[PATCH 2/2] UBIFS: fix debugfs-less systems support
Artem Bityutskiy
dedekind1 at gmail.com
Wed Jun 6 09:09:09 EDT 2012
From: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
Commit "f70b7e5 UBIFS: remove Kconfig debugging option" broke UBIFS 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.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
---
fs/ubifs/debug.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 685a837..84a7e6f 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2918,6 +2918,9 @@ int dbg_debugfs_init_fs(struct ubifs_info *c)
struct dentry *dent;
struct ubifs_debug_info *d = c->dbg;
+ if (!IS_ENABLED(DEBUG_FS))
+ return 0;
+
n = snprintf(d->dfs_dir_name, UBIFS_DFS_DIR_LEN + 1, UBIFS_DFS_DIR_NAME,
c->vi.ubi_num, c->vi.vol_id);
if (n == UBIFS_DFS_DIR_LEN) {
@@ -3010,7 +3013,8 @@ out:
*/
void dbg_debugfs_exit_fs(struct ubifs_info *c)
{
- debugfs_remove_recursive(c->dbg->dfs_dir);
+ if (IS_ENABLED(DEBUG_FS))
+ debugfs_remove_recursive(c->dbg->dfs_dir);
}
struct ubifs_global_debug_info ubifs_dbg;
@@ -3095,6 +3099,9 @@ int dbg_debugfs_init(void)
const char *fname;
struct dentry *dent;
+ if (!IS_ENABLED(DEBUG_FS))
+ return 0;
+
fname = "ubifs";
dent = debugfs_create_dir(fname, NULL);
if (IS_ERR_OR_NULL(dent))
@@ -3159,7 +3166,8 @@ out:
*/
void dbg_debugfs_exit(void)
{
- debugfs_remove_recursive(dfs_rootdir);
+ if (IS_ENABLED(DEBUG_FS))
+ debugfs_remove_recursive(dfs_rootdir);
}
/**
--
1.7.7.6
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