From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: [PATCH v2 net-next 8/8] net: dsa: mv88e6xxx: Longer timeout for PTP TX timestamp Date: Wed, 18 Jul 2018 22:38:27 +0200 Message-ID: <1531946307-22752-9-git-send-email-andrew@lunn.ch> References: <1531946307-22752-1-git-send-email-andrew@lunn.ch> Cc: richardcochran@gmail.com, Vivien Didelot , netdev , Andrew Lunn To: David Miller Return-path: Received: from vps0.lunn.ch ([185.16.172.187]:39082 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730397AbeGRVUX (ORCPT ); Wed, 18 Jul 2018 17:20:23 -0400 In-Reply-To: <1531946307-22752-1-git-send-email-andrew@lunn.ch> Sender: netdev-owner@vger.kernel.org List-ID: For slow processors using bit-banging MDIO, 20ms can be too short a timeout when waiting for the transmit timestamp to become available. Double it to 40ms. Signed-off-by: Andrew Lunn Acked-by: Richard Cochran --- drivers/net/dsa/mv88e6xxx/hwtstamp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/dsa/mv88e6xxx/hwtstamp.c b/drivers/net/dsa/mv88e6xxx/hwtstamp.c index ac71910c63c0..a17c16a2ab78 100644 --- a/drivers/net/dsa/mv88e6xxx/hwtstamp.c +++ b/drivers/net/dsa/mv88e6xxx/hwtstamp.c @@ -65,7 +65,7 @@ static int mv88e6xxx_ptp_read(struct mv88e6xxx_chip *chip, int addr, * within 1ms. Software may enounter delays due to MDIO contention, so * the timeout is set accordingly. */ -#define TX_TSTAMP_TIMEOUT msecs_to_jiffies(20) +#define TX_TSTAMP_TIMEOUT msecs_to_jiffies(40) int mv88e6xxx_get_ts_info(struct dsa_switch *ds, int port, struct ethtool_ts_info *info) -- 2.18.0