (IS_ERR_OR_NULL(dwc->usb2_phy)) { + if (IS_ERR(dwc->usb2_phy)) { + ret = PTR_ERR(dwc->usb2_phy); + + /* + * if -ENXIO is returned, it means PHY layer wasn't + * enabled, so it makes no sense to return -EPROBE_DEFER + * in that case, since no PHY driver will ever probe. + */ + if (ret == -ENXIO) + return ret; + dev_err(dev, "no usb2 phy configured\n"); return -EPROBE_DEFER; } - if (IS_ERR_OR_NULL(dwc->usb3_phy)) { + if (IS_ERR(dwc->usb3_phy)) { + ret = PTR_ERR(dwc->usb2_phy); + + /* + * if -ENXIO is returned, it means PHY layer wasn't + * enabled, so it makes no sense to return -EPROBE_DEFER + * in that case, since no PHY driver will ever probe. + */ + if (ret == -ENXIO) + return ret; + dev_err(dev, "no usb3 phy configured\n"); return -EPROBE_DEFER; } -- 2.39.5