ata: replace snprintf in show functions with sysfs_emit

coccinelle report：
./drivers/ata/libata-sata.c:830:8-16:
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>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 5b78e86..b9c7788 100644 (file)
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -827,7 +827,7 @@ static ssize_t ata_scsi_lpm_show(struct device *dev,
        if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names))
                return -EINVAL;
 
-       return snprintf(buf, PAGE_SIZE, "%s\n",
+       return sysfs_emit(buf, "%s\n",
                        ata_lpm_policy_names[ap->target_lpm_policy]);
 }
 DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,