netdev - Re: [PATCH net-next v3 1/2] drivers: net: stmmac: handle start time set in the past for flexible PPS

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Message-ID: <20250827193105.47aaa17b@kernel.org>
Date: Wed, 27 Aug 2025 19:31:05 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Gatien Chevallier <gatien.chevallier@...s.st.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre
 Torgue <alexandre.torgue@...s.st.com>, Richard Cochran
 <richardcochran@...il.com>, Rob Herring <robh@...nel.org>, Krzysztof
 Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 <netdev@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
 <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
 <devicetree@...r.kernel.org>
Subject: Re: [PATCH net-next v3 1/2] drivers: net: stmmac: handle start time
 set in the past for flexible PPS

On Wed, 27 Aug 2025 13:04:58 +0200 Gatien Chevallier wrote:
> +		curr_time = ns_to_timespec64(ns);
> +		if (target_ns < ns + PTP_SAFE_TIME_OFFSET_NS) {
> +			cfg->start = timespec64_add_safe(cfg->start, curr_time);

Is there a strong reason to use timespec64_add_safe()?
It's not exported to modules:
ERROR: modpost: "timespec64_add_safe" [drivers/net/ethernet/stmicro/stmmac/stmmac.ko] undefined!
-- 
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