linux-kernel - Re: [PATCH RFC net-next v2 08/18] net: pse-pd: Add support for reporting events

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Message-ID: <20241105104824.2bc51cf7@kmaincent-XPS-13-7390>
Date: Tue, 5 Nov 2024 10:48:24 +0100
From: Kory Maincent <kory.maincent@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Oleksij Rempel <o.rempel@...gutronix.de>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Jonathan Corbet
 <corbet@....net>, Donald Hunter <donald.hunter@...il.com>, Rob Herring
 <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>, Simon Horman
 <horms@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>, Russell King
 <linux@...linux.org.uk>, Liam Girdwood <lgirdwood@...il.com>, Mark Brown
 <broonie@...nel.org>, Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 linux-doc@...r.kernel.org, Kyle Swenson <kyle.swenson@....tech>, Dent
 Project <dentproject@...uxfoundation.org>, kernel@...gutronix.de, Maxime
 Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH RFC net-next v2 08/18] net: pse-pd: Add support for
 reporting events

On Thu, 31 Oct 2024 22:54:00 +0100
Andrew Lunn <andrew@...n.ch> wrote:

> > +static struct phy_device *
> > +pse_control_find_phy_by_id(struct pse_controller_dev *pcdev, int id)
> > +{
> > +	struct pse_control *psec;
> > +
> > +	mutex_lock(&pse_list_mutex);
> > +	list_for_each_entry(psec, &pcdev->pse_control_head, list) {
> > +		if (psec->id == id)
> > +			return psec->attached_phydev;  
> 
> The mutex is still locked. I'm surprised your testing did not
> deadlock, and that none of the automated tools have reported this.

Ouch indeed! As explained in the cover letter, this v2 has not been fully
tested.
But I have built it with smatch and sparse. Weirdly they didn't find it. 
Thanks for seeing it.

> ---
> pw-bot: cr

Does RFC patch series pass through the netdev CI build test? 

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com