s390/qeth: convert sysfs snprintf to sysfs_emit

Follow the advice of the Documentation/filesystems/sysfs.rst
and show() should only use sysfs_emit() or sysfs_emit_at()
when formatting the value to be returned to user space.

Signed-off-by: Xuezhi Zhang <zhangxuezhi1@coolpad.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c
index 406be16..d1adc4b 100644 (file)
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -410,13 +410,13 @@ static ssize_t qeth_dev_isolation_show(struct device *dev,
 
        switch (card->options.isolation) {
        case ISOLATION_MODE_NONE:
-               return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_NONE);
+               return sysfs_emit(buf, "%s\n", ATTR_QETH_ISOLATION_NONE);
        case ISOLATION_MODE_FWD:
-               return snprintf(buf, 9, "%s\n", ATTR_QETH_ISOLATION_FWD);
+               return sysfs_emit(buf, "%s\n", ATTR_QETH_ISOLATION_FWD);
        case ISOLATION_MODE_DROP:
-               return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_DROP);
+               return sysfs_emit(buf, "%s\n", ATTR_QETH_ISOLATION_DROP);
        default:
-               return snprintf(buf, 5, "%s\n", "N/A");
+               return sysfs_emit(buf, "%s\n", "N/A");
        }
 }
 
@@ -500,9 +500,9 @@ static ssize_t qeth_hw_trap_show(struct device *dev,
        struct qeth_card *card = dev_get_drvdata(dev);
 
        if (card->info.hwtrap)
-               return snprintf(buf, 5, "arm\n");
+               return sysfs_emit(buf, "arm\n");
        else
-               return snprintf(buf, 8, "disarm\n");
+               return sysfs_emit(buf, "disarm\n");
 }
 
 static ssize_t qeth_hw_trap_store(struct device *dev,