If CONFIG_ENA_ETHERNET=y and CONFIG_DIMLIB=n, below erros can be found: drivers/net/ethernet/amazon/ena/ena_netdev.o: In function `ena_dim_work': ena_netdev.c:(.text+0x21cc): undefined reference to `net_dim_get_rx_moderation' ena_netdev.c:(.text+0x21cc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `net_dim_get_rx_moderation' drivers/net/ethernet/amazon/ena/ena_netdev.o: In function `ena_io_poll': ena_netdev.c:(.text+0x7bd4): undefined reference to `net_dim' ena_netdev.c:(.text+0x7bd4): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `net_dim' After commit 282faf61a053 ("net: ena: switch to dim algorithm for rx adaptive interrupt moderation"), it introduces dim algorithm, which configured by CONFIG_DIMLIB. Fixes: 282faf61a053 ("net: ena: switch to dim algorithm for rx adaptive interrupt moderation") Signed-off-by: Mao Wenan <maowenan@xxxxxxxxxx> --- drivers/net/ethernet/amazon/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/amazon/Kconfig b/drivers/net/ethernet/amazon/Kconfig index 69ca99d..fe46df4 100644 --- a/drivers/net/ethernet/amazon/Kconfig +++ b/drivers/net/ethernet/amazon/Kconfig @@ -18,7 +18,7 @@ if NET_VENDOR_AMAZON config ENA_ETHERNET tristate "Elastic Network Adapter (ENA) support" - depends on PCI_MSI && !CPU_BIG_ENDIAN + depends on PCI_MSI && !CPU_BIG_ENDIAN && DIMLIB ---help--- This driver supports Elastic Network Adapter (ENA)" -- 2.7.4