| Message ID | 20180517143254.48670-1-colyli@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, May 17, 2018 at 10:32:54PM +0800, Coly Li wrote: > Commit 539d39eb2708 ("bcache: fix wrong return value in bch_debug_init()") > returns the return value of debugfs_create_dir() to bcache_init(). When > CONFIG_DEBUG_FS=n, bch_debug_init() always returns 1 and makes > bcache_init() failedi. > > This patch makes bch_debug_init() always returns 0 if CONFIG_DEBUG_FS=n, > so bcache can continue to work for the kernels which don't have debugfs > enanbled. > > Fixes: Commit 539d39eb2708 ("bcache: fix wrong return value in bch_debug_init()") > Cc: stable@vger.kernel.org > Signed-off-by: Coly Li <colyli@suse.de> > Reported-by: Massimo B. <massimo.b@gmx.net> > Reported-by: Kai Krakow <kai@kaishome.de> > Tested-by: Kai Krakow <kai@kaishome.de> > Cc: Kent Overstreet <kent.overstreet@gmail.com> Acked-by: Kent Overstreet <kent.overstreet@gmail.com>
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c index 4e63c6f6c04d..d030ce3025a6 100644 --- a/drivers/md/bcache/debug.c +++ b/drivers/md/bcache/debug.c @@ -250,7 +250,9 @@ void bch_debug_exit(void) int __init bch_debug_init(struct kobject *kobj) { - bcache_debug = debugfs_create_dir("bcache", NULL); + if (!IS_ENABLED(CONFIG_DEBUG_FS)) + return 0; + bcache_debug = debugfs_create_dir("bcache", NULL); return IS_ERR_OR_NULL(bcache_debug); }
Commit 539d39eb2708 ("bcache: fix wrong return value in bch_debug_init()") returns the return value of debugfs_create_dir() to bcache_init(). When CONFIG_DEBUG_FS=n, bch_debug_init() always returns 1 and makes bcache_init() failedi. This patch makes bch_debug_init() always returns 0 if CONFIG_DEBUG_FS=n, so bcache can continue to work for the kernels which don't have debugfs enanbled. Fixes: Commit 539d39eb2708 ("bcache: fix wrong return value in bch_debug_init()") Cc: stable@vger.kernel.org Signed-off-by: Coly Li <colyli@suse.de> Reported-by: Massimo B. <massimo.b@gmx.net> Reported-by: Kai Krakow <kai@kaishome.de> Tested-by: Kai Krakow <kai@kaishome.de> Cc: Kent Overstreet <kent.overstreet@gmail.com> --- drivers/md/bcache/debug.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)