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| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-06-06 15:22:41 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-06-07 10:43:54 +0300 |
| commit | e9b4cf2094a65a05a831f070e46c554260632330 (patch) | |
| tree | 51a8a420ba19dfe1a9abfaa4d3cf109a8c4e199f | |
| parent | f8f5701bdaf9134b1f90e5044a82c66324d2073f (diff) | |
| download | linux-e9b4cf2094a65a05a831f070e46c554260632330.tar.gz linux-e9b4cf2094a65a05a831f070e46c554260632330.tar.xz linux-e9b4cf2094a65a05a831f070e46c554260632330.zip | |
UBI: fix debugfs-less systems support
Commit "aa44d1d UBI: remove Kconfig debugging option" broke UBI and it
refuses to initialize if debugfs (CONFIG_DEBUG_FS) is disabled. I incorrectly
assumed that debugfs files creation function will return success if debugfs
is disabled, but they actually return -ENODEV. This patch fixes the issue.
Reported-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com>
| -rw-r--r-- | drivers/mtd/ubi/debug.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c index 9f957c2d48e9..09d4f8d9d592 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(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(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(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(DEBUG_FS)) + debugfs_remove_recursive(ubi->dbg->dfs_dir); } |