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authorArtur Petrosyan <Arthur.Petrosyan@synopsys.com>2021-04-16 15:48:18 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-04-22 12:55:34 +0300
commitae0da4fd225804a2c5c60a03b16fcf7d930d8581 (patch)
treeb8c25283447b8d4a375dabd5949dff6054a775b3 /drivers/usb
parent755d0effebb82caf397b719602b9e76b1d5e2831 (diff)
downloadlinux-ae0da4fd225804a2c5c60a03b16fcf7d930d8581.tar.xz
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/dwc2/hcd.c10
1 files changed, 10 insertions, 0 deletions
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,