From ae0da4fd225804a2c5c60a03b16fcf7d930d8581 Mon Sep 17 00:00:00 2001 From: Artur Petrosyan Date: Fri, 16 Apr 2021 16:48:18 +0400 Subject: 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 Signed-off-by: Artur Petrosyan Link: https://lore.kernel.org/r/20210416124819.A3B26A005C@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/hcd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 92848629cc61..035d4911a3c3 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -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, -- cgit v1.2.3