The debugfs_create_dir() function may fail and return error. If the root directory not created, we can't create anything inside it. This patch adds check for this case.
Signed-off-by: Alexander Kuleshov <[email protected]> --- mm/cma_debug.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/cma_debug.c b/mm/cma_debug.c index f8e4b60..bfb46e2 100644 --- a/mm/cma_debug.c +++ b/mm/cma_debug.c @@ -171,6 +171,9 @@ static void cma_debugfs_add_one(struct cma *cma, int idx) tmp = debugfs_create_dir(name, cma_debugfs_root); + if (!tmp) + return; + debugfs_create_file("alloc", S_IWUSR, tmp, cma, &cma_alloc_fops); -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
