From: zhong jiang <zhongjiang@huawei.com>
Date: Tue, 31 Jul 2018 16:13:14 +0000 (+0800)
Subject: block/bsg-lib: use PTR_ERR_OR_ZERO to simplify the flow path
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=4725549192c9633b6a3740bf23770cb758bee4a0;p=openwrt%2Fstaging%2Fblogic.git

block/bsg-lib: use PTR_ERR_OR_ZERO to simplify the flow path

Simplify the code by using the PTR_ERR_OR_ZERO, instead of the
open code. It is better.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index 9419def8c017..f3501cdaf1a6 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -48,9 +48,8 @@ static int bsg_transport_fill_hdr(struct request *rq, struct sg_io_v4 *hdr,
 
 	job->request_len = hdr->request_len;
 	job->request = memdup_user(uptr64(hdr->request), hdr->request_len);
-	if (IS_ERR(job->request))
-		return PTR_ERR(job->request);
-	return 0;
+
+	return PTR_ERR_OR_ZERO(job->request);
 }
 
 static int bsg_transport_complete_rq(struct request *rq, struct sg_io_v4 *hdr)