From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-139.mta0.migadu.com [91.218.175.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D98B342532 for ; Wed, 7 Oct 2026 20:39:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.139 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791405544; cv=none; b=ePeECQjmBXM361u1pJY5fxha6XgDW891BY/0Cv1Lk1b+f+a/UWtX+BuwFhNjO+t+z5AWE7jqwG/lekkhDIOzRpTJpizhXYzzC42M4W558rX3OQFiLCE2sYmlPAB4uGqbCZOThCQVrO45Vxs1GzEsrgt597/eXPHnE0izkA3iWpI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791405544; c=relaxed/simple; bh=kg08YrKIRvZJ4Umaa9T0oc9c5TJ0cVuh5vuc+gdbkGY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=aMlI21z4t1X0KYJLs0dlvvZ4nMo/PFaHe0+hW4cDNaJu2vKFM0IiCy+pO9lD4dA2SZEeSf8jMaGZIGpbqQU62/1pFVfX6k3+FhQ+YwE/GEa0NS67o3d5VaY0Ka56skEYyEVs/hLx25ewIj7zig1xb4qksOAwCIqbyaaNLNFV6nc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=QGyvHxj+; arc=none smtp.client-ip=91.218.175.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="QGyvHxj+" X-Envelope-To: netdev@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=kg08YrKIRvZJ4Umaa9T0oc9c5TJ0cVuh5vuc+gdbkGY=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1791405539; v=1; x=1792010339; b=QGyvHxj+MHT0iRKi85+/tKsz3aQlsOaOXrDjUfJYo5VQ7I7G0PcIHFrE+JHRSMCwZyYrvkPG 719vKH0DkxlSk97NzxCwEaiyv0wkofenJysxc+ZQg7UMZtF+u8o8YNkVRilqa7Q745qiVzvK3Tb F4cKuKVW4goTHbNecv4pqaqI= X-Envelope-To: netdev@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id d5a943d16b077be6; Wed, 07 Oct 2026 20:38:59 +0000 X-Mizu-Trace-ID: d5a943d16b077be6 X-Migadu-Flow: FLOW_OUT From: Vadim Fedorenko To: Richard Cochran , Andrew Lunn , "David S. Miller" , Jakub Kicinski Cc: Eric Dumazet , Paolo Abeni , netdev@vger.kernel.org, Vadim Fedorenko Subject: [PATCH net] ptp: ocp: fix PCIe delay estimation calculation Date: Wed, 7 Oct 2026 20:33:59 +0000 Message-ID: <20261007203359.417270-1-vadim.fedorenko@linux.dev> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The commit in fixes introduced a high cap for delayas U64_MAX value while ktime_t is actually s64. This is wrong cap as it becomes negative value and any comparison to a real delay will fail to update delay value. Use KTIME_MAX constant as correct max cap for PCIe delay. Fixes: aa05fe67bcd64 ("ptp: ocp: Improve PCIe delay estimation") Signed-off-by: Vadim Fedorenko --- drivers/ptp/ptp_ocp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c index 3d26ec1f7b9e..a8cba2f64b98 100644 --- a/drivers/ptp/ptp_ocp.c +++ b/drivers/ptp/ptp_ocp.c @@ -1825,7 +1825,7 @@ ptp_ocp_watchdog(struct timer_list *t) static void ptp_ocp_estimate_pci_timing(struct ptp_ocp *bp) { - ktime_t start, end, delay = U64_MAX; + ktime_t start, end, delay = KTIME_MAX; u32 ctrl; int i; -- 2.47.3