All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jonathan Cameron <jic23@kernel.org>
To: Sven Van Asbroeck <thesven73@gmail.com>
Cc: Hartmut Knaack <knaack.h@gmx.de>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	Michal Simek <michal.simek@xilinx.com>,
	Manish Narani <manish.narani@xilinx.com>,
	linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] iio: adc: xilinx: prevent touching unclocked h/w on remove
Date: Sat, 16 Mar 2019 15:51:28 +0000	[thread overview]
Message-ID: <20190316155128.16ef1da1@archlinux> (raw)
In-Reply-To: <20190310185826.25916-3-TheSven73@gmail.com>

On Sun, 10 Mar 2019 14:58:26 -0400
Sven Van Asbroeck <thesven73@gmail.com> wrote:

> In remove, the clock is disabled before canceling the
> delayed work. This means that the delayed work may be
> touching unclocked hardware.
> 
> Fix by disabling the clock after the delayed work is
> fully canceled. This is consistent with the probe error
> path order.
> 
> Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Applied to the fixes-togreg branch of iio.git.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/xilinx-xadc-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
> index 15e1a103f37d..1ae86e7359f7 100644
> --- a/drivers/iio/adc/xilinx-xadc-core.c
> +++ b/drivers/iio/adc/xilinx-xadc-core.c
> @@ -1320,8 +1320,8 @@ static int xadc_remove(struct platform_device *pdev)
>  		iio_triggered_buffer_cleanup(indio_dev);
>  	}
>  	free_irq(xadc->irq, indio_dev);
> -	clk_disable_unprepare(xadc->clk);
>  	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
> +	clk_disable_unprepare(xadc->clk);
>  	kfree(xadc->data);
>  	kfree(indio_dev->channels);
>  


WARNING: multiple messages have this Message-ID (diff)
From: Jonathan Cameron <jic23@kernel.org>
To: Sven Van Asbroeck <thesven73@gmail.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
	linux-iio@vger.kernel.org, Michal Simek <michal.simek@xilinx.com>,
	linux-kernel@vger.kernel.org,
	Manish Narani <manish.narani@xilinx.com>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	Hartmut Knaack <knaack.h@gmx.de>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] iio: adc: xilinx: prevent touching unclocked h/w on remove
Date: Sat, 16 Mar 2019 15:51:28 +0000	[thread overview]
Message-ID: <20190316155128.16ef1da1@archlinux> (raw)
In-Reply-To: <20190310185826.25916-3-TheSven73@gmail.com>

On Sun, 10 Mar 2019 14:58:26 -0400
Sven Van Asbroeck <thesven73@gmail.com> wrote:

> In remove, the clock is disabled before canceling the
> delayed work. This means that the delayed work may be
> touching unclocked hardware.
> 
> Fix by disabling the clock after the delayed work is
> fully canceled. This is consistent with the probe error
> path order.
> 
> Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Applied to the fixes-togreg branch of iio.git.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/xilinx-xadc-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
> index 15e1a103f37d..1ae86e7359f7 100644
> --- a/drivers/iio/adc/xilinx-xadc-core.c
> +++ b/drivers/iio/adc/xilinx-xadc-core.c
> @@ -1320,8 +1320,8 @@ static int xadc_remove(struct platform_device *pdev)
>  		iio_triggered_buffer_cleanup(indio_dev);
>  	}
>  	free_irq(xadc->irq, indio_dev);
> -	clk_disable_unprepare(xadc->clk);
>  	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
> +	clk_disable_unprepare(xadc->clk);
>  	kfree(xadc->data);
>  	kfree(indio_dev->channels);
>  


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2019-03-16 15:51 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-10 18:58 [PATCH 1/3] iio: adc: xilinx: fix potential use-after-free on remove Sven Van Asbroeck
2019-03-10 18:58 ` Sven Van Asbroeck
2019-03-10 18:58 ` [PATCH 2/3] iio: adc: xilinx: fix potential use-after-free on probe Sven Van Asbroeck
2019-03-10 18:58   ` Sven Van Asbroeck
2019-03-16 15:49   ` Jonathan Cameron
2019-03-16 15:49     ` Jonathan Cameron
2019-03-10 18:58 ` [PATCH 3/3] iio: adc: xilinx: prevent touching unclocked h/w on remove Sven Van Asbroeck
2019-03-10 18:58   ` Sven Van Asbroeck
2019-03-16 15:51   ` Jonathan Cameron [this message]
2019-03-16 15:51     ` Jonathan Cameron
2019-03-17 16:07     ` Sven Van Asbroeck
2019-03-17 16:07       ` Sven Van Asbroeck
2019-03-16 15:47 ` [PATCH 1/3] iio: adc: xilinx: fix potential use-after-free " Jonathan Cameron
2019-03-16 15:47   ` Jonathan Cameron

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=20190316155128.16ef1da1@archlinux \
    --to=jic23@kernel.org \
    --cc=knaack.h@gmx.de \
    --cc=lars@metafoo.de \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-iio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=manish.narani@xilinx.com \
    --cc=michal.simek@xilinx.com \
    --cc=pmeerw@pmeerw.net \
    --cc=thesven73@gmail.com \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.