linux-kernel - [PATCH 3/3] bus: mhi: replace snprintf in show functions with sysfs

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Date:   Sat, 16 Oct 2021 12:27:34 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     hemantk@...eaurora.org, bbhatt@...eaurora.org,
        loic.poulain@...aro.org, wangqing@...o.com, mhi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Manivannan Sadhasivam <mani@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 3/3] bus: mhi: replace snprintf in show functions with sysfs_emit

From: Qing Wang <wangqing@...o.com>

coccicheck complains about the use of snprintf() in sysfs show functions.

Fix the following coccicheck warning:
drivers/bus/mhi/core/init.c:97:8-16: WARNING: use scnprintf or sprintf.

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Signed-off-by: Qing Wang <wangqing@...o.com>
Reviewed-by: Hemant Kumar <hemantk@...eaurora.org>
Reviewed-by: Manivannan Sadhasivam <mani@...nel.org>
Link: https://lore.kernel.org/r/1634095550-3978-1-git-send-email-wangqing@vivo.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/bus/mhi/core/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index 5aaca6d0f52b..a5a5c722731e 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -94,7 +94,7 @@ static ssize_t serial_number_show(struct device *dev,
 	struct mhi_device *mhi_dev = to_mhi_device(dev);
 	struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;
 
-	return snprintf(buf, PAGE_SIZE, "Serial Number: %u\n",
+	return sysfs_emit(buf, "Serial Number: %u\n",
 			mhi_cntrl->serial_number);
 }
 static DEVICE_ATTR_RO(serial_number);
-- 
2.25.1