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From:   davidcomponentone@gmail.com
To:     gregkh@linuxfoundation.org
Cc:     davidcomponentone@gmail.com, jirislaby@kernel.org, joel@jms.id.au,
        andrew@aj.id.au, zev@bewilderbeest.net, johan@kernel.org,
        yang.guang5@zte.com.cn, linux-serial@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH v2] serial: 8259_aspeed_vuart: replace snprintf with sysfs_emit
Date:   Thu, 10 Feb 2022 18:34:45 +0800
Message-Id: <a0f3e5d6d438710413d1909365f99ae4d2a4bacc.1644399683.git.yang.guang5@zte.com.cn>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Yang Guang <yang.guang5@zte.com.cn>

coccinelle report:
./drivers/tty/serial/8250/8250_aspeed_vuart.c:85:8-16:
WARNING: use scnprintf or sprintf
./drivers/tty/serial/8250/8250_aspeed_vuart.c:174:8-16:
WARNING: use scnprintf or sprintf
./drivers/tty/serial/8250/8250_aspeed_vuart.c:127:8-16:
WARNING: use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
CC: David Yang <davidcomponentone@gmail.com>

---
Change from v1-v2:
- Modify the patch title
- Use the CC for patch sender

---
 drivers/tty/serial/8250/8250_aspeed_vuart.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c
index 2350fb3bb5e4..36c39b8ea7af 100644
--- a/drivers/tty/serial/8250/8250_aspeed_vuart.c
+++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c
@@ -82,7 +82,7 @@ static ssize_t lpc_address_show(struct device *dev,
 	addr = (aspeed_vuart_readb(vuart, ASPEED_VUART_ADDRH) << 8) |
 		(aspeed_vuart_readb(vuart, ASPEED_VUART_ADDRL));
 
-	return snprintf(buf, PAGE_SIZE - 1, "0x%x\n", addr);
+	return sysfs_emit(buf, "0x%x\n", addr);
 }
 
 static int aspeed_vuart_set_lpc_address(struct aspeed_vuart *vuart, u32 addr)
@@ -124,7 +124,7 @@ static ssize_t sirq_show(struct device *dev,
 	reg &= ASPEED_VUART_GCRB_HOST_SIRQ_MASK;
 	reg >>= ASPEED_VUART_GCRB_HOST_SIRQ_SHIFT;
 
-	return snprintf(buf, PAGE_SIZE - 1, "%u\n", reg);
+	return sysfs_emit(buf, "%u\n", reg);
 }
 
 static int aspeed_vuart_set_sirq(struct aspeed_vuart *vuart, u32 sirq)
@@ -171,7 +171,7 @@ static ssize_t sirq_polarity_show(struct device *dev,
 	reg = aspeed_vuart_readb(vuart, ASPEED_VUART_GCRA);
 	reg &= ASPEED_VUART_GCRA_HOST_SIRQ_POLARITY;
 
-	return snprintf(buf, PAGE_SIZE - 1, "%u\n", reg ? 1 : 0);
+	return sysfs_emit(buf, "%u\n", reg ? 1 : 0);
 }
 
 static void aspeed_vuart_set_sirq_polarity(struct aspeed_vuart *vuart,
-- 
2.30.2