diff mbox series

[5.15,059/171] usb: dwc3: xilinx: Fix error handling when getting USB3 PHY

Message ID 20220131105232.020652201@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Jan. 31, 2022, 10:55 a.m. UTC 
From: Robert Hancock <robert.hancock@calian.com>

commit 2cc9b1c93b1c4caa2d971856c0780fb5f7d04692 upstream.

The code that looked up the USB3 PHY was ignoring all errors other than
EPROBE_DEFER in an attempt to handle the PHY not being present. Fix and
simplify the code by using devm_phy_optional_get and dev_err_probe so
that a missing PHY is not treated as an error and unexpected errors
are handled properly.

Fixes: 84770f028fab ("usb: dwc3: Add driver for Xilinx platforms")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220126000253.1586760-3-robert.hancock@calian.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/dwc3/dwc3-xilinx.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

--- a/drivers/usb/dwc3/dwc3-xilinx.c
+++ b/drivers/usb/dwc3/dwc3-xilinx.c
@@ -102,12 +102,12 @@  static int dwc3_xlnx_init_zynqmp(struct
 	int			ret;
 	u32			reg;
 
-	usb3_phy = devm_phy_get(dev, "usb3-phy");
-	if (PTR_ERR(usb3_phy) == -EPROBE_DEFER) {
-		ret = -EPROBE_DEFER;
+	usb3_phy = devm_phy_optional_get(dev, "usb3-phy");
+	if (IS_ERR(usb3_phy)) {
+		ret = PTR_ERR(usb3_phy);
+		dev_err_probe(dev, ret,
+			      "failed to get USB3 PHY\n");
 		goto err;
-	} else if (IS_ERR(usb3_phy)) {
-		usb3_phy = NULL;
 	}
 
 	/*