Hello, Currently, to verify if kset_create_and_add() is succeed or not, almost all subsystems with sysfs support are check up the return value against NULL, then return -ENOMEM on failure, since kset_create_and_add() always return NULL in case of anything wrong. However, kset_register() can fail due to other reasons, hence it's better to return the actual error on kset_create_and_add(), this patch series is just did that and this is inspired by Christoph in another thread: http://www.spinics.net/lists/linux-mm/msg74729.html
Jeff Liu (24) kobject: return actual error on kset_create_and_add sample/kobject: update kset-example code slub: return actual error on sysfs_slab_add powerpc: check/return acutal error on sysfs init s390: check/return actual error on sysfs init crypt: return actual error code on pcrypt_init kernel: return actual error on param_sysfs_init drivers/firmware: return actual error on sysfs init drivers/iommu: check actual error on iommu_init drivers/base: return actual error on sysfs init drviers/scsi: check sysfs init return value via IS_ERR at iscsi_boot_create_kset drivers/parisc: return actual error on pdc_stable_init drivers/pci: return actual error on pci_slot_init drivers/s390: return actual error on sysfs init functions drivers/of: return actual error on of_init btrfs: return actual error on btrfs_init_sysfs gfs2: return actual error on gfs2_sys_init exofs: return actual error on exofs_sysfs_odev_add fs/dlm: return actual error on dlm_lockspace_init ext4: return actual error on ext4_init_fs f2fs: return actual error on init_f2fs_fs ocfs2: return actual error on sysfs init net: return actual error on register_queue_kobjects security/smack: return acutal error on smk_init_sysfs Cheers, -Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
