linux-kernel - Re: [PATCH 2/3] usb: typec: ucsi: Move unregister out of atomic section

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Message-ID: <ZsNly-WqnuzBMOwL@hovoldconsulting.com>
Date: Mon, 19 Aug 2024 17:33:31 +0200
From: Johan Hovold <johan@...nel.org>
To: Bjorn Andersson <quic_bjorande@...cinc.com>
Cc: Sebastian Reichel <sre@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Johan Hovold <johan+linaro@...nel.org>,
	Chris Lew <quic_clew@...cinc.com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Stephen Boyd <swboyd@...omium.org>,
	Amit Pundir <amit.pundir@...aro.org>, linux-arm-msm@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 2/3] usb: typec: ucsi: Move unregister out of atomic
 section

On Sun, Aug 18, 2024 at 04:17:38PM -0700, Bjorn Andersson wrote:

> @@ -68,6 +68,9 @@ struct pmic_glink_ucsi {
>  
>  	struct work_struct notify_work;
>  	struct work_struct register_work;
> +	spinlock_t state_lock;

You also never initialise this lock...

Lockdep would have let you know with a big splat.

Johan