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usb: dwc2: Add hibernation exiting flow by system resume 

Adds a new flow of exiting hibernation when PC is resumed
from suspend state.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124819.A3B26A005C@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-16 16:48:18 +04:00 committed by Greg Kroah-Hartman
parent 755d0effeb
commit ae0da4fd22
1 changed files with 10 additions and 0 deletions
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10
drivers/usb/dwc2/hcd.c
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@ -4470,6 +4470,16 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd)
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
break;
case DWC2_POWER_DOWN_PARAM_HIBERNATION:
ret = dwc2_exit_hibernation(hsotg, 0, 0, 1);
if (ret)
dev_err(hsotg->dev, "exit hibernation failed.\n");
/*
* Set HW accessible bit before powering on the controller
* since an interrupt may rise.
*/
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
break;
case DWC2_POWER_DOWN_PARAM_NONE:
/*
* If not hibernation nor partial power down are supported,