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usb: dwc2: Move enter hibernation to dwc2_port_suspend() function 

This move is done to call enter hibernation handler in
"dwc2_port_suspend()" function when core receives port suspend.
Otherwise it could be confusing to enter to hibernation in
"dwc2_hcd_hub_control()" function but other power saving modes
in "dwc2_port_suspend()" function.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124747.EE79EA005C@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-16 16:47:46 +04:00 committed by Greg Kroah-Hartman
parent 5160d6871a
commit 8f7f8689b6
1 changed files with 14 additions and 4 deletions
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18
drivers/usb/dwc2/hcd.c
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@ -3321,6 +3321,18 @@ int dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)
"enter partial_power_down failed.\n");
break;
case DWC2_POWER_DOWN_PARAM_HIBERNATION:
/*
* Perform spin unlock and lock because in
* "dwc2_host_enter_hibernation()" function there is a spinlock
* logic which prevents servicing of any IRQ during entering
* hibernation.
*/
spin_unlock_irqrestore(&hsotg->lock, flags);
ret = dwc2_enter_hibernation(hsotg, 1);
if (ret)
dev_err(hsotg->dev, "enter hibernation failed.\n");
spin_lock_irqsave(&hsotg->lock, flags);
break;
case DWC2_POWER_DOWN_PARAM_NONE:
/*
* If not hibernation nor partial power down are supported,
@ -3650,10 +3662,8 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
"SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
if (windex != hsotg->otg_port)
goto error;
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION)
dwc2_enter_hibernation(hsotg, 1);
else
dwc2_port_suspend(hsotg, windex);
if (!hsotg->bus_suspended)
retval = dwc2_port_suspend(hsotg, windex);
break;
case USB_PORT_FEAT_POWER: