From 64421c0b95f75c9756e295bfc88b0dea397920cb Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Wed, 18 Jul 2018 22:38:27 +0200 Subject: [PATCH] net: dsa: mv88e6xxx: Longer timeout for PTP TX timestamp 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 Signed-off-by: David S. Miller --- 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 ac71910c63c07..a17c16a2ab789 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) -- 2.39.5