patch "usb: dwc2: Prevent core suspend when port connection flag is 0" added to usb-linus

This is a note to let you know that I've just added the patch titled

usb: dwc2: Prevent core suspend when port connection flag is 0

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 93f672804bf2d7a49ef3fd96827ea6290ca1841e Mon Sep 17 00:00:00 2001
From: Artur Petrosyan <[email protected]>
Date: Fri, 26 Mar 2021 14:25:09 +0400
Subject: usb: dwc2: Prevent core suspend when port connection flag is 0

In host mode port connection status flag is "0" when loading the driver. After loading the driver system asserts suspend which is handled by "_dwc2_hcd_suspend()" function. Before the system suspend the port connection status is "0". As result need to check the "port_connect_status" if it is "0", then skipping entering to suspend.

---
 drivers/usb/dwc2/hcd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index 40e5655921bf..1a9789ec5847 100644
@@ -4322,7 +4322,8 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd)
 	if (hsotg->op_state == OTG_STATE_B_PERIPHERAL)
 		goto unlock;
 
-	if (hsotg->params.power_down > DWC2_POWER_DOWN_PARAM_PARTIAL)
+	if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL ||
+	    hsotg->flags.b.port_connect_status == 0)
 		goto skip_power_saving;
 
 	/*

2.31.0