linux-kernel - [PATCH v1 1/1] nvdimm/namespace: return uuid_null only once in nd_dev_to

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Message-Id: <20220607152525.33468-1-andriy.shevchenko@linux.intel.com>
Date:   Tue,  7 Jun 2022 18:25:25 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Dan Williams <dan.j.williams@...el.com>, nvdimm@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Cc:     Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] nvdimm/namespace: return uuid_null only once in nd_dev_to_uuid()

Refactor nd_dev_to_uuid() in order to make code shorter and cleaner
by joining conditions and hence returning uuid_null only once.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/nvdimm/namespace_devs.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index bf4f5c09d9b1..3dae17c90e8c 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -170,15 +170,12 @@ EXPORT_SYMBOL(nvdimm_namespace_disk_name);
 
 const uuid_t *nd_dev_to_uuid(struct device *dev)
 {
-	if (!dev)
-		return &uuid_null;
-
-	if (is_namespace_pmem(dev)) {
+	if (dev && is_namespace_pmem(dev)) {
 		struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
 
 		return nspm->uuid;
-	} else
-		return &uuid_null;
+	}
+	return &uuid_null;
 }
 EXPORT_SYMBOL(nd_dev_to_uuid);
 
-- 
2.35.1