On 05.09.25 16:54, Alexandra Winter wrote: > diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c > index a7a965e3c0ce..d90e11e1a945 100644 > --- a/net/smc/smc_ism.c > +++ b/net/smc/smc_ism.c [..] > > -static void smcd_register_dev(struct ism_dev *ism) > +static void smcd_register_dev(struct dibs_dev *dibs) > { > - const struct smcd_ops *ops = ism_get_smcd_ops(); > struct smcd_dev *smcd, *fentry; > + const struct smcd_ops *ops; > + struct smc_lo_dev *smc_lo; > + struct ism_dev *ism; > > - if (!ops) > - return; > + if (smc_ism_is_loopback(dibs)) { > + if (smc_loopback_init(&smc_lo)) > + return; > + } > > - smcd = smcd_alloc_dev(&ism->pdev->dev, dev_name(&ism->pdev->dev), ops, > - ISM_NR_DMBS); > + if (smc_ism_is_loopback(dibs)) { > + ops = smc_lo_get_smcd_ops(); > + smcd = smcd_alloc_dev(dev_name(&smc_lo->dev), ops, > + SMC_LO_MAX_DMBS); > + } else { > + ism = dibs->drv_priv; > + ops = ism_get_smcd_ops(); > + smcd = smcd_alloc_dev(dev_name(&ism->pdev->dev), ops, > + ISM_NR_DMBS); > + } Patchwork says: ERROR: modpost: "ism_get_smcd_ops" [net/smc/smc.ko] undefined! ARGH!! another transient compile error when CONFIG_ISM is not set! (whole series does compile, but not if you compile e.g. only up to this patch) I thought I had tested all combinations, sorry about that. I'll work on fixing it and on improving my script.