This is a note to let you know that I've just added the patch titled
usb: dwc3: gadget: Enable suspend events
to the 5.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-dwc3-gadget-enable-suspend-events.patch
and it can be found in the queue-5.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d1d90dd27254c44d087ad3f8b5b3e4fff0571f45 Mon Sep 17 00:00:00 2001
From: Jack Pham <jackp@xxxxxxxxxxxxxx>
Date: Wed, 28 Apr 2021 02:01:10 -0700
Subject: usb: dwc3: gadget: Enable suspend events
From: Jack Pham <jackp@xxxxxxxxxxxxxx>
commit d1d90dd27254c44d087ad3f8b5b3e4fff0571f45 upstream.
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.
Fixes: 72704f876f50 ("dwc3: gadget: Implement the suspend entry event handler")
Acked-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Jack Pham <jackp@xxxxxxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210428090111.3370-1-jackp@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/gadget.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2302,6 +2302,10 @@ static void dwc3_gadget_enable_irq(struc
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);
}
Patches currently in stable-queue which might be from jackp@xxxxxxxxxxxxxx are
queue-5.12/usb-dwc3-gadget-enable-suspend-events.patch
queue-5.12/usb-dwc3-gadget-free-gadget-structure-only-after-fre.patch
queue-5.12/usb-typec-ucsi-retrieve-all-the-pdos-instead-of-just-the-first-4.patch
