From e0f681c2c11a25b76626cea77deb819a4754375d Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Wed, 5 Sep 2018 13:40:02 +0200 Subject: usb: dwc2: get optional vbus-supply regulator once Move devm_regulator_get_optional() call to probe routine. This avoids 'vbus-supply' regulator to be requested lots of times, upon each call to dwc2_vbus_supply_init(), e.g. like with runtime pm. Fixes: 531ef5ebea96 ("usb: dwc2: add support for host mode external vbus supply") Tested-by: Artur Petrosyan Acked-by: Minas Harutyunyan Signed-off-by: Fabrice Gasnier Signed-off-by: Amelie Delaunay Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'drivers/usb/dwc2/hcd.c') diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 5f23b933cafc..24aa5a3acf86 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -358,16 +358,10 @@ static void dwc2_gusbcfg_init(struct dwc2_hsotg *hsotg) static int dwc2_vbus_supply_init(struct dwc2_hsotg *hsotg) { - int ret; - - hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus"); - if (IS_ERR(hsotg->vbus_supply)) { - ret = PTR_ERR(hsotg->vbus_supply); - hsotg->vbus_supply = NULL; - return ret == -ENODEV ? 0 : ret; - } + if (hsotg->vbus_supply) + return regulator_enable(hsotg->vbus_supply); - return regulator_enable(hsotg->vbus_supply); + return 0; } static int dwc2_vbus_supply_exit(struct dwc2_hsotg *hsotg) -- cgit v1.2.3