On Thu, Jul 14, 2016 at 06:51:35PM -0700, Andrey Pronin wrote: > - sysfs_remove_link(&chip->dev.parent->kobj, "ppi"); > - > - for (i = chip->groups[0]->attrs; *i != NULL; ++i) > - sysfs_remove_link(&chip->dev.parent->kobj, (*i)->name); > + for (ngrp = 0; ngrp < chip->groups_cnt; ++ngrp) { > + if (chip->groups[ngrp]->name) { > + sysfs_remove_link(&chip->dev.parent->kobj, > + chip->groups[ngrp]->name); > + } else { > + for (i = chip->groups[ngrp]->attrs; *i != NULL; ++i) > + sysfs_remove_link(&chip->dev.parent->kobj, > + (*i)->name); > + } > + }
NAK No new compat symlinks. Only the existing set of links are permitted. Any new sysfs entries must use only the new location. > +static struct attribute *tpm2_dev_attrs[] = { > NULL, > }; > +static const struct attribute_group tpm2_dev_group = { > + .attrs = tpm2_dev_attrs, > +}; Don't add dead code, add this and related in the patch that requires it. > void tpm_sysfs_add_device(struct tpm_chip *chip) > { > /* The sysfs routines rely on an implicit tpm_try_get_ops, device_del > @@ -290,4 +306,8 @@ void tpm_sysfs_add_device(struct tpm_chip *chip) > */ > WARN_ON(chip->groups_cnt != 0); > chip->groups[chip->groups_cnt++] = &tpm_dev_group; > + if (chip->flags & TPM_CHIP_FLAG_TPM2) > + chip->groups[chip->groups_cnt++] = &tpm2_dev_group; > + else > + chip->groups[chip->groups_cnt++] = &tpm1_dev_group; .. and this can't really happen either.. To make things simple you can just have tpm2 not ever create any links for any files by never using groups[0]. There is no need to try and create a shared 'tpm_dev_group'. Jason