[PATCH] usb: phy: generic: make vcc regulator optional

From: Sascha Hauer
Date: Wed Oct 12 2022 - 09:28:12 EST


phy-generic uses the existance of the property "vcc-supply" to see if a
regulator is optional or not. Use devm_regulator_get_optional() instead
which exists for this purpose. Using devm_regulator_get_optional()
avoids "supply vcc not found, using dummy regulator" messages.

Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
drivers/usb/phy/phy-generic.c | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index 34b9f81401871..92d3e067067c6 100644
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -209,7 +209,7 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop)
int err = 0;

u32 clk_rate = 0;
- bool needs_vcc = false, needs_clk = false;
+ bool needs_clk = false;

if (dev->of_node) {
struct device_node *node = dev->of_node;
@@ -217,7 +217,6 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop)
if (of_property_read_u32(node, "clock-frequency", &clk_rate))
clk_rate = 0;

- needs_vcc = of_property_read_bool(node, "vcc-supply");
needs_clk = of_property_read_bool(node, "clocks");
}
nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
@@ -260,13 +259,10 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop)
}
}

- nop->vcc = devm_regulator_get(dev, "vcc");
- if (IS_ERR(nop->vcc)) {
- dev_dbg(dev, "Error getting vcc regulator: %ld\n",
- PTR_ERR(nop->vcc));
- if (needs_vcc)
- return -EPROBE_DEFER;
- }
+ nop->vcc = devm_regulator_get_optional(dev, "vcc");
+ if (IS_ERR(nop->vcc) && PTR_ERR(nop->vcc) != -ENODEV)
+ return dev_err_probe(dev, PTR_ERR(nop->vcc),
+ "could not get vcc regulator\n");

nop->vbus_draw = devm_regulator_get_exclusive(dev, "vbus");
if (PTR_ERR(nop->vbus_draw) == -ENODEV)
--
2.30.2