linux-kernel - Re: [PATCH net-next v2 10/15] net: lan969x: add PTP handler function

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Message-ID: <20241030180742.2143cb59@kernel.org>
Date: Wed, 30 Oct 2024 18:07:42 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Daniel Machon <daniel.machon@...rochip.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Andrew Lunn
 <andrew+netdev@...n.ch>, Lars Povlsen <lars.povlsen@...rochip.com>, Steen
 Hegelund <Steen.Hegelund@...rochip.com>, <horatiu.vultur@...rochip.com>,
 <jensemil.schulzostergaard@...rochip.com>,
 <Parthiban.Veerasooran@...rochip.com>, <Raju.Lakkaraju@...rochip.com>,
 <UNGLinuxDriver@...rochip.com>, Richard Cochran <richardcochran@...il.com>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, <jacob.e.keller@...el.com>,
 <ast@...erby.net>, <maxime.chevallier@...tlin.com>, <horms@...nel.org>,
 <netdev@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
 <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH net-next v2 10/15] net: lan969x: add PTP handler
 function

On Thu, 24 Oct 2024 00:01:29 +0200 Daniel Machon wrote:
> +		spin_lock_irqsave(&port->tx_skbs.lock, flags);
> +		skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) {
> +			if (SPARX5_SKB_CB(skb)->ts_id != id)
> +				continue;
> +
> +			__skb_unlink(skb, &port->tx_skbs);
> +			skb_match = skb;
> +			break;
> +		}
> +		spin_unlock_irqrestore(&port->tx_skbs.lock, flags);

For a followup for both drivers -- you're mixing irqsave and bare
spin_lock() here. The _irqsave/_irqrestore is not necessary, let's
drop it.

> +		spin_lock(&sparx5->ptp_ts_id_lock);