From: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Date: Tue, 13 Apr 2021 07:36:45 +0000 (+0400)
Subject: usb: dwc2: Add exit clock gating when port reset is asserted
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5f9e60c06175c3525c2f7ae1d6807f7d6c61efe3;p=linux.git

usb: dwc2: Add exit clock gating when port reset is asserted

Adds clock gating exit flow when set port feature
reset is received in suspended state.

Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073646.27217A0094@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 f1c24c15d1854..27f030d5de54b 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -3712,6 +3712,10 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
 						"exit partial_power_down failed\n");
 			}
 
+			if (hsotg->params.power_down ==
+			    DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+				dwc2_host_exit_clock_gating(hsotg, 0);
+
 			hprt0 = dwc2_read_hprt0(hsotg);
 			dev_dbg(hsotg->dev,
 				"SetPortFeature - USB_PORT_FEAT_RESET\n");