From: zhong jiang <zhongjiang@huawei.com>
Date: Wed, 8 Aug 2018 15:00:35 +0000 (+0800)
Subject: drivers/block/aoe/aoedev: NULL check is not needed for mempool_destroy
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=69daf897d75b31ff90031bb0a49a8d65cedfe3ca;p=openwrt%2Fstaging%2Fblogic.git

drivers/block/aoe/aoedev: NULL check is not needed for mempool_destroy

mempool_destroy has taken the null pointer into account. So it is safe
to remove the null check.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index 697f735b07a4..41060e9cedf2 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -284,8 +284,8 @@ freedev(struct aoedev *d)
 	e = t + d->ntargets;
 	for (; t < e && *t; t++)
 		freetgt(d, *t);
-	if (d->bufpool)
-		mempool_destroy(d->bufpool);
+
+	mempool_destroy(d->bufpool);
 	skbpoolfree(d);
 	minor_free(d->sysminor);