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Subject: Re: [PATCH] USB: quirks: Add USB_QUIRK_DISCONNECT_SUSPEND quirk for
 Lenovo A630Z TIO built-in usb-audio card
From:   Kai-Heng Feng <kai.heng.feng@canonical.com>
In-Reply-To: <20201118110639.7455-1-penghao@uniontech.com>
Date:   Wed, 18 Nov 2020 19:25:07 +0800
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>, johan@kernel.org,
        jonathan@jdcox.net, tomasz@meresinski.eu, hdegoede@redhat.com,
        dlaz@chromium.org, richard.o.dodd@gmail.com,
        kerneldev@karsmulder.nl, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org
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Message-Id: <91C616BC-3B99-4BB5-AEBE-6975CBFB29BA@canonical.com>
References: <20201118110639.7455-1-penghao@uniontech.com>
To:     penghao <penghao@uniontech.com>
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Hi penghao,

> On Nov 18, 2020, at 19:06, penghao <penghao@uniontech.com> wrote:
> 
> Add a USB_QUIRK_DISCONNECT_SUSPEND quirk for the Lenovo TIO built-in
> usb-audio. when A630Z going into S3,the system immediately wakeup 7-8
> seconds later by usb-audio disconnect interrupt to avoids the issue.
> 
> Seeking a better fix, we've tried a lot of things, including:
> - Check that the device's power/wakeup is disabled
> - Check that remote wakeup is off at the USB level
> - All the quirks in drivers/usb/core/quirks.c
>   e.g. USB_QUIRK_RESET_RESUME,
>        USB_QUIRK_RESET,
>        USB_QUIRK_IGNORE_REMOTE_WAKEUP,
>        USB_QUIRK_NO_LPM.
> 
> but none of that makes any difference.
> 
> There are no errors in the logs showing any suspend/resume-related issues.
> When the system wakes up due to the modem, log-wise it appears to be a
> normal resume.
> 
> Introduce a quirk to disable the port during suspend when the modem is
> detected.
> 
> Changes since v4
> - Fixed add a blank line
> 
> Changes since v3
> - Fixed spelling error on appropriate
> 
> Changes since v2
> - Add Changes commit format
> 
> Changes since v1
> - Change subject form "ALSA" to "USB:"
> - Adjust to appropriate line
> 
> Signed-off-by: penghao <penghao@uniontech.com>
> ---
> drivers/usb/core/quirks.c | 4 ++++
> 1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 7c1198f80c23..26b852ae0d85 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -410,6 +410,10 @@ static const struct usb_device_id usb_quirk_list[] = {
> 	{ USB_DEVICE(0x1532, 0x0116), .driver_info =
> 			USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
> 
> +	/* Lenovo ThinkCenter A630Z TI024Gen3 usb-audio */
> +	{ USB_DEVICE(0x17ef, 0xa012), .driver_info =
> +			USB_QUIRK_DISCONNECT_SUSPEND },
> +

Would it be possible to enable dynamic debug, reproduce the issue, and attach dmesg here? i.e.
# echo 'file drivers/usb/* +p; file drivers/usb/host/* +p' > /sys/kernel/debug/dynamic_debug/control
# echo mem > /sys/power/state
... and attach dmesg here.

Kai-Heng

> 	/* BUILDWIN Photo Frame */
> 	{ USB_DEVICE(0x1908, 0x1315), .driver_info =
> 			USB_QUIRK_HONOR_BNUMINTERFACES },
> -- 
> 2.11.0
> 
> 
>