From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E41A226D05; Fri, 25 Sep 2026 22:33:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790375641; cv=none; b=Jz+ZwDYk4YdKN+DHh+UvKzRxse5+13OxqE8dyQ0vlDShv9MaV8PDame0LW7boUfXPwVhZKllHyofY8g2G8kgU1wuVPFddFSoiMA2yyCS17z07mIPUQ3G7h8HDs0stG/jKkQewXWh8MPN/DuvcktxwuGFjLRL70TonKqa0nRrDY4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790375641; c=relaxed/simple; bh=glUuKZKx5cqmlLMf4KB/vt8XRQXqy6FVeihuH84SKGQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=c2de9+/M3gVzCX5WODKBLWB8dBo3C5glU3/mypZvv98IIv4ClvOIJe7M6tSg8IF+XOfnP/+2Rq1+57cH61zS6mR5DZH4cOKj1Fnfy7O9Ou7z8m8SW9SE8neBKEAKv5rYKIQ0ifS07z0SNQ+vIFb7HR9avyNhmXg7mKqjbdMFenc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=S2xd7uEU; arc=none smtp.client-ip=192.198.163.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="S2xd7uEU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1790375639; x=1821911639; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=glUuKZKx5cqmlLMf4KB/vt8XRQXqy6FVeihuH84SKGQ=; b=S2xd7uEUU6wop8zfoRzL1su8jv3ee5MW7VJUw9uEymNqFbh6xocmnWYB RhngZGvcFRZZSwwaYOJ946mowTe/kinAC0Tb1kEm4JWgYZf64ALnxa3+D psWO7zhQ3tKnCpoCSgojCEwFbrq7anhnYho4yITLKlG+Z3+WJvuedOpc/ xvk9MDmgtRuq1QVLnqIHButmVY5wT/R+DXscVYgWz/KqevhrAdmY0PD1W xrhNAcPFCNd1F1Eah3LJEOY3Vyn0R0Fh2jViw47N3L45mFU/6UrgKD1mp QS4uG2UN8FYKKobvnGfjOG6zCM3DT50y/QekbI7KkYAAlRmHisztswIp7 w==; X-CSE-ConnectionGUID: OsVGUB3eTNebHdlAzBOBfA== X-CSE-MsgGUID: nnkG7F4ISPSbYSQNxEiM0A== X-IronPort-AV: E=McAfee;i="6800,10657,11916"; a="90071979" X-IronPort-AV: E=Sophos;i="6.27,123,1787036400"; d="scan'208";a="90071979" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2026 15:33:58 -0700 X-CSE-ConnectionGUID: sb/G1GFnRDaZ59yprzIAoQ== X-CSE-MsgGUID: ohN2STdoQ9+JR583vsyCXg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,123,1787036400"; d="scan'208";a="273053379" Received: from gklab-003-001.igk.intel.com ([10.91.173.48]) by fmviesa006.fm.intel.com with ESMTP; 25 Sep 2026 15:33:55 -0700 From: Grzegorz Nitka To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, richardcochran@gmail.com, andrew+netdev@lunn.ch, przemyslaw.kitszel@intel.com, anthony.l.nguyen@intel.com, arkadiusz.kubalewski@intel.com, davem@davemloft.net, edumazet@google.com, Grzegorz Nitka Subject: [PATCH iwl-net 0/2] ice: fix E825 PTP timer race and drop redundant cross-timestamp access Date: Sat, 26 Sep 2026 00:28:22 +0200 Message-Id: <20260925222824.270640-1-grzegorz.nitka@intel.com> X-Mailer: git-send-email 2.39.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series fixes a race in the E825 PHY timer start path and removes a redundant cross-timestamp command programming sequence. The first patch serializes the E825 PHY timer start sequence with the PTP lock and keeps the shared GLTSYN_CMD register access and incval programming within the same critical section. This prevents concurrent PTP updates from clobbering the source timer command and leaving the E825 PHY clock offset from the PHC. The second patch removes the redundant cross-timestamp programming of GLTSYN_CMD in the capture path. The register accesses were mistakenly assumed to be required for E823-class devices. In fact, it was the E824-family (not supported by this driver) not E823. Grzegorz Nitka (1): ice: remove redundant cross-timestamp PTP command Maciek Machnikowski (1): ice: ptp: serialize E825 PHY timer start with PTP lock and incval drivers/net/ethernet/intel/ice/ice_ptp.c | 6 --- drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 48 +++++++++------------ 2 files changed, 21 insertions(+), 33 deletions(-) base-commit: 349099e5d8082ab01e60d91fba9d107591c17371 -- 2.39.3