netdev - Re: [PATCH v2 4/4] Revert "iommu/of: Delete usage of driver_deferred_probe_check

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Message-ID: <YwSLtPBeOotDSUa8@myrica>
Date:   Tue, 23 Aug 2022 09:11:32 +0100
From:   Jean-Philippe Brucker <jpb@...nel.org>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Peng Fan <peng.fan@....com>,
        Luca Weiss <luca.weiss@...rphone.com>,
        Doug Anderson <dianders@...omium.org>,
        Colin Foster <colin.foster@...advantage.com>,
        Tony Lindgren <tony@...mide.com>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        kernel-team@...roid.com, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, iommu@...ts.linux.dev,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 4/4] Revert "iommu/of: Delete usage of
 driver_deferred_probe_check_state()"

On Fri, Aug 19, 2022 at 03:16:14PM -0700, Saravana Kannan wrote:
> This reverts commit b09796d528bbf06e3e10a4a8f78038719da7ebc6.
> 
> An issue was reported[1] on the original commit. I'll need to address that
> before I can delete the use of driver_deferred_probe_check_state().  So,
> bring it back for now.
> 
> [1] - https://lore.kernel.org/lkml/4799738.LvFx2qVVIh@steina-w/

https://lore.kernel.org/lkml/Yv+dpeIPvde7oDHi@myrica/

> 
> Fixes: b09796d528bb ("iommu/of: Delete usage of driver_deferred_probe_check_state()")
> Reported-by: Jean-Philippe Brucker <jpb@...nel.org>
> Signed-off-by: Saravana Kannan <saravanak@...gle.com>

Tested-by: Jean-Philippe Brucker <jpb@...nel.org>

> ---
>  drivers/iommu/of_iommu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
> index 41f4eb005219..5696314ae69e 100644
> --- a/drivers/iommu/of_iommu.c
> +++ b/drivers/iommu/of_iommu.c
> @@ -40,7 +40,7 @@ static int of_iommu_xlate(struct device *dev,
>  	 * a proper probe-ordering dependency mechanism in future.
>  	 */
>  	if (!ops)
> -		return -ENODEV;
> +		return driver_deferred_probe_check_state(dev);
>  
>  	if (!try_module_get(ops->owner))
>  		return -ENODEV;
> -- 
> 2.37.1.595.g718a3a8f04-goog
>