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Message-ID: <0d6d1182-921e-1da2-b315-427f25228d12@prolan.hu> Date: Wed, 31 Aug 2022 15:03:40 +0200 From: Csókás Bence <csokas.bence@...lan.hu> To: Sasha Levin <sashal@...nel.org>, <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org> CC: "David S . Miller" <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>, <netdev@...r.kernel.org> Subject: Re: [PATCH AUTOSEL 5.15 17/23] fec: Restart PPS after link state change On 2022. 08. 30. 19:21, Sasha Levin wrote: > From: Csókás Bence <csokas.bence@...lan.hu> > > [ Upstream commit f79959220fa5fbda939592bf91c7a9ea90419040 ] > > On link state change, the controller gets reset, > causing PPS to drop out and the PHC to lose its > time and calibration. So we restart it if needed, > restoring calibration and time registers. There is an ongoing investigation on netdev@ about a potential kernel panic on kernels newer than 5.12 with this patch applied. Please hold off on backporting to 5.15 until the bugfix is applied to upstream.
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