diff options
| author | Felipe Balbi <balbi@ti.com> | 2013-03-15 12:52:08 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-03-18 13:18:28 +0400 |
| commit | d105e7f86f890a530cdefc2a715121345de30dc2 (patch) | |
| tree | 9ba1568aec725cac6674fa8e280fbcfa54f02853 /drivers/usb/dwc3 | |
| parent | 817e5f33d0c12f24bdfebe88c96ca2e968756da4 (diff) | |
| download | linux-d105e7f86f890a530cdefc2a715121345de30dc2.tar.xz | |
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 <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 24 |
1 files 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; } |