linux-kernel - [PATCH] nvmet: Use PTR_ERR_OR_ZERO() in nvmet_init

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Date:   Fri, 6 Sep 2019 20:00:46 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     linux-nvme@...ts.infradead.org, Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        YueHaibing <yuehaibing@...wei.com>,
        zhong jiang <zhongjiang@...wei.com>
Subject: [PATCH] nvmet: Use PTR_ERR_OR_ZERO() in nvmet_init_discovery()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 6 Sep 2019 19:50:19 +0200

Simplify this function implementation by using a known function.

Generated by: scripts/coccinelle/api/ptr_ret.cocci
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/nvme/target/discovery.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c
index 8efca26b4776..3764a8900850 100644
--- a/drivers/nvme/target/discovery.c
+++ b/drivers/nvme/target/discovery.c
@@ -381,9 +381,7 @@ int __init nvmet_init_discovery(void)
 {
 	nvmet_disc_subsys =
 		nvmet_subsys_alloc(NVME_DISC_SUBSYS_NAME, NVME_NQN_DISC);
-	if (IS_ERR(nvmet_disc_subsys))
-		return PTR_ERR(nvmet_disc_subsys);
-	return 0;
+	return PTR_ERR_OR_ZERO(nvmet_disc_subsys);
 }

 void nvmet_exit_discovery(void)
--
2.23.0