linux-kernel - Re: [PATCH v1 0/3] Fix dpm_list ordering issue due to fw

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Message-ID: <CAJZ5v0gPKHSpC+9BNt_n_wP+8Lmekb1VapfgHPwenHopekHV=w@mail.gmail.com>
Date:   Tue, 7 Jul 2020 17:56:16 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Saravana Kannan <saravanak@...gle.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Cc: Android Kernel" <kernel-team@...roid.com>
Subject: Re: [PATCH v1 0/3] Fix dpm_list ordering issue due to fw_devlink optimization

On Wed, Jul 1, 2020 at 9:43 PM Saravana Kannan <saravanak@...gle.com> wrote:
>
> When commit 93d2e4322aa7 ("of: platform: Batch fwnode parsing when
> adding all top level devices") enabled batch processing of fw_devlink to
> optimize the parsing time, it caused a suspend/resume regression due to
> the use of deferred probing early on at boot.
>
> This series fixes the regression by avoiding the use of deferred probing
> when optimizing fw_devlink parsing.
>
> Saravana Kannan (3):
>   driver core: Don't do deferred probe in parallel with kernel_init
>     thread
>   driver core: Rename dev_links_info.defer_sync to defer_hook
>   driver core: Avoid deferred probe due to fw_devlink_pause/resume()
>
>  drivers/base/base.h    |  1 -
>  drivers/base/core.c    | 44 ++++++++++++++++++++++++++++++------------
>  drivers/base/dd.c      |  5 -----
>  include/linux/device.h |  5 +++--
>  4 files changed, 35 insertions(+), 20 deletions(-)
>
> --

Geert, any chance to test this series on top of 5.8-rc?  It is
expected to fix the suspend/resume regression reported by you.

Cheers!