diff options
Diffstat (limited to 'drivers/mtd/ubi')
| -rw-r--r-- | drivers/mtd/ubi/debug.c | 12 | ||||
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 17 |
2 files changed, 23 insertions, 6 deletions
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c index 9f957c2d48e9..7c1380305219 100644 --- a/drivers/mtd/ubi/debug.c +++ b/drivers/mtd/ubi/debug.c @@ -264,6 +264,9 @@ static struct dentry *dfs_rootdir; */ int ubi_debugfs_init(void) { + if (!IS_ENABLED(CONFIG_DEBUG_FS)) + return 0; + dfs_rootdir = debugfs_create_dir("ubi", NULL); if (IS_ERR_OR_NULL(dfs_rootdir)) { int err = dfs_rootdir ? -ENODEV : PTR_ERR(dfs_rootdir); @@ -281,7 +284,8 @@ int ubi_debugfs_init(void) */ void ubi_debugfs_exit(void) { - debugfs_remove(dfs_rootdir); + if (IS_ENABLED(CONFIG_DEBUG_FS)) + debugfs_remove(dfs_rootdir); } /* Read an UBI debugfs file */ @@ -403,6 +407,9 @@ int ubi_debugfs_init_dev(struct ubi_device *ubi) struct dentry *dent; struct ubi_debug_info *d = ubi->dbg; + if (!IS_ENABLED(CONFIG_DEBUG_FS)) + return 0; + n = snprintf(d->dfs_dir_name, UBI_DFS_DIR_LEN + 1, UBI_DFS_DIR_NAME, ubi->ubi_num); if (n == UBI_DFS_DIR_LEN) { @@ -470,5 +477,6 @@ out: */ void ubi_debugfs_exit_dev(struct ubi_device *ubi) { - debugfs_remove_recursive(ubi->dbg->dfs_dir); + if (IS_ENABLED(CONFIG_DEBUG_FS)) + debugfs_remove_recursive(ubi->dbg->dfs_dir); } diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 9df100a4ec38..b6be644e7b85 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -1262,11 +1262,11 @@ int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum) dbg_wl("flush pending work for LEB %d:%d (%d pending works)", vol_id, lnum, ubi->works_count); - down_write(&ubi->work_sem); while (found) { struct ubi_work *wrk; found = 0; + down_read(&ubi->work_sem); spin_lock(&ubi->wl_lock); list_for_each_entry(wrk, &ubi->works, list) { if ((vol_id == UBI_ALL || wrk->vol_id == vol_id) && @@ -1277,18 +1277,27 @@ int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum) spin_unlock(&ubi->wl_lock); err = wrk->func(ubi, wrk, 0); - if (err) - goto out; + if (err) { + up_read(&ubi->work_sem); + return err; + } + spin_lock(&ubi->wl_lock); found = 1; break; } } spin_unlock(&ubi->wl_lock); + up_read(&ubi->work_sem); } -out: + /* + * Make sure all the works which have been done in parallel are + * finished. + */ + down_write(&ubi->work_sem); up_write(&ubi->work_sem); + return err; } |