linux-kernel - [PATCH] dca: Use PTR_ERR_OR_ZERO() in dca_sysfs_add

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Date:   Fri, 6 Sep 2019 18:18:12 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     kernel-janitors@...r.kernel.org,
        Allison Randal <allison@...utok.net>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Richard Fontana <rfontana@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        zhong jiang <zhongjiang@...wei.com>
Subject: [PATCH] dca: Use PTR_ERR_OR_ZERO() in dca_sysfs_add_req()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 6 Sep 2019 18:05:21 +0200

Simplify this function implementation by using a known function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/dca/dca-sysfs.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/dca/dca-sysfs.c b/drivers/dca/dca-sysfs.c
index eb25627b059d..21ebd0af268b 100644
--- a/drivers/dca/dca-sysfs.c
+++ b/drivers/dca/dca-sysfs.c
@@ -24,9 +24,7 @@ int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot)

 	cd = device_create(dca_class, dca->cd, MKDEV(0, slot + 1), NULL,
 			   "requester%d", req_count++);
-	if (IS_ERR(cd))
-		return PTR_ERR(cd);
-	return 0;
+	return PTR_ERR_OR_ZERO(cd);
 }

 void dca_sysfs_remove_req(struct dca_provider *dca, int slot)
--
2.23.0