linux-kernel - Re: [PATCH v3] driver core: platform: don't oops in platform

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Message-ID: <20201213102918.lpvhzbqwae63nns4@pengutronix.de>
Date:   Sun, 13 Dec 2020 11:29:18 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH v3] driver core: platform: don't oops in
 platform_shutdown() on unbound devices

On Sun, Dec 13, 2020 at 02:55:33AM +0300, Dmitry Baryshkov wrote:
> On shutdown the driver core calls the bus' shutdown callback also for
> unbound devices. A driver's shutdown callback however is only called for
> devices bound to this driver. Commit 9c30921fe799 ("driver core:
> platform: use bus_type functions") changed the platform bus from driver
> callbacks to bus callbacks, so the shutdown function must be prepared to
> be called without a driver. Add the corresponding check in the shutdown
> function.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Fixes: 9c30921fe799 ("driver core: platform: use bus_type functions")

nice commit log :-)

Reviewed-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Thanks
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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