[PATCH bpf] ftrace: fix incorrect hash size in register_ftrace_direct()

[Menglong Dong]

The max ftrace hash bits is made fls(32) in register_ftrace_direct(),
which seems illogical, and it seems to be a spelling mistake.

Just fix it.

(Do I misunderstand something?)

Fixes: d05cb470663a ("ftrace: Fix modification of direct_function hash while in 
use")
Signed-off-by: Menglong Dong <dong...@chinatelecom.cn>
---
 kernel/trace/ftrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 1a48aedb5255..7697605a41e6 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5914,7 +5914,7 @@ int register_ftrace_direct(struct ftrace_ops *ops, 
unsigned long addr)
 
        /* Make a copy hash to place the new and the old entries in */
        size = hash->count + direct_functions->count;
-       if (size > 32)
+       if (size < 32)
                size = 32;
        new_hash = alloc_ftrace_hash(fls(size));
        if (!new_hash)
-- 
2.39.5