patch "usb: dwc3: gadget: Enable suspend events" added to usb-linus

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

usb: dwc3: gadget: Enable suspend events

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 d1d90dd27254c44d087ad3f8b5b3e4fff0571f45 Mon Sep 17 00:00:00 2001
From: Jack Pham <[email protected]>
Date: Wed, 28 Apr 2021 02:01:10 -0700
Subject: usb: dwc3: gadget: Enable suspend events

commit 72704f876f50 ("dwc3: gadget: Implement the suspend entry event handler") introduced (nearly 5 years ago!) an interrupt handler for U3/L1-L2 suspend events. The problem is that these events aren't currently enabled in the DEVTEN register so the handler is never even invoked. Fix this simply by enabling the corresponding bit in dwc3_gadget_enable_irq() using the same revision check as found in the handler.

---
 drivers/usb/dwc3/gadget.c | 4 ++++
 1 file changed, 4 insertions(+)

index dd80e5ca8c78..cab3a9184068 100644
@@ -2323,6 +2323,10 @@ static void dwc3_gadget_enable_irq(struct dwc3 *dwc)
 	if (DWC3_VER_IS_PRIOR(DWC3, 250A))
 		reg |= DWC3_DEVTEN_ULSTCNGEN;
 
+	/* On 2.30a and above this bit enables U3/L2-L1 Suspend Events */
+	if (!DWC3_VER_IS_PRIOR(DWC3, 230A))
+		reg |= DWC3_DEVTEN_EOPFEN;
+
 	dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);
 }
 

2.31.1