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 <and...@lunn.ch>
Acked-by: Richard Cochran <richardcoch...@gmail.com>
---
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
