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

diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c
index 2d9ec37..88e4f3f 100644 (file)
--- 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));