linux-kernel - [PATCH 4.4 053/159] power: supply: ab8500_fg: silence uninitialized variable warnings

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Message-Id: <20191122100745.696798321@linuxfoundation.org>
Date:   Fri, 22 Nov 2019 11:27:24 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 053/159] power: supply: ab8500_fg: silence uninitialized variable warnings

From: Dan Carpenter <dan.carpenter@...cle.com>

[ Upstream commit 54baff8d4e5dce2cef61953b1dc22079cda1ddb1 ]

If kstrtoul() fails then we print "charge_full" when it's uninitialized.
The debug printk doesn't add anything so I deleted it and cleaned these
two functions up a bit.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/power/ab8500_fg.c | 31 ++++++++++++-------------------
 1 file changed, 12 insertions(+), 19 deletions(-)

diff --git a/drivers/power/ab8500_fg.c b/drivers/power/ab8500_fg.c
index 3830dade5d69d..d91111200dde2 100644
--- a/drivers/power/ab8500_fg.c
+++ b/drivers/power/ab8500_fg.c
@@ -2447,17 +2447,14 @@ static ssize_t charge_full_store(struct ab8500_fg *di, const char *buf,
 				 size_t count)
 {
 	unsigned long charge_full;
-	ssize_t ret;
+	int ret;
 
 	ret = kstrtoul(buf, 10, &charge_full);
+	if (ret)
+		return ret;
 
-	dev_dbg(di->dev, "Ret %zd charge_full %lu", ret, charge_full);
-
-	if (!ret) {
-		di->bat_cap.max_mah = (int) charge_full;
-		ret = count;
-	}
-	return ret;
+	di->bat_cap.max_mah = (int) charge_full;
+	return count;
 }
 
 static ssize_t charge_now_show(struct ab8500_fg *di, char *buf)
@@ -2469,20 +2466,16 @@ static ssize_t charge_now_store(struct ab8500_fg *di, const char *buf,
 				 size_t count)
 {
 	unsigned long charge_now;
-	ssize_t ret;
+	int ret;
 
 	ret = kstrtoul(buf, 10, &charge_now);
+	if (ret)
+		return ret;
 
-	dev_dbg(di->dev, "Ret %zd charge_now %lu was %d",
-		ret, charge_now, di->bat_cap.prev_mah);
-
-	if (!ret) {
-		di->bat_cap.user_mah = (int) charge_now;
-		di->flags.user_cap = true;
-		ret = count;
-		queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
-	}
-	return ret;
+	di->bat_cap.user_mah = (int) charge_now;
+	di->flags.user_cap = true;
+	queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+	return count;
 }
 
 static struct ab8500_fg_sysfs_entry charge_full_attr =
-- 
2.20.1