From: Ulf Hansson <ulf.hansson@linaro.org>
To: Saravana Kannan <saravanak@google.com>, Rob Herring <robh+dt@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>,
Neil Armstrong <narmstrong@baylibre.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Magnus Damm <magnus.damm@gmail.com>,
Tony Lindgren <tony@atomide.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Damien Le Moal <damien.lemoal@wdc.com>,
Android Kernel Team <kernel-team@android.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-oxnas@groups.io,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
linux-omap <linux-omap@vger.kernel.org>,
linux-riscv <linux-riscv@lists.infradead.org>
Subject: Re: [PATCH v3 1/2] drivers: bus: simple-pm-bus: Add support for probing simple bus only devices
Date: Fri, 24 Sep 2021 13:49:55 +0200 [thread overview]
Message-ID: <CAPDyKFqRR-GD=xZo27a9MgwzKT9mar4m0Bdki1VBxnsZaQy1_g@mail.gmail.com> (raw)
In-Reply-To: <CAPDyKFqkvN=ZrfAnj4CqfjBu_Pj0YH9txnkP-1d=FhaEhbPrPA@mail.gmail.com>
On Thu, 9 Sept 2021 at 13:01, Ulf Hansson <ulf.hansson@linaro.org> wrote:
>
> On Sat, 4 Sept 2021 at 02:05, Saravana Kannan <saravanak@google.com> wrote:
> >
> > fw_devlink could end up creating device links for bus only devices.
> > However, bus only devices don't get probed and can block probe() or
> > sync_state() [1] call backs of other devices. To avoid this, probe these
> > devices using the simple-pm-bus driver.
> >
> > However, there are instances of devices that are not simple buses (they
> > get probed by their specific drivers) that also list the "simple-bus"
> > (or other bus only compatible strings) in their compatible property to
> > automatically populate their child devices. We still want these devices
> > to get probed by their specific drivers. So, we make sure this driver
> > only probes devices that are only buses.
> >
> > [1] - https://lore.kernel.org/lkml/CAPDyKFo9Bxremkb1dDrr4OcXSpE0keVze94Cm=zrkOVxHHxBmQ@mail.gmail.com/
> > Signed-off-by: Saravana Kannan <saravanak@google.com>
> > Tested-by: Saravana Kannan <saravanak@google.com>
>
> Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Saravana, Rob,
I have been following your latest discussion in this thread - and it
looks like you guys are moving towards a consensus.
Although, if there is anything I can do to help to complete this, just
tell me and I will jump in immediately.
[...]
Kind regards
Uffe
next prev parent reply other threads:[~2021-09-24 11:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-04 0:05 [PATCH v3 0/2] Fix simple-bus issues with fw_devlink Saravana Kannan
2021-09-04 0:05 ` [PATCH v3 1/2] drivers: bus: simple-pm-bus: Add support for probing simple bus only devices Saravana Kannan
2021-09-06 7:53 ` Geert Uytterhoeven
2021-09-07 7:01 ` Saravana Kannan
2021-09-09 0:15 ` Rob Herring
2021-09-09 0:57 ` Saravana Kannan
2021-09-09 14:01 ` Rob Herring
2021-09-09 18:11 ` Saravana Kannan
2021-09-10 15:21 ` Rob Herring
2021-09-07 10:41 ` Ulf Hansson
2021-09-08 22:02 ` Saravana Kannan
2021-09-09 11:01 ` Ulf Hansson
2021-09-24 11:49 ` Ulf Hansson [this message]
2021-09-24 20:20 ` Saravana Kannan
2021-09-04 0:05 ` [PATCH v3 2/2] drivers: bus: Delete CONFIG_SIMPLE_PM_BUS Saravana Kannan
2021-09-07 10:29 ` Ulf Hansson
2021-09-08 22:01 ` Saravana Kannan
2021-09-09 11:02 ` Ulf Hansson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAPDyKFqRR-GD=xZo27a9MgwzKT9mar4m0Bdki1VBxnsZaQy1_g@mail.gmail.com' \
--to=ulf.hansson@linaro.org \
--cc=catalin.marinas@arm.com \
--cc=damien.lemoal@wdc.com \
--cc=geert+renesas@glider.be \
--cc=kernel-team@android.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=linux-oxnas@groups.io \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux@armlinux.org.uk \
--cc=magnus.damm@gmail.com \
--cc=narmstrong@baylibre.com \
--cc=robh+dt@kernel.org \
--cc=saravanak@google.com \
--cc=tony@atomide.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).