linux-kernel - [PATCH v3 09/10] x86/mce/amd: Remove unnecessary NULL pointer initializations

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Message-Id: <20241025024602.24318-10-qiuxu.zhuo@intel.com>
Date: Fri, 25 Oct 2024 10:46:01 +0800
From: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
To: bp@...en8.de,
	tony.luck@...el.com
Cc: tglx@...utronix.de,
	dave.hansen@...ux.intel.com,
	mingo@...hat.com,
	hpa@...or.com,
	x86@...nel.org,
	linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	qiuxu.zhuo@...el.com
Subject: [PATCH v3 09/10] x86/mce/amd: Remove unnecessary NULL pointer initializations

Remove unnecessary NULL pointer initializations from variables that
are already initialized before use.

Reviewed-by: Nikolay Borisov <nik.borisov@...e.com>
Reviewed-by: Sohil Mehta <sohil.mehta@...el.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
---
Changes in v3:
 - Collect "Reviewed-by:" Nikolay & Sohil.
 - Remove the variables' names from the commit message (Sohil).

 arch/x86/kernel/cpu/mce/amd.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
index 4dae9841ee38..aecea842dac2 100644
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -917,8 +917,8 @@ static void log_and_reset_block(struct threshold_block *block)
  */
 static void amd_threshold_interrupt(void)
 {
-	struct threshold_block *first_block = NULL, *block = NULL, *tmp = NULL;
 	struct threshold_bank **bp = this_cpu_read(threshold_banks);
+	struct threshold_block *first_block, *block, *tmp;
 	unsigned int bank, cpu = smp_processor_id();
 
 	/*
@@ -1197,8 +1197,7 @@ static int allocate_threshold_blocks(unsigned int cpu, struct threshold_bank *tb
 static int __threshold_add_blocks(struct threshold_bank *b)
 {
 	struct list_head *head = &b->blocks->miscj;
-	struct threshold_block *pos = NULL;
-	struct threshold_block *tmp = NULL;
+	struct threshold_block *pos, *tmp;
 	int err = 0;
 
 	err = kobject_add(&b->blocks->kobj, b->kobj, b->blocks->kobj.name);
@@ -1308,8 +1307,7 @@ static void deallocate_threshold_blocks(struct threshold_bank *bank)
 
 static void __threshold_remove_blocks(struct threshold_bank *b)
 {
-	struct threshold_block *pos = NULL;
-	struct threshold_block *tmp = NULL;
+	struct threshold_block *pos, *tmp;
 
 	kobject_put(b->kobj);
 
-- 
2.17.1