diff options
| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2018-09-05 13:40:02 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-10-02 09:37:01 +0200 |
| commit | e0f681c2c11a25b76626cea77deb819a4754375d (patch) | |
| tree | 17e7e145ac5ce7199b3d480c005dc43243256eab /drivers/usb/dwc2/platform.c | |
| parent | usb: dwc3: add EXTCON dependency for qcom (diff) | |
| download | linux-e0f681c2c11a25b76626cea77deb819a4754375d.tar.xz linux-e0f681c2c11a25b76626cea77deb819a4754375d.zip | |
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 <arturp@synopsys.com>
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2/platform.c')
| -rw-r--r-- | drivers/usb/dwc2/platform.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 577642895b57..c0b64d483552 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -432,6 +432,14 @@ static int dwc2_driver_probe(struct platform_device *dev) if (retval) return retval; + hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus"); + if (IS_ERR(hsotg->vbus_supply)) { + retval = PTR_ERR(hsotg->vbus_supply); + hsotg->vbus_supply = NULL; + if (retval != -ENODEV) + return retval; + } + retval = dwc2_lowlevel_hw_enable(hsotg); if (retval) return retval; |