s390/cio: use kobj_to_dev() API

Use kobj_to_dev() API instead of container_of().

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
Signed-off-by: chenqiwu <qiwuchen55@gmail.com>
Message-Id: <1581688293-17283-1-git-send-email-qiwuchen55@gmail.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 51038ec..dfcbe54 100644 (file)
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -135,7 +135,7 @@ static ssize_t chp_measurement_chars_read(struct file *filp,
        struct channel_path *chp;
        struct device *device;
 
-       device = container_of(kobj, struct device, kobj);
+       device = kobj_to_dev(kobj);
        chp = to_channelpath(device);
        if (chp->cmg == -1)
                return 0;
@@ -184,7 +184,7 @@ static ssize_t chp_measurement_read(struct file *filp, struct kobject *kobj,
        struct device *device;
        unsigned int size;
 
-       device = container_of(kobj, struct device, kobj);
+       device = kobj_to_dev(kobj);
        chp = to_channelpath(device);
        css = to_css(chp->dev.parent);