linux-kernel - [PATCH v2 09/22] watchdog: ziirave_wdt: Fix incorrect use of ARRAY

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Message-Id: <20190812200906.31344-10-andrew.smirnov@gmail.com>
Date:   Mon, 12 Aug 2019 13:08:53 -0700
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-watchdog@...r.kernel.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Chris Healy <cphealy@...il.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Rick Ramstetter <rick@...eaterllc.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 09/22] watchdog: ziirave_wdt: Fix incorrect use of ARRAY_SIZE

Both memset() and ziirave_firm_write_block_data() expect length in
bytes as an argument, not a number of elements in array. It just
happens that in this particular case both values are equal. Modify the
code to use sizeof() instead.

Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Cc: Chris Healy <cphealy@...il.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Cc: Rick Ramstetter <rick@...eaterllc.com>
Cc: linux-watchdog@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/watchdog/ziirave_wdt.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/watchdog/ziirave_wdt.c b/drivers/watchdog/ziirave_wdt.c
index 19da0910c2d1..e0f55cbdc603 100644
--- a/drivers/watchdog/ziirave_wdt.c
+++ b/drivers/watchdog/ziirave_wdt.c
@@ -203,7 +203,7 @@ static int ziirave_firm_set_read_addr(struct watchdog_device *wdd, u16 addr)
 
 	return i2c_smbus_write_block_data(client,
 					  ZIIRAVE_CMD_DOWNLOAD_SET_READ_ADDR,
-					  ARRAY_SIZE(address), address);
+					  sizeof(address), address);
 }
 
 static int ziirave_firm_write_block_data(struct watchdog_device *wdd,
@@ -260,7 +260,7 @@ static int __ziirave_firm_write_pkt(struct watchdog_device *wdd,
 		return -EMSGSIZE;
 	}
 
-	memset(packet, 0, ARRAY_SIZE(packet));
+	memset(packet, 0, sizeof(packet));
 
 	/* Packet length */
 	packet[0] = len;
@@ -276,7 +276,7 @@ static int __ziirave_firm_write_pkt(struct watchdog_device *wdd,
 	packet[ZIIRAVE_FIRM_PKT_TOTAL_SIZE - 1] = checksum;
 
 	ret = ziirave_firm_write_block_data(wdd, ZIIRAVE_CMD_DOWNLOAD_PACKET,
-					    ARRAY_SIZE(packet), packet, true);
+					    sizeof(packet), packet, true);
 	if (ret)
 		dev_err(&client->dev,
 		      "Failed to write firmware packet at address 0x%04x: %d\n",
-- 
2.21.0