mfd: janz-cmoio: Replace snprintf in show functions with sysfs_emit

show() must not use snprintf() when formatting the value to be
returned to user space.

Fix the following coccicheck warning:
drivers/mfd/janz-cmodio.c:157: WARNING: use scnprintf or sprintf.

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Signed-off-by: Qing Wang <wangqing@vivo.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/1634280592-4722-1-git-send-email-wangqing@vivo.com

diff --git a/drivers/mfd/janz-cmodio.c b/drivers/mfd/janz-cmodio.c
index 70eba4c..add3bc0 100644 (file)
--- a/drivers/mfd/janz-cmodio.c
+++ b/drivers/mfd/janz-cmodio.c
@@ -154,7 +154,7 @@ static ssize_t modulbus_number_show(struct device *dev,
 {
        struct cmodio_device *priv = dev_get_drvdata(dev);
 
-       return snprintf(buf, PAGE_SIZE, "%x\n", priv->hex);
+       return sysfs_emit(buf, "%x\n", priv->hex);
 }
 
 static DEVICE_ATTR_RO(modulbus_number);