sysfs_emit() is preferred over sprintf() when formatting the value to be
returned to user space in show() functions, because it knows about sysfs
buffer specifics and has sanity checks.
Signed-off-by: Nguyen Dinh Phi <[email protected]>
---
V2:
- Fix title
- Change commit message
samples/kobject/kobject-example.c | 4 ++--
samples/kobject/kset-example.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/samples/kobject/kobject-example.c b/samples/kobject/kobject-example.c
index 9e383fdbaa00..96678ed73216 100644
--- a/samples/kobject/kobject-example.c
+++ b/samples/kobject/kobject-example.c
@@ -28,7 +28,7 @@ static int bar;
static ssize_t foo_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", foo);
+ return sysfs_emit(buf, "%d\n", foo);
}
static ssize_t foo_store(struct kobject *kobj, struct kobj_attribute *attr,
@@ -60,7 +60,7 @@ static ssize_t b_show(struct kobject *kobj, struct kobj_attribute *attr,
var = baz;
else
var = bar;
- return sprintf(buf, "%d\n", var);
+ return sysfs_emit(buf, "%d\n", var);
}
static ssize_t b_store(struct kobject *kobj, struct kobj_attribute *attr,
diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c
index c8010f126808..52f1acabd479 100644
--- a/samples/kobject/kset-example.c
+++ b/samples/kobject/kset-example.c
@@ -112,7 +112,7 @@ static void foo_release(struct kobject *kobj)
static ssize_t foo_show(struct foo_obj *foo_obj, struct foo_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", foo_obj->foo);
+ return sysfs_emit(buf, "%d\n", foo_obj->foo);
}
static ssize_t foo_store(struct foo_obj *foo_obj, struct foo_attribute *attr,
@@ -144,7 +144,7 @@ static ssize_t b_show(struct foo_obj *foo_obj, struct foo_attribute *attr,
var = foo_obj->baz;
else
var = foo_obj->bar;
- return sprintf(buf, "%d\n", var);
+ return sysfs_emit(buf, "%d\n", var);
}
static ssize_t b_store(struct foo_obj *foo_obj, struct foo_attribute *attr,
--
2.25.1