linux-kernel - Re: [PATCH] driver core: Avoid pointless deferred probe attempts

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Message-ID: <CAGETcx_BJhR353sbMu2syiwMoep=-oJNAe-GAB_-yAPXGfihKw@mail.gmail.com>
Date:   Tue, 23 Feb 2021 11:56:10 -0800
From:   Saravana Kannan <saravanak@...gle.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] driver core: Avoid pointless deferred probe attempts

On Tue, Feb 23, 2021 at 2:10 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Saravana,
>
> On Thu, Feb 18, 2021 at 12:51 AM Saravana Kannan <saravanak@...gle.com> wrote:
> > There's no point in adding a device to the deferred probe list if we
> > know for sure that it doesn't have a matching driver. So, check if a
> > device can match with a driver before adding it to the deferred probe
> > list.
> >
> > Signed-off-by: Saravana Kannan <saravanak@...gle.com>
>
> Thanks for your patch!
>
> > ---
> > Geert,
> >
> > Can you give this a shot for your I2C DMA issue with fw_devlink=on?
>
> Yes, this makes I2C use DMA again on Salvator-XS during kernel boot-up.

Thanks for testing Geert!

> I haven't run any more elaborate tests on other platforms.

Yeah, this change should only go into 5.13 after it gets tested as
part of driver-core-next.

-Saravana