The hwmon interface in the be2net driver causes a link error when be2net is built-in while the hwmon subsystem is a loadable module:
drivers/built-in.o: In function `be_probe': drivers/net/ethernet/emulex/benet/be_main.c:5761: undefined reference to `devm_hwmon_device_register_with_groups' This adds a new Kconfig symbol, following the example of multiple other drivers that have the same problem. The new CONFIG_BE2NET_HWMON will not be available when (BE2NET=y && HWMON=m) to avoid this problem. We have to also mark be_hwmon_show_temp as 'static' to ensure the compiler can optimize out all the unused code. Signed-off-by: Arnd Bergmann <[email protected]> Fixes: 29e9122b3a ("be2net: Export board temperature using hwmon-sysfs interface.") --- Found on ARM randconfig builds in linux-next diff --git a/drivers/net/ethernet/emulex/benet/Kconfig b/drivers/net/ethernet/emulex/benet/Kconfig index ea94a8eb6b35..7108563260ae 100644 --- a/drivers/net/ethernet/emulex/benet/Kconfig +++ b/drivers/net/ethernet/emulex/benet/Kconfig @@ -5,6 +5,15 @@ config BE2NET This driver implements the NIC functionality for ServerEngines' 10Gbps network adapter - BladeEngine. +config BE2NET_HWMON + bool "HWMON support for be2net driver" + depends on BE2NET && HWMON + depends on !(BE2NET=y && HWMON=m) + default y + ---help--- + Say Y here if you want to expose thermal sensor data on + be2net network adapter. + config BE2NET_VXLAN bool "VXLAN offload support on be2net driver" default y diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index dc7c0fd239f7..75696d4f9ed0 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5612,9 +5612,9 @@ static void be_remove(struct pci_dev *pdev) free_netdev(adapter->netdev); } -ssize_t be_hwmon_show_temp(struct device *dev, - struct device_attribute *dev_attr, - char *buf) +static ssize_t be_hwmon_show_temp(struct device *dev, + struct device_attribute *dev_attr, + char *buf) { struct be_adapter *adapter = dev_get_drvdata(dev); @@ -5756,7 +5756,7 @@ static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id) be_schedule_err_detection(adapter); /* On Die temperature not supported for VF. */ - if (be_physfn(adapter)) { + if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) { adapter->hwmon_info.hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, DRV_NAME, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
