linux-kernel - [PATCH 01/28] lightnvm: fix "warning: ‘ret’ may be used uninitialized"

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Date:	Fri,  6 May 2016 20:02:54 +0200
From:	Matias Bjørling <m@...rling.me>
To:	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	axboe@...com
Cc:	Jeff Mahoney <jeffm@...e.com>,
	Matias Bjørling <m@...rling.me>
Subject: [PATCH 01/28] lightnvm: fix "warning: ‘ret’ may be used uninitialized"

From: Jeff Mahoney <jeffm@...e.com>

This fixes the following warnings:
drivers/lightnvm/sysblk.c:125:9: warning: ‘ret’ may be used
uninitialized in this function

drivers/lightnvm/sysblk.c:275:15: warning: ‘ret’ may be used
uninitialized in this function

In both cases, ret is only set from within a loop that may not be entered.

Signed-off-by: Jeff Mahoney <jeffm@...e.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>
Signed-off-by: Matias Bjørling <m@...rling.me>
---
 drivers/lightnvm/sysblk.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/lightnvm/sysblk.c b/drivers/lightnvm/sysblk.c
index 321de1f..b1e1404 100644
--- a/drivers/lightnvm/sysblk.c
+++ b/drivers/lightnvm/sysblk.c
@@ -122,7 +122,7 @@ static int nvm_get_all_sysblks(struct nvm_dev *dev, struct sysblk_scan *s,
 				struct ppa_addr *ppas, nvm_bb_update_fn *fn)
 {
 	struct ppa_addr dppa;
-	int i, ret;
+	int i, ret = 0;
 
 	s->nr_ppas = 0;
 
@@ -272,7 +272,7 @@ static int nvm_write_and_verify(struct nvm_dev *dev, struct nvm_sb_info *info,
 {
 	struct nvm_system_block nvmsb;
 	void *buf;
-	int i, sect, ret, bufsz;
+	int i, sect, ret = 0, bufsz;
 	struct ppa_addr *ppas;
 
 	nvm_cpu_to_sysblk(&nvmsb, info);
-- 
2.1.4