From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8DD516FA0 for ; Mon, 16 Jan 2023 16:36:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1260FC433EF; Mon, 16 Jan 2023 16:36:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1673887000; bh=a3N2ndFfZbue4zlADQiYKdNJ6g9/maI2tOJxC2YTy34=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XzXYddW7qOQTN3oL9Ml8FziqWzXobuPB3/bxUQcmxLs9IzUCtVjhz21OCujkilnND u+ghBMFEwboCrQnJt9/2/Pr9a2eut3zTazhb+muJz24bEXXElDHyYuz0SDAIp7SvJM A27USsRdYW0rwNk9d08xYHocRqujIE+n7XyQxqmI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Rahul Rameshbabu , Gal Pressman , Tariq Toukan , Saeed Mahameed , Sasha Levin Subject: [PATCH 5.4 641/658] net/mlx5: Fix ptp max frequency adjustment range Date: Mon, 16 Jan 2023 16:52:09 +0100 Message-Id: <20230116154938.813488383@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230116154909.645460653@linuxfoundation.org> References: <20230116154909.645460653@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Rahul Rameshbabu [ Upstream commit fe91d57277eef8bb4aca05acfa337b4a51d0bba4 ] .max_adj of ptp_clock_info acts as an absolute value for the amount in ppb that can be set for a single call of .adjfine. This means that a single call to .getfine cannot be greater than .max_adj or less than -(.max_adj). Provides correct value for max frequency adjustment value supported by devices. Fixes: 3d8c38af1493 ("net/mlx5e: Add PTP Hardware Clock (PHC) support") Signed-off-by: Rahul Rameshbabu Reviewed-by: Gal Pressman Reviewed-by: Tariq Toukan Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c index e0b361ff5a97..2c81ec31e0a2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c @@ -418,7 +418,7 @@ static int mlx5_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin, static const struct ptp_clock_info mlx5_ptp_clock_info = { .owner = THIS_MODULE, .name = "mlx5_ptp", - .max_adj = 100000000, + .max_adj = 50000000, .n_alarm = 0, .n_ext_ts = 0, .n_per_out = 0, -- 2.35.1