From: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Date: Thu, 8 Apr 2021 09:45:25 +0000 (+0400)
Subject: usb: dwc2: Add exit partial power down when port reset is asserted
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e97570f7a72022b459ba0c8d1123019594ee8bdb;p=linux.git

usb: dwc2: Add exit partial power down when port reset is asserted

Adds Partial Power Down exiting flow when set port feature
reset is received in suspended state.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094526.4DD7AA022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 720354df014b6..7c7496719152d 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -3694,6 +3694,15 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
 			if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION &&
 			    hsotg->hibernated)
 				dwc2_exit_hibernation(hsotg, 0, 1, 1);
+
+			if (hsotg->in_ppd) {
+				retval = dwc2_exit_partial_power_down(hsotg, 1,
+								      true);
+				if (retval)
+					dev_err(hsotg->dev,
+						"exit partial_power_down failed\n");
+			}
+
 			hprt0 = dwc2_read_hprt0(hsotg);
 			dev_dbg(hsotg->dev,
 				"SetPortFeature - USB_PORT_FEAT_RESET\n");