_dev_warn        3382 drivers/base/core.c define_dev_printk_level(_dev_warn, KERN_WARNING);
_dev_warn        1681 include/linux/device.h void _dev_warn(const struct device *dev, const char *fmt, ...);
_dev_warn        1718 include/linux/device.h void _dev_warn(const struct device *dev, const char *fmt, ...)
_dev_warn        1743 include/linux/device.h 	_dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__)