/* * Copyright (C) 2009 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef __BTRFS_FREE_SPACE_CACHE #define __BTRFS_FREE_SPACE_CACHE struct btrfs_free_space { struct rb_node offset_index; u64 offset; u64 bytes; u64 max_extent_size; unsigned long *bitmap; struct list_head list; }; struct btrfs_free_space_ctl { spinlock_t tree_lock; struct rb_root free_space_offset; u64 free_space; int extents_thresh; int free_extents; int total_bitmaps; int unit; u64 start; const struct btrfs_free_space_op *op; void *private; struct mutex cache_writeout_mutex; struct list_head trimming_ranges; }; struct btrfs_free_space_op { void (*recalc_thresholds)(struct btrfs_free_space_ctl *ctl); bool (*use_bitmap)(struct btrfs_free_space_ctl *ctl, struct btrfs_free_space *info); }; struct btrfs_io_ctl; struct inode *lookup_free_space_inode(struct btrfs_root *root, struct btrfs_block_group_cache *block_group, struct btrfs_path *path); int create_free_space_inode(struct btrfs_root *root, struct btrfs_trans_handle *trans, struct btrfs_block_group_cache *block_group, struct btrfs_path *path); int btrfs_check_trunc_cache_free_space(struct btrfs_fs_info *fs_info, struct btrfs_block_rsv *rsv); int btrfs_truncate_free_space_cache(struct btrfs_root *root, struct btrfs_trans_handle *trans, struct btrfs_block_group_cache *block_group, struct inode *inode); int load_free_space_cache(struct btrfs_fs_info *fs_info, struct btrfs_block_group_cache *block_group); int btrfs_wait_cache_io(struct btrfs_trans_handle *trans, struct btrfs_block_group_cache *block_group, struct btrfs_path *path); int btrfs_write_out_cache(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, struct btrfs_block_group_cache *block_group, struct btrfs_path *path); struct inode *lookup_free_ino_inode(struct btrfs_root *root, struct btrfs_path *path); int create_free_ino_inode(struct btrfs_root *root, struct btrfs_trans_handle *trans, struct btrfs_path *path); int load_free_ino_cache(struct btrfs_fs_info *fs_info, struct btrfs_root *root); int btrfs_write_out_ino_cache(struct btrfs_root *root, struct btrfs_trans_handle *trans, struct btrfs_path *path, struct inode *inode); void btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group); int __btrfs_add_free_space(struct btrfs_fs_info *fs_info, struct btrfs_free_space_ctl *ctl, u64 bytenr, u64 size); static inline int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, u64 bytenr, u64 size) { return __btrfs_add_free_space(block_group->fs_info, block_group->free_space_ctl, bytenr, size); } int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, u64 bytenr, u64 size); void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl); void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group); u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group, u64 offset, u64 bytes, u64 empty_size, u64 *max_extent_size); u64 btrfs_find_ino_for_alloc(struct btrfs_root *fs_root); void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, u64 bytes); int btrfs_find_space_cluster(struct btrfs_fs_info *fs_info, struct btrfs_block_group_cache *block_group, struct btrfs_free_cluster *cluster, u64 offset, u64 bytes, u64 empty_size); void btrfs_init_free_cluster(struct btrfs_free_cluster *cluster); u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group, struct btrfs_free_cluster *cluster, u64 bytes, u64 min_start, u64 *max_extent_size); int btrfs_return_cluster_to_free_space( struct btrfs_block_group_cache *block_group, struct btrfs_free_cluster *cluster); int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group, u64 *trimmed, u64 start, u64 end, u64 minlen); /* Support functions for running our sanity tests */ #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS int test_add_free_space_entry(struct btrfs_block_group_cache *cache, u64 offset, u64 bytes, bool bitmap); int test_check_exists(struct btrfs_block_group_cache *cache, u64 offset, u64 bytes); #endif #endif committerMark Brown <broonie@kernel.org>2016-11-11 15:38:08 +0000 commit09f2ba0b0b7c44ecea49cf69a708203b76ba5535 (patch) tree042df33ac99f77d8b86ac427431e267c33561c35 /include/dt-bindings/clock/r8a7796-cpg-mssr.h parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: gpio: properly check return value of of_get_named_gpio
The function of_get_named_gpio() could return -ENOENT, -EPROBE_DEFER -EINVAL and so on. Currently, for the optional property "enable-gpio", we only check -EPROBE_DEFER, this is not enough since there may be misconfigured "enable-gpio" in the DTB, of_get_named_gpio() will return -EINVAL in this case, we should return immediately here. And for the optional property "gpios", we didn't check the return value, the driver will continue to the point where gpio_request_array() is called, it doesn't make sense to continue if we got -EPROBE_DEFER or -EINVAL here. This patch tries to address these two issues by properly checking the return value of of_get_named_gpio. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/dt-bindings/clock/r8a7796-cpg-mssr.h')