From: Robert Hancock robert.hancock@calian.com
commit b470947c3672f7eb7c4c271d510383d896831cc2 upstream.
A previous patch to skip part of the initialization when a USB3 PHY was not present could result in the return value being uninitialized in that case, causing spurious probe failures. Initialize ret to 0 to avoid this.
Fixes: 9678f3361afc ("usb: dwc3: xilinx: Skip resets and USB3 register settings for USB2.0 mode") Cc: stable@vger.kernel.org Reviewed-by: Nathan Chancellor nathan@kernel.org Signed-off-by: Robert Hancock robert.hancock@calian.com Link: https://lore.kernel.org/r/20220127221500.177021-1-robert.hancock@calian.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc3/dwc3-xilinx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/dwc3/dwc3-xilinx.c +++ b/drivers/usb/dwc3/dwc3-xilinx.c @@ -99,7 +99,7 @@ static int dwc3_xlnx_init_zynqmp(struct struct device *dev = priv_data->dev; struct reset_control *crst, *hibrst, *apbrst; struct phy *usb3_phy; - int ret; + int ret = 0; u32 reg;
usb3_phy = devm_phy_optional_get(dev, "usb3-phy");