phy: phy-snps-eusb2: make reset control optional

Not all SoCs expose the reset line controls to the kernel, so make them
optional.

Signed-off-by: Ivaylo Ivanov <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: ivoszbg

drivers/phy/phy-snps-eusb2.c

@@ -408,7 +408,7 @@ static int snps_eusb2_hsphy_probe(struct platform_device *pdev)
 	if (IS_ERR(phy->base))
 		return PTR_ERR(phy->base);
 
-	phy->phy_reset = devm_reset_control_get_exclusive(dev, NULL);
+	phy->phy_reset = devm_reset_control_get_optional_exclusive(dev, NULL);
 	if (IS_ERR(phy->phy_reset))
 		return PTR_ERR(phy->phy_reset);