Hi All,
         I am trying to make stack for my learning in which i made a bus driver and device driver when i am trying to create device sysfs file after registering it with the bus i am getting oops after some digging i found that the compiler is reporting warning for using preprocessor macro called DEV_ATT. code is as follows. can anybody help me to remove this warning.
 
static ssize_t show_host_device_version(struct device *ddev, char *buf)
{
    struct HOST *dev = ddev->driver_data;

    return print_dev_t(buf, dev->cdev.dev);
}

static DEVICE_ATTR(host_device_version,S_IRUGO,show_host_device_version,NULL);
 
device_create_file(&dev->host.dev, &dev_attr_host_device_version);
 
 
Regards

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