diff options
Diffstat (limited to 'drivers/net/phy/sfp.c')
| -rw-r--r-- | drivers/net/phy/sfp.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index 40c9a64c5e30..f7ad4d5d9041 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -1766,6 +1766,12 @@ static int sfp_module_parse_power(struct sfp *sfp) if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL)) power_mW = 2000; + /* Power level 1 modules (max. 1W) are always supported. */ + if (power_mW <= 1000) { + sfp->module_power_mW = power_mW; + return 0; + } + supports_a2 = sfp->id.ext.sff8472_compliance != SFP_SFF8472_COMPLIANCE_NONE || sfp->id.ext.diagmon & SFP_DIAGMON_DDM; @@ -1789,12 +1795,6 @@ static int sfp_module_parse_power(struct sfp *sfp) } } - if (power_mW <= 1000) { - /* Modules below 1W do not require a power change sequence */ - sfp->module_power_mW = power_mW; - return 0; - } - if (!supports_a2) { /* The module power level is below the host maximum and the * module appears not to implement bus address 0xa2, so assume @@ -2729,8 +2729,12 @@ static int sfp_probe(struct platform_device *pdev) device_property_read_u32(&pdev->dev, "maximum-power-milliwatt", &sfp->max_power_mW); - if (!sfp->max_power_mW) + if (sfp->max_power_mW < 1000) { + if (sfp->max_power_mW) + dev_warn(sfp->dev, + "Firmware bug: host maximum power should be at least 1W\n"); sfp->max_power_mW = 1000; + } dev_info(sfp->dev, "Host maximum power %u.%uW\n", sfp->max_power_mW / 1000, (sfp->max_power_mW / 100) % 10); |