diff options
| author | Artur Petrosyan <Arthur.Petrosyan@synopsys.com> | 2021-04-16 14:48:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 11:55:34 +0200 |
| commit | ae0da4fd225804a2c5c60a03b16fcf7d930d8581 (patch) | |
| tree | b8c25283447b8d4a375dabd5949dff6054a775b3 /drivers/usb | |
| parent | usb: dwc2: Add hibernation entering flow by system suspend (diff) | |
| download | linux-ae0da4fd225804a2c5c60a03b16fcf7d930d8581.tar.xz linux-ae0da4fd225804a2c5c60a03b16fcf7d930d8581.zip | |
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.c | 10 |
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, |