linux-kernel - [PATCH] kernel/resource: Remove unnecessary initial values of variables

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Message-Id: <20230926014548.31523-1-kunyu@nfschina.com>
Date:   Tue, 26 Sep 2023 09:45:48 +0800
From:   Li kunyu <kunyu@...china.com>
To:     gregkh@...uxfoundation.org, dan.j.williams@...el.com,
        pasha.tatashin@...een.com, andriy.shevchenko@...ux.intel.com,
        Jonathan.Cameron@...wei.com, ira.weiny@...el.com
Cc:     linux-kernel@...r.kernel.org, Li kunyu <kunyu@...china.com>
Subject: [PATCH] kernel/resource: Remove unnecessary initial values of variables

err, new_res and dr is assigned first, so it does not need to initialize
 the assignment.

Signed-off-by: Li kunyu <kunyu@...china.com>
---
 kernel/resource.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/resource.c b/kernel/resource.c
index b1763b2fd7ef..bbd7c113307a 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -656,7 +656,7 @@ static int reallocate_resource(struct resource *root, struct resource *old,
 			       resource_size_t newsize,
 			       struct resource_constraint *constraint)
 {
-	int err=0;
+	int err;
 	struct resource new = *old;
 	struct resource *conflict;
 
@@ -1310,7 +1310,7 @@ EXPORT_SYMBOL(__release_region);
 void release_mem_region_adjustable(resource_size_t start, resource_size_t size)
 {
 	struct resource *parent = &iomem_resource;
-	struct resource *new_res = NULL;
+	struct resource *new_res;
 	bool alloc_nofail = false;
 	struct resource **p;
 	struct resource *res;
@@ -1556,7 +1556,7 @@ struct resource *
 __devm_request_region(struct device *dev, struct resource *parent,
 		      resource_size_t start, resource_size_t n, const char *name)
 {
-	struct region_devres *dr = NULL;
+	struct region_devres *dr;
 	struct resource *res;
 
 	dr = devres_alloc(devm_region_release, sizeof(struct region_devres),
-- 
2.18.2