[tip:ras/core] RAS/CEC: Increment cec_entered under the mutex lock

[tip-bot for WANG Chao <tipbot@zytor.com>]

Commit-ID:  06e0fe2d8e9178bda874a75083bc13647fbf983f
Gitweb:     https://git.kernel.org/tip/06e0fe2d8e9178bda874a75083bc13647fbf983f
Author:     WANG Chao <chao.wang () ucloud ! cn>
AuthorDate: Thu, 18 Apr 2019 03:41:14 +0000
Committer:  Borislav Petkov <bp@suse.de>
CommitDate: Sat, 20 Apr 2019 12:13:13 +0200

RAS/CEC: Increment cec_entered under the mutex lock

Modify ->cec_entered in the critical section of the mutex.

Signed-off-by: WANG Chao <chao.wang@ucloud.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: https://lkml.kernel.org/r/20190418034115.75954-2-chao.wang@ucloud.cn
---
 drivers/ras/cec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c
index 2d9ec378a8bc..88e4f3ff0cb8 100644
--- a/drivers/ras/cec.c
+++ b/drivers/ras/cec.c
@@ -286,10 +286,10 @@ int cec_add_elem(u64 pfn)
 	if (!ce_arr.array || ce_arr.disabled)
 		return -ENODEV;
 
-	ca->ces_entered++;
-
 	mutex_lock(&ce_mutex);
 
+	ca->ces_entered++;
+
 	if (ca->n == MAX_ELEMS)
 		WARN_ON(!del_lru_elem_unlocked(ca));