From: Michael Grzeschik <mgr@pengutronix.de>
To: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Cc: Eric Van Hensbergen <ericvh@kernel.org>,
Latchesar Ionkov <lucho@ionkov.net>,
Dominique Martinet <asmadeus@codewreck.org>,
Christian Schoenebeck <linux_oss@crudebyte.com>,
Jonathan Corbet <corbet@lwn.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
v9fs@lists.linux.dev, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
kernel@pengutronix.de
Subject: Re: [PATCH v4 2/3] net/9p/usbg: Add new usb gadget function transport
Date: Thu, 16 May 2024 20:49:02 +0200 [thread overview]
Message-ID: <ZkZVHoHcdoNF6T2-@pengutronix.de> (raw)
In-Reply-To: <2f36e766-054c-4001-addf-fe388916d858@collabora.com>
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Hi
On Fri, May 10, 2024 at 04:11:27PM +0200, Andrzej Pietrasiewicz wrote:
>W dniu 10.05.2024 o 12:11, Michael Grzeschik pisze:
>>On Fri, May 10, 2024 at 11:25:47AM +0200, Andrzej Pietrasiewicz wrote:
>>>Hi Michael,
>>>
>>>W dniu 30.04.2024 o 01:33, Michael Grzeschik pisze:
>>>>Add the new gadget function for 9pfs transport. This function is
>>>>defining an simple 9pfs transport interface that consists of one in and
>>>>one out endpoint. The endpoints transmit and receive the 9pfs protocol
>>>>payload when mounting a 9p filesystem over usb.
>>>>
>>>>Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
>>>>
>>>>---
>>>>v3 -> v4:
>>>> - implemented conn_cancel
>>>
>>>I tried this scenario:
>>>
>>>1) run all the components and have 9pfs up and running
>>>2) stop the forwarder
>>>3) umount -f at the gadget side - this indeed succeeds now in v4
>>>4) start the forwarder again
>>>5) mount at the gadget side - this hangs.
>>>
>>>Did this scenario work for you?
>>
>>I actually tested this exact scenario. So this is
>>suprising. I will try this again just to be sure
>>that I did send the latest version.
>>
>>My latest testsetup included the dummy_hcd. Did you test on real hardware?
>
>Yes, I did.
I just also tested this again on real hardware. With the imx6 chipidea
udc I indeed see that this is stuck after the first round of mount and
remount. With the musb core on the beaglebone this seems to be fine.
While debugging this I also ran into some shutdown issues and lockdep
issues I see because the complete handler is possible to be resumed
immedeatly on musb, which is odd. However I fixed/fix them and send an
v5 afterwards.
Regarding the hang on the imx6, which hardware did you test this on?
Michael
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next prev parent reply other threads:[~2024-05-16 18:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 23:33 [PATCH v4 0/3] usb: gadget: 9pfs transport Michael Grzeschik
2024-04-29 23:33 ` [PATCH v4 1/3] usb: gadget: function: move u_f.h to include/linux/usb/ Michael Grzeschik
2024-04-30 1:51 ` Alan Stern
2024-05-01 8:38 ` Michael Grzeschik
2024-05-01 14:19 ` Alan Stern
2024-04-29 23:33 ` [PATCH v4 2/3] net/9p/usbg: Add new usb gadget function transport Michael Grzeschik
2024-05-10 9:25 ` Andrzej Pietrasiewicz
2024-05-10 10:11 ` Michael Grzeschik
2024-05-10 14:11 ` Andrzej Pietrasiewicz
2024-05-16 18:49 ` Michael Grzeschik [this message]
2024-05-16 19:51 ` Michael Grzeschik
2024-05-28 5:21 ` Michael Grzeschik
2024-04-29 23:33 ` [PATCH v4 3/3] tools: usb: p9_fwd: add usb gadget packet forwarder script Michael Grzeschik
2024-05-10 8:29 ` Andrzej Pietrasiewicz
2024-05-10 8:32 ` Andrzej Pietrasiewicz
2024-05-28 5:19 ` Michael Grzeschik
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