From: Benson Leung <bleung@google.com>
To: Andrei Kuchynski <akuchynski@chromium.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jameson Thies <jthies@google.com>,
Abhishek Pandit-Subedi <abhishekpandit@chromium.org>,
Benson Leung <bleung@chromium.org>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>,
Pooja Katiyar <pooja.katiyar@intel.com>,
Madhu M <madhu.m@intel.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH v2 2/2] usb: typec: ucsi: displayport: Fix NULL pointer access
Date: Thu, 24 Apr 2025 16:20:25 +0000 [thread overview]
Message-ID: <aApkyew8pxtOonFK@google.com> (raw)
In-Reply-To: <20250424084429.3220757-3-akuchynski@chromium.org>
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On Thu, Apr 24, 2025 at 08:44:29AM +0000, Andrei Kuchynski wrote:
> This patch ensures that the UCSI driver waits for all pending tasks in the
> ucsi_displayport_work workqueue to finish executing before proceeding with
> the partner removal.
>
> Cc: stable@vger.kernel.org
> Fixes: af8622f6a585 ("usb: typec: ucsi: Support for DisplayPort alt mode")
> Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
> ---
> drivers/usb/typec/ucsi/displayport.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/usb/typec/ucsi/displayport.c b/drivers/usb/typec/ucsi/displayport.c
> index acd053d4e38c..8aae80b457d7 100644
> --- a/drivers/usb/typec/ucsi/displayport.c
> +++ b/drivers/usb/typec/ucsi/displayport.c
> @@ -299,6 +299,8 @@ void ucsi_displayport_remove_partner(struct typec_altmode *alt)
> if (!dp)
> return;
>
> + cancel_work_sync(&dp->work);
> +
> dp->data.conf = 0;
> dp->data.status = 0;
> dp->initialized = false;
> --
> 2.49.0.805.g082f7c87e0-goog
>
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prev parent reply other threads:[~2025-04-24 16:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-24 8:44 [PATCH v2 0/2] Fix thread synchronization issues Andrei Kuchynski
2025-04-24 8:44 ` [PATCH v2 1/2] usb: typec: ucsi: displayport: Fix deadlock Andrei Kuchynski
2025-04-28 13:23 ` Heikki Krogerus
2025-04-24 8:44 ` [PATCH v2 2/2] usb: typec: ucsi: displayport: Fix NULL pointer access Andrei Kuchynski
2025-04-24 16:20 ` Benson Leung [this message]
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