From: Greg KH <gregkh@linuxfoundation.org>
To: Zongmin Zhou <min_halo@163.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>,
shuah@kernel.org, valentina.manea.m@gmail.com, i@zenithal.me,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
zhouzongmin@kylinos.cn
Subject: Re: [PATCH v2] usbip: convert to use faux_device
Date: Wed, 9 Jul 2025 12:06:57 +0200 [thread overview]
Message-ID: <2025070949-activist-mammal-b806@gregkh> (raw)
In-Reply-To: <4759911b-8c35-4ca9-bc34-09dd41b14582@163.com>
On Wed, Jul 09, 2025 at 05:07:24PM +0800, Zongmin Zhou wrote:
> > > In fact, I've experimented with adding PM hooks to the faux bus,
> > > and found that faux bus devices then behave identically to platform
> > > bus devices during suspend/resume.
> > > See the attachment.
> > >
> >
> > Thanks for checking this scenario. No surprises here.
> Another part of my purpose in doing this is that the vhci-hcd driver seems
> should still retain suspend/resume hooks. Therefore, the faux bus should
> add corresponding hooks to allow the driver to call its own pm functions.
> Though currently don't know how to fix this problem yet.
I have no problem with adding the pm functions to the faux bus, BUT it
needs to make sense as to why they would be needed at all as this is not
a "real" device or bus that should need to do anything when
suspend/resume happens.
thanks,
greg k-h
next prev parent reply other threads:[~2025-07-09 10:07 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-08 9:11 [PATCH 0/2] some changes based on faux bus Zongmin Zhou
2025-05-08 9:11 ` [PATCH 1/2] driver core:add device's platform_data set for faux device Zongmin Zhou
2025-05-08 9:45 ` Greg KH
2025-05-09 2:41 ` Zongmin Zhou
2025-05-21 10:51 ` Greg KH
2025-05-28 9:21 ` Zongmin Zhou
2025-05-08 9:11 ` [PATCH 2/2] usbip: convert to use faux_device Zongmin Zhou
2025-05-09 10:42 ` kernel test robot
2025-06-04 6:54 ` [PATCH v2] " Zongmin Zhou
2025-06-10 15:15 ` Shuah Khan
2025-06-19 11:02 ` Greg KH
2025-06-19 11:01 ` Greg KH
2025-06-20 2:16 ` Zongmin Zhou
2025-06-20 4:29 ` Greg KH
2025-06-20 9:19 ` Zongmin Zhou
2025-06-20 9:27 ` Greg KH
2025-06-20 17:26 ` Shuah Khan
2025-06-24 3:21 ` Zongmin Zhou
2025-07-01 22:56 ` Shuah Khan
2025-07-02 2:12 ` Zongmin Zhou
2025-07-02 23:54 ` Shuah Khan
2025-07-03 6:04 ` Zongmin Zhou
2025-07-08 18:16 ` Shuah Khan
2025-07-09 9:07 ` Zongmin Zhou
2025-07-09 10:06 ` Greg KH [this message]
2025-07-09 14:20 ` Alan Stern
2025-07-09 21:49 ` Shuah Khan
2025-07-09 21:57 ` Shuah Khan
2025-07-10 14:06 ` Alan Stern
2025-07-10 20:33 ` Shuah Khan
2025-07-11 5:56 ` Greg KH
2025-07-14 5:31 ` Zongmin Zhou
2025-07-09 21:33 ` Shuah Khan
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