diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2019-07-21 18:50:08 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-21 11:51:50 -0700 |
| commit | 0cea0e1148fe134a4a3aaf0b1496f09241fb943a (patch) | |
| tree | 7afeb1162301bd9cd936c27f6f75ae92f23625ae | |
| parent | 503d81d428bd598430f7f9d02021634e1a8139a0 (diff) | |
| download | linux-0cea0e1148fe134a4a3aaf0b1496f09241fb943a.tar.bz2 | |
net: phy: sfp: hwmon: Fix scaling of RX power
The RX power read from the SFP uses units of 0.1uW. This must be
scaled to units of uW for HWMON. This requires a divide by 10, not the
current 100.
With this change in place, sensors(1) and ethtool -m agree:
sff2-isa-0000
Adapter: ISA adapter
in0: +3.23 V
temp1: +33.1 C
power1: 270.00 uW
power2: 200.00 uW
curr1: +0.01 A
Laser output power : 0.2743 mW / -5.62 dBm
Receiver signal average optical power : 0.2014 mW / -6.96 dBm
Reported-by: chris.healy@zii.aero
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 1323061a018a ("net: phy: sfp: Add HWMON support for module sensors")
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/sfp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index 2d816aadea79..e36c04c26866 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -517,7 +517,7 @@ static int sfp_hwmon_read_sensor(struct sfp *sfp, int reg, long *value) static void sfp_hwmon_to_rx_power(long *value) { - *value = DIV_ROUND_CLOSEST(*value, 100); + *value = DIV_ROUND_CLOSEST(*value, 10); } static void sfp_hwmon_calibrate(struct sfp *sfp, unsigned int slope, int offset, |