PHY model is being used on omap5 platforms even if port mode
is not OMAP_EHCI_PORT_MODE_PHY. So don't guess if PHY is required
or not based on PHY mode.
If PHY is provided in device tree, it must be required. So, if
devm_usb_get_phy_by_phandle() gives us an error code other
than -ENODEV (no PHY) then error out.
This fixes USB Ethernet on omap5-uevm if PHY happens to
probe after EHCI thus causing a -EPROBE_DEFER.
Cc: Alan Stern <st...@rowland.harvard.edu>
Cc: Johan Hovold <jo...@kernel.org>
Cc: Ladislav Michl <la...@linux-mips.org>
Cc: Peter Ujfalusi <peter.ujfal...@ti.com>
Cc: Tony Lindgren <t...@atomide.com>
Reported-by: Peter Ujfalusi <peter.ujfal...@ti.com>
Signed-off-by: Roger Quadros <rog...@ti.com>
---
drivers/usb/host/ehci-omap.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 7e4c1334..0eacbf4 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -159,9 +159,11 @@ static int ehci_hcd_omap_probe(struct platform_device
*pdev)
/* get the PHY device */
phy = devm_usb_get_phy_by_phandle(dev, "phys", i);
if (IS_ERR(phy)) {
- /* Don't bail out if PHY is not absolutely necessary */
- if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY)
+ ret = PTR_ERR(phy);
+ if (ret == -ENODEV) { /* no PHY */
+ phy = NULL;
continue;
+ }
ret = PTR_ERR(phy);
if (ret != -EPROBE_DEFER)
--
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