linux-kernel - [PATCH][next] rtc: rzn1: Fix uninitialized variable val

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Message-Id: <20220519100641.595608-1-colin.i.king@gmail.com>
Date:   Thu, 19 May 2022 11:06:41 +0100
From:   Colin Ian King <colin.i.king@...il.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Michel Pollet <michel.pollet@...renesas.com>,
        linux-rtc@...r.kernel.org, linux-renesas-soc@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] rtc: rzn1: Fix uninitialized variable val

Variable val is not being initialized and is later being read with
a potentially garbage value. Fix this by initializing val to zero.

Detected by clang scan build:
warning: variable 'val' is uninitialized when used here [-Wuninitialized]

Fixes: deeb4b5393e1 ("rtc: rzn1: Add new RTC driver")
Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/rtc/rtc-rzn1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c
index 980ade8c9601..0b4bf6e43464 100644
--- a/drivers/rtc/rtc-rzn1.c
+++ b/drivers/rtc/rtc-rzn1.c
@@ -272,7 +272,7 @@ static int rzn1_rtc_set_offset(struct device *dev, long offset)
 	struct rzn1_rtc *rtc = dev_get_drvdata(dev);
 	unsigned int steps;
 	int stepsh, stepsl;
-	u32 val;
+	u32 val = 0;
 	int ret;
 
 	/*
-- 
2.35.1