From: Ulf Hansson <ulf.hansson@linaro.org>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux PM <linux-pm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alan Stern <stern@rowland.harvard.edu>,
USB list <linux-usb@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Kishon Vijay Abraham I <kishon@ti.com>
Subject: Re: [PATCH] PM / runtime: Drop children check from __pm_runtime_set_status()
Date: Tue, 5 Dec 2017 16:48:46 +0100 [thread overview]
Message-ID: <CAPDyKFojEgSN9TfxywYW6Td-j--QzdZ5MNJjBXhJ_vQ=Rz=Aew@mail.gmail.com> (raw)
In-Reply-To: <TY1PR06MB0992214C75585618A1400A1CD83D0@TY1PR06MB0992.apcprd06.prod.outlook.com>
On 5 December 2017 at 04:23, Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> Hi,
>
>> From: Ulf Hansson, Sent: Monday, December 4, 2017 7:41 PM
>>
>> On 1 December 2017 at 12:03, Yoshihiro Shimoda
>> <yoshihiro.shimoda.uh@renesas.com> wrote:
> <snip>
>> > Sure! I tested your patch, and then the following message disappeared!
>> >
>> > Enabling runtime PM for inactive device (ee080200.usb-phy) with active children
>>
>> Great, that confirms my theory.
>>
>> I will re-work the patch and re-post it to see what people thinks about it.
>
> Thank you!
>
>> >
>> > However, the following message still exists.
>> >
>> > Enabling runtime PM for inactive device (ee080000.usb) with active children
>> >
>> > So, I guess ohci-platform.c also has similar issue.
>>
>> Yes, very likely!
>>
>> However, I need some more time to look into this to be able to suggest
>> a solution.
>
> I found a solution and sent a report as below:
> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1551146.html
>
> What do you think about using pm_runtime_forbid()?
As both Alan and Rafael pointed out in their replies, this is not the
right solution.
However, what is indeed interesting is how it can silence the error
messages. I keep this is mind while later moving forward.
Kind regards
Uffe
next prev parent reply other threads:[~2017-12-05 15:48 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-12 0:27 [PATCH] PM / runtime: Drop children check from __pm_runtime_set_status() Rafael J. Wysocki
2017-11-13 13:26 ` Ulf Hansson
2017-11-13 21:50 ` Rafael J. Wysocki
2017-11-13 21:58 ` Rafael J. Wysocki
2017-11-14 9:13 ` Ulf Hansson
2017-11-14 9:56 ` Ulf Hansson
2017-11-14 21:44 ` Rafael J. Wysocki
2017-11-15 7:22 ` Ulf Hansson
2017-11-16 9:22 ` Johan Hovold
2017-11-16 13:57 ` Rafael J. Wysocki
2017-11-28 10:58 ` Geert Uytterhoeven
2017-11-28 12:48 ` Yoshihiro Shimoda
2017-11-28 15:06 ` Alan Stern
2017-11-29 8:21 ` Yoshihiro Shimoda
2017-11-28 17:22 ` Ulf Hansson
2017-11-29 8:21 ` Yoshihiro Shimoda
2017-11-29 9:24 ` Ulf Hansson
2017-11-29 9:43 ` Geert Uytterhoeven
2017-11-29 9:59 ` Ulf Hansson
2017-11-29 14:09 ` Geert Uytterhoeven
2017-11-30 12:51 ` Yoshihiro Shimoda
2017-12-01 9:22 ` Ulf Hansson
2017-12-01 11:03 ` Yoshihiro Shimoda
2017-12-01 11:54 ` Yoshihiro Shimoda
2017-12-04 10:41 ` Ulf Hansson
2017-12-05 3:23 ` Yoshihiro Shimoda
2017-12-05 3:23 ` Yoshihiro Shimoda
2017-12-05 15:03 ` Alan Stern
2017-12-05 15:23 ` Rafael J. Wysocki
2017-12-05 15:48 ` Ulf Hansson [this message]
2017-11-28 14:17 ` Rafael J. Wysocki
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