From: Roger Quadros <rogerq@kernel.org>
To: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: dwc3 gadget: controller stop times out on system sleep
Date: Wed, 26 Apr 2023 19:17:22 +0300 [thread overview]
Message-ID: <24c9f271-ed74-fffa-a49f-6e83da857593@kernel.org> (raw)
Hi Thinh,
On Linux kernel v6.3
Test procedure:
- modprobe g_zero
- Connect to PC host
- systemctl suspend
A large delay of 3 seconds is observed. The delay comes from dwc3_gadget_suspend()->dwc3_gadget_run_stop() waiting for DWC3_DSTS_DEVCTRLHLT to be set.
It returns -ETIMEDOUT.
Are we missing something to do a clean stop during suspend?
FYI. Unloading g_zero does not show this delay on stop.
cheers,
-roger
next reply other threads:[~2023-04-26 16:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-26 16:17 Roger Quadros [this message]
2023-04-26 20:01 ` dwc3 gadget: controller stop times out on system sleep Thinh Nguyen
2023-04-27 16:26 ` Roger Quadros
2023-04-27 22:13 ` Thinh Nguyen
2023-04-28 12:04 ` Roger Quadros
2023-04-28 18:33 ` Thinh Nguyen
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